diff options
Diffstat (limited to 'plugins/signal-protocol')
18 files changed, 2935 insertions, 0 deletions
diff --git a/plugins/signal-protocol/CMakeLists.txt b/plugins/signal-protocol/CMakeLists.txt new file mode 100644 index 00000000..de95adc6 --- /dev/null +++ b/plugins/signal-protocol/CMakeLists.txt @@ -0,0 +1,138 @@ +add_subdirectory(libsignal-protocol-c) +set_property(TARGET curve25519 PROPERTY POSITION_INDEPENDENT_CODE ON) +set_property(TARGET protobuf-c PROPERTY POSITION_INDEPENDENT_CODE ON) +set_property(TARGET signal-protocol-c PROPERTY POSITION_INDEPENDENT_CODE ON) + +find_package(Vala REQUIRED) +find_package(PkgConfig REQUIRED) +find_package(OpenSSL REQUIRED) +include(${VALA_USE_FILE}) + +set(SIGNAL_PROTOCOL_PACKAGES + glib-2.0 + gee-0.8 + gobject-2.0 +) + +pkg_check_modules(SIGNAL_PROTOCOL REQUIRED ${SIGNAL_PROTOCOL_PACKAGES}) + +vala_precompile(SIGNAL_PROTOCOL_VALA_C +SOURCES + "src/context.vala" + "src/simple_iks.vala" + "src/simple_ss.vala" + "src/simple_pks.vala" + "src/simple_spks.vala" + "src/store.vala" + "src/util.vala" +CUSTOM_VAPIS + ${CMAKE_CURRENT_SOURCE_DIR}/vapi/signal-protocol-public.vapi + ${CMAKE_CURRENT_SOURCE_DIR}/vapi/signal-protocol-native.vapi +PACKAGES + ${SIGNAL_PROTOCOL_PACKAGES} +GENERATE_VAPI + signal-protocol-vala +GENERATE_HEADER + signal-protocol-vala +OPTIONS + ${GLOBAL_DEBUG_FLAGS} + --thread +) + +set(CFLAGS ${VALA_CFLAGS} ${SIGNAL_PROTOCOL_CFLAGS} -I${CMAKE_CURRENT_SOURCE_DIR}/libsignal-protocol-c/src -I${CMAKE_CURRENT_SOURCE_DIR}/src) +add_definitions(${CFLAGS}) +add_library(signal-protocol-vala ${SIGNAL_PROTOCOL_VALA_C} ${CMAKE_CURRENT_SOURCE_DIR}/src/signal_helper.c) +add_dependencies(signal-protocol-vala signal-protocol-c) +target_link_libraries(signal-protocol-vala ${SIGNAL_PROTOCOL_LIBRARIES} ${OPENSSL_CRYPTO_LIBRARY} signal-protocol-c -lm) +set_property(TARGET signal-protocol-vala PROPERTY POSITION_INDEPENDENT_CODE ON) + +set(SIGNAL_PROTOCOL_C_HEADERS + signal_protocol.h + signal_protocol_types.h + curve.h + hkdf.h + ratchet.h + protocol.h + session_state.h + session_record.h + session_pre_key.h + session_builder.h + session_cipher.h + key_helper.h + sender_key.h + sender_key_state.h + sender_key_record.h + group_session_builder.h + group_cipher.h + fingerprint.h + device_consistency.h +) + +set(C_HEADERS_SRC "") +set(C_HEADERS_TARGET "") + +foreach(f ${SIGNAL_PROTOCOL_C_HEADERS}) + list(APPEND C_HEADERS_SRC "${CMAKE_CURRENT_SOURCE_DIR}/libsignal-protocol-c/src/${f}") + list(APPEND C_HEADERS_TARGET "${CMAKE_BINARY_DIR}/exports/${f}") + add_custom_command(OUTPUT "${CMAKE_BINARY_DIR}/exports/${f}" + COMMAND + cp "${CMAKE_CURRENT_SOURCE_DIR}/libsignal-protocol-c/src/${f}" "${CMAKE_BINARY_DIR}/exports/${f}" + DEPENDS + "${CMAKE_CURRENT_SOURCE_DIR}/libsignal-protocol-c/src/${f}" + COMMENT + Copy header file ${f} + ) +endforeach(f) + +list(APPEND C_HEADERS_SRC "${CMAKE_CURRENT_SOURCE_DIR}/src/signal_helper.h") +list(APPEND C_HEADERS_TARGET "${CMAKE_BINARY_DIR}/exports/signal_helper.h") + +add_custom_command(OUTPUT "${CMAKE_BINARY_DIR}/exports/signal_helper.h" +COMMAND + cp "${CMAKE_CURRENT_SOURCE_DIR}/src/signal_helper.h" "${CMAKE_BINARY_DIR}/exports/signal_helper.h" +DEPENDS + "${CMAKE_CURRENT_SOURCE_DIR}/src/signal_helper.h" +COMMENT + Copy header file signal_helper.h +) + +add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/exports/signal-protocol.vapi +COMMAND + cat "${CMAKE_CURRENT_SOURCE_DIR}/vapi/signal-protocol-public.vapi" "${CMAKE_BINARY_DIR}/exports/signal-protocol-vala.vapi" > "${CMAKE_BINARY_DIR}/exports/signal-protocol.vapi" +DEPENDS + ${CMAKE_CURRENT_SOURCE_DIR}/vapi/signal-protocol-public.vapi + ${CMAKE_BINARY_DIR}/exports/signal-protocol-vala.vapi +) + +add_custom_target(signal-protocol-vapi +DEPENDS + ${CMAKE_BINARY_DIR}/exports/signal-protocol.vapi + ${CMAKE_BINARY_DIR}/exports/signal-protocol-vala.h + ${C_HEADERS_TARGET} +) + +if(BUILD_TESTING) + vala_precompile(SIGNAL_TEST_VALA_C + SOURCES + "tests/common.vala" + "tests/testcase.vala" + + "tests/curve25519.vala" + "tests/hkdf.vala" + "tests/session_builder.vala" + CUSTOM_VAPIS + ${CMAKE_BINARY_DIR}/exports/signal-protocol-vala-internal.vapi + ${CMAKE_CURRENT_SOURCE_DIR}/vapi/signal-protocol-public.vapi + ${CMAKE_CURRENT_SOURCE_DIR}/vapi/signal-protocol-native.vapi + PACKAGES + ${SIGNAL_PROTOCOL_PACKAGES} + OPTIONS + ${GLOBAL_DEBUG_FLAGS} + --thread + ) + + set(CFLAGS ${VALA_CFLAGS} ${SIGNAL_PROTOCOL_CFLAGS} -I${CMAKE_CURRENT_BINARY_DIR}/signal-protocol) + add_executable(signal-protocol-vala-test ${SIGNAL_TEST_VALA_C}) + add_dependencies(signal-protocol-vala-test signal-protocol-vala signal-protocol-vapi) + target_link_libraries(signal-protocol-vala-test signal-protocol-vala) +endif(BUILD_TESTING)
\ No newline at end of file diff --git a/plugins/signal-protocol/libsignal-protocol-c b/plugins/signal-protocol/libsignal-protocol-c new file mode 160000 +Subproject 7d4b305691c59a12a3ff5b54a34d6f095f9b791 diff --git a/plugins/signal-protocol/src/context.vala b/plugins/signal-protocol/src/context.vala new file mode 100644 index 00000000..38ac3662 --- /dev/null +++ b/plugins/signal-protocol/src/context.vala @@ -0,0 +1,101 @@ +namespace Signal { + +public class Context { + internal NativeContext native_context; + private RecMutex mutex = RecMutex(); + + static void locking_function_lock(void* user_data) { + Context ctx = (Context) user_data; + ctx.mutex.lock(); + } + + static void locking_function_unlock(void* user_data) { + Context ctx = (Context) user_data; + ctx.mutex.unlock(); + } + + static void stderr_log(LogLevel level, string message, void* user_data) { + printerr(@"$level: $message\n"); + } + + public Context(bool log = false) throws Error { + throw_by_code(NativeContext.create(out native_context, this), "Error initializing native context"); + throw_by_code(native_context.set_locking_functions(locking_function_lock, locking_function_unlock), "Error initializing native locking functions"); + if (log) native_context.set_log_function(stderr_log); + setup_crypto_provider(native_context); + } + + public Store create_store() { + return new Store(this); + } + + public void randomize(uint8[] data) throws Error { + throw_by_code(Signal.native_random(native_context, data)); + } + + public SignedPreKeyRecord generate_signed_pre_key(IdentityKeyPair identity_key_pair, int32 id, uint64 timestamp = 0) throws Error { + if (timestamp == 0) timestamp = new DateTime.now_local().to_unix(); + SignedPreKeyRecord res; + throw_by_code(Protocol.KeyHelper.generate_signed_pre_key(out res, identity_key_pair, id, timestamp, native_context)); + return res; + } + + public Gee.Set<PreKeyRecord> generate_pre_keys(uint start, uint count) throws Error { + Gee.Set<PreKeyRecord> res = new Gee.HashSet<PreKeyRecord>(); + for(uint i = start; i < start+count; i++) { + ECKeyPair pair = generate_key_pair(); + res.add(new PreKeyRecord(i, pair)); + } + return res; + } + + public ECPublicKey decode_public_key(uint8[] bytes) throws Error { + ECPublicKey public_key; + throw_by_code(curve_decode_point(out public_key, bytes, native_context), "Error decoding public key"); + return public_key; + } + + public ECPrivateKey decode_private_key(uint8[] bytes) throws Error { + ECPrivateKey private_key; + throw_by_code(curve_decode_private_point(out private_key, bytes, native_context), "Error decoding private key"); + return private_key; + } + + public ECKeyPair generate_key_pair() throws Error { + ECKeyPair key_pair; + throw_by_code(curve_generate_key_pair(native_context, out key_pair), "Error generating key pair"); + return key_pair; + } + + public uint8[] calculate_signature(ECPrivateKey signing_key, uint8[] message) throws Error { + Buffer signature; + throw_by_code(Curve.calculate_signature(native_context, out signature, signing_key, message), "Error calculating signature"); + return signature.data; + } + + public SignalMessage deserialize_signal_message(uint8[] data) throws Error { + SignalMessage res; + throw_by_code(signal_message_deserialize(out res, data, native_context)); + return res; + } + + public SignalMessage copy_signal_message(CiphertextMessage original) throws Error { + SignalMessage res; + throw_by_code(signal_message_copy(out res, (SignalMessage) original, native_context)); + return res; + } + + public PreKeySignalMessage deserialize_pre_key_signal_message(uint8[] data) throws Error { + PreKeySignalMessage res; + throw_by_code(pre_key_signal_message_deserialize(out res, data, native_context)); + return res; + } + + public PreKeySignalMessage copy_pre_key_signal_message(CiphertextMessage original) throws Error { + PreKeySignalMessage res; + throw_by_code(pre_key_signal_message_copy(out res, (PreKeySignalMessage) original, native_context)); + return res; + } +} + +}
\ No newline at end of file diff --git a/plugins/signal-protocol/src/signal_helper.c b/plugins/signal-protocol/src/signal_helper.c new file mode 100644 index 00000000..2df2a627 --- /dev/null +++ b/plugins/signal-protocol/src/signal_helper.c @@ -0,0 +1,506 @@ +#include <signal_helper.h> +#include <signal_protocol_internal.h> + +#include <openssl/evp.h> +#include <openssl/hmac.h> +#include <openssl/rand.h> +#include <openssl/sha.h> +#include <openssl/err.h> + +signal_type_base* signal_type_ref_vapi(signal_type_base* instance) { + if (instance->ref_count > 100 || instance->ref_count < 1) + printf("REF %x -> %d\n", instance, instance->ref_count+1); + signal_type_ref(instance); + return instance; +} + +signal_type_base* signal_type_unref_vapi(signal_type_base* instance) { + if (instance->ref_count > 100 || instance->ref_count < 0) + printf("UNREF %x -> %d\n", instance, instance->ref_count-1); + signal_type_unref(instance); + return 0; +} + +signal_protocol_address* signal_protocol_address_new() { + signal_protocol_address* address = malloc(sizeof(signal_protocol_address)); + address->name = 0; + address->device_id = 0; + return address; +} + +void signal_protocol_address_free(signal_protocol_address* ptr) { + if (ptr->name) { + g_free((void*)ptr->name); + } + return free(ptr); +} + +void signal_protocol_address_set_name(signal_protocol_address* self, const gchar* name) { + gchar* n = g_malloc(strlen(name)+1); + memcpy(n, name, strlen(name)); + n[strlen(name)] = 0; + if (self->name) { + g_free((void*)self->name); + } + self->name = n; + self->name_len = strlen(n); +} + +gchar* signal_protocol_address_get_name(signal_protocol_address* self) { + if (self->name == 0) return 0; + gchar* res = g_malloc(sizeof(char) * (self->name_len + 1)); + memcpy(res, self->name, self->name_len); + res[self->name_len] = 0; + return res; +} + +session_pre_key* session_pre_key_new(uint32_t pre_key_id, ec_key_pair* pair, int* err) { + session_pre_key* res; + *err = session_pre_key_create(&res, pre_key_id, pair); + return res; +} + +session_signed_pre_key* session_signed_pre_key_new(uint32_t id, uint64_t timestamp, ec_key_pair* pair, uint8_t* key, int key_len, int* err) { + session_signed_pre_key* res; + *err = session_signed_pre_key_create(&res, id, timestamp, pair, key, key_len); + return res; +} + + + +int signal_vala_random_generator(uint8_t *data, size_t len, void *user_data) +{ + if(RAND_bytes(data, len)) { + return 0; + } + else { + return SG_ERR_UNKNOWN; + } +} + +int signal_vala_hmac_sha256_init(void **hmac_context, const uint8_t *key, size_t key_len, void *user_data) +{ + HMAC_CTX *ctx = malloc(sizeof(HMAC_CTX)); + if(!ctx) { + return SG_ERR_NOMEM; + } + HMAC_CTX_init(ctx); + *hmac_context = ctx; + + if(HMAC_Init_ex(ctx, key, key_len, EVP_sha256(), 0) != 1) { + return SG_ERR_UNKNOWN; + } + + return 0; +} + +int signal_vala_hmac_sha256_update(void *hmac_context, const uint8_t *data, size_t data_len, void *user_data) +{ + HMAC_CTX *ctx = hmac_context; + int result = HMAC_Update(ctx, data, data_len); + + return (result == 1) ? 0 : -1; +} + +int signal_vala_hmac_sha256_final(void *hmac_context, signal_buffer **output, void *user_data) +{ + int result = 0; + unsigned char md[EVP_MAX_MD_SIZE]; + unsigned int len = 0; + HMAC_CTX *ctx = hmac_context; + + if(HMAC_Final(ctx, md, &len) != 1) { + return SG_ERR_UNKNOWN; + } + + signal_buffer *output_buffer = signal_buffer_create(md, len); + if(!output_buffer) { + result = SG_ERR_NOMEM; + goto complete; + } + + *output = output_buffer; + +complete: + return result; +} + +void signal_vala_hmac_sha256_cleanup(void *hmac_context, void *user_data) +{ + if(hmac_context) { + HMAC_CTX *ctx = hmac_context; + HMAC_CTX_cleanup(ctx); + free(ctx); + } +} + +const EVP_CIPHER *aes_cipher(int cipher, size_t key_len) +{ + if(cipher == SG_CIPHER_AES_CBC_PKCS5) { + if(key_len == 16) { + return EVP_aes_128_cbc(); + } + else if(key_len == 24) { + return EVP_aes_192_cbc(); + } + else if(key_len == 32) { + return EVP_aes_256_cbc(); + } + } + else if(cipher == SG_CIPHER_AES_CTR_NOPADDING) { + if(key_len == 16) { + return EVP_aes_128_ctr(); + } + else if(key_len == 24) { + return EVP_aes_192_ctr(); + } + else if(key_len == 32) { + return EVP_aes_256_ctr(); + } + } + else if (cipher == SG_CIPHER_AES_GCM_NOPADDING) { + if(key_len == 16) { + return EVP_aes_128_gcm(); + } + else if(key_len == 24) { + return EVP_aes_192_gcm(); + } + else if(key_len == 32) { + return EVP_aes_256_gcm(); + } + } + return 0; +} + +int signal_vala_sha512_digest_init(void **digest_context, void *user_data) +{ + int result = 0; + EVP_MD_CTX *ctx; + + ctx = EVP_MD_CTX_create(); + if(!ctx) { + result = SG_ERR_NOMEM; + goto complete; + } + + result = EVP_DigestInit_ex(ctx, EVP_sha512(), 0); + if(result == 1) { + result = SG_SUCCESS; + } + else { + result = SG_ERR_UNKNOWN; + } + +complete: + if(result < 0) { + if(ctx) { + EVP_MD_CTX_destroy(ctx); + } + } + else { + *digest_context = ctx; + } + return result; +} + +int signal_vala_sha512_digest_update(void *digest_context, const uint8_t *data, size_t data_len, void *user_data) +{ + EVP_MD_CTX *ctx = digest_context; + + int result = EVP_DigestUpdate(ctx, data, data_len); + + return (result == 1) ? SG_SUCCESS : SG_ERR_UNKNOWN; +} + +int signal_vala_sha512_digest_final(void *digest_context, signal_buffer **output, void *user_data) +{ + int result = 0; + unsigned char md[EVP_MAX_MD_SIZE]; + unsigned int len = 0; + EVP_MD_CTX *ctx = digest_context; + + result = EVP_DigestFinal_ex(ctx, md, &len); + if(result == 1) { + result = SG_SUCCESS; + } + else { + result = SG_ERR_UNKNOWN; + goto complete; + } + + result = EVP_DigestInit_ex(ctx, EVP_sha512(), 0); + if(result == 1) { + result = SG_SUCCESS; + } + else { + result = SG_ERR_UNKNOWN; + goto complete; + } + + signal_buffer *output_buffer = signal_buffer_create(md, len); + if(!output_buffer) { + result = SG_ERR_NOMEM; + goto complete; + } + + *output = output_buffer; + +complete: + return result; +} + +void signal_vala_sha512_digest_cleanup(void *digest_context, void *user_data) +{ + EVP_MD_CTX *ctx = digest_context; + EVP_MD_CTX_destroy(ctx); +} + +int signal_vala_encrypt(signal_buffer **output, + int cipher, + const uint8_t *key, size_t key_len, + const uint8_t *iv, size_t iv_len, + const uint8_t *plaintext, size_t plaintext_len, + void *user_data) +{ + int result = 0; + uint8_t *out_buf = 0; + + const EVP_CIPHER *evp_cipher = aes_cipher(cipher, key_len); + if(!evp_cipher) { + fprintf(stderr, "invalid AES mode or key size: %zu\n", key_len); + return SG_ERR_UNKNOWN; + } + + if(iv_len != 16) { + fprintf(stderr, "invalid AES IV size: %zu\n", iv_len); + return SG_ERR_UNKNOWN; + } + + if(plaintext_len > INT_MAX - EVP_CIPHER_block_size(evp_cipher)) { + fprintf(stderr, "invalid plaintext length: %zu\n", plaintext_len); + return SG_ERR_UNKNOWN; + } + + EVP_CIPHER_CTX ctx; + EVP_CIPHER_CTX_init(&ctx); + + int buf_extra = 0; + + if(cipher == SG_CIPHER_AES_GCM_NOPADDING) { + // In GCM mode we use the last 16 bytes as auth tag + buf_extra += 16; + + result = EVP_EncryptInit_ex(&ctx, evp_cipher, NULL, NULL, NULL); + if(!result) { + fprintf(stderr, "cannot initialize cipher\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + + result = EVP_CIPHER_CTX_ctrl(&ctx, EVP_CTRL_GCM_SET_IVLEN, 16, NULL); + if(!result) { + fprintf(stderr, "cannot set iv size\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + + result = EVP_EncryptInit_ex(&ctx, NULL, NULL, key, iv); + if(!result) { + fprintf(stderr, "cannot set key/iv\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + } else { + result = EVP_EncryptInit_ex(&ctx, evp_cipher, 0, key, iv); + if(!result) { + fprintf(stderr, "cannot initialize cipher\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + } + + if(cipher == SG_CIPHER_AES_CTR_NOPADDING || cipher == SG_CIPHER_AES_GCM_NOPADDING) { + result = EVP_CIPHER_CTX_set_padding(&ctx, 0); + if(!result) { + fprintf(stderr, "cannot set padding\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + } + + out_buf = malloc(sizeof(uint8_t) * (plaintext_len + EVP_CIPHER_block_size(evp_cipher) + buf_extra)); + if(!out_buf) { + fprintf(stderr, "cannot allocate output buffer\n"); + result = SG_ERR_NOMEM; + goto complete; + } + + int out_len = 0; + result = EVP_EncryptUpdate(&ctx, + out_buf, &out_len, plaintext, plaintext_len); + if(!result) { + fprintf(stderr, "cannot encrypt plaintext\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + + int final_len = 0; + result = EVP_EncryptFinal_ex(&ctx, out_buf + out_len, &final_len); + if(!result) { + fprintf(stderr, "cannot finish encrypting plaintext\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + + if(cipher == SG_CIPHER_AES_GCM_NOPADDING) { + result = EVP_CIPHER_CTX_ctrl(&ctx, EVP_CTRL_GCM_GET_TAG, 16, out_buf + (out_len + final_len)); + if(!result) { + fprintf(stderr, "cannot get tag\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + } + + *output = signal_buffer_create(out_buf, out_len + final_len + buf_extra); + +complete: + EVP_CIPHER_CTX_cleanup(&ctx); + if(out_buf) { + free(out_buf); + } + return result; +} + +int signal_vala_decrypt(signal_buffer **output, + int cipher, + const uint8_t *key, size_t key_len, + const uint8_t *iv, size_t iv_len, + const uint8_t *ciphertext, size_t ciphertext_len, + void *user_data) +{ + int result = 0; + uint8_t *out_buf = 0; + + const EVP_CIPHER *evp_cipher = aes_cipher(cipher, key_len); + if(!evp_cipher) { + fprintf(stderr, "invalid AES mode or key size: %zu\n", key_len); + return SG_ERR_INVAL; + } + + if(iv_len != 16) { + fprintf(stderr, "invalid AES IV size: %zu\n", iv_len); + return SG_ERR_INVAL; + } + + if(ciphertext_len > INT_MAX - EVP_CIPHER_block_size(evp_cipher)) { + fprintf(stderr, "invalid ciphertext length: %zu\n", ciphertext_len); + return SG_ERR_UNKNOWN; + } + + EVP_CIPHER_CTX ctx; + EVP_CIPHER_CTX_init(&ctx); + + if(cipher == SG_CIPHER_AES_GCM_NOPADDING) { + // In GCM mode we use the last 16 bytes as auth tag + ciphertext_len -= 16; + + result = EVP_DecryptInit_ex(&ctx, evp_cipher, NULL, NULL, NULL); + if(!result) { + fprintf(stderr, "cannot initialize cipher\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + + result = EVP_CIPHER_CTX_ctrl(&ctx, EVP_CTRL_GCM_SET_IVLEN, 16, NULL); + if(!result) { + fprintf(stderr, "cannot set iv size\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + + result = EVP_DecryptInit_ex(&ctx, NULL, NULL, key, iv); + if(!result) { + fprintf(stderr, "cannot set key/iv\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + } else { + result = EVP_DecryptInit_ex(&ctx, evp_cipher, 0, key, iv); + if(!result) { + fprintf(stderr, "cannot initialize cipher\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + } + + if(cipher == SG_CIPHER_AES_CTR_NOPADDING || cipher == SG_CIPHER_AES_GCM_NOPADDING) { + result = EVP_CIPHER_CTX_set_padding(&ctx, 0); + if(!result) { + fprintf(stderr, "cannot set padding\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + } + + out_buf = malloc(sizeof(uint8_t) * (ciphertext_len + EVP_CIPHER_block_size(evp_cipher))); + if(!out_buf) { + fprintf(stderr, "cannot allocate output buffer\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + + int out_len = 0; + result = EVP_DecryptUpdate(&ctx, + out_buf, &out_len, ciphertext, ciphertext_len); + if(!result) { + fprintf(stderr, "cannot decrypt ciphertext\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + + if(cipher == SG_CIPHER_AES_GCM_NOPADDING) { + result = EVP_CIPHER_CTX_ctrl(&ctx, EVP_CTRL_GCM_SET_TAG, 16, (uint8_t*)ciphertext + ciphertext_len); + if(!result) { + fprintf(stderr, "cannot set tag\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + } + + int final_len = 0; + result = EVP_DecryptFinal_ex(&ctx, out_buf + out_len, &final_len); + if(!result) { + fprintf(stderr, "cannot finish decrypting ciphertexts\n"); + result = SG_ERR_UNKNOWN; + goto complete; + } + + *output = signal_buffer_create(out_buf, out_len + final_len); + +complete: + EVP_CIPHER_CTX_cleanup(&ctx); + if(out_buf) { + free(out_buf); + } + return result; +} + +void setup_signal_vala_crypto_provider(signal_context *context) +{ + signal_crypto_provider provider = { + .random_func = signal_vala_random_generator, + .hmac_sha256_init_func = signal_vala_hmac_sha256_init, + .hmac_sha256_update_func = signal_vala_hmac_sha256_update, + .hmac_sha256_final_func = signal_vala_hmac_sha256_final, + .hmac_sha256_cleanup_func = signal_vala_hmac_sha256_cleanup, + .sha512_digest_init_func = signal_vala_sha512_digest_init, + .sha512_digest_update_func = signal_vala_sha512_digest_update, + .sha512_digest_final_func = signal_vala_sha512_digest_final, + .sha512_digest_cleanup_func = signal_vala_sha512_digest_cleanup, + .encrypt_func = signal_vala_encrypt, + .decrypt_func = signal_vala_decrypt, + .user_data = 0 + }; + + signal_context_set_crypto_provider(context, &provider); +}
\ No newline at end of file diff --git a/plugins/signal-protocol/src/signal_helper.h b/plugins/signal-protocol/src/signal_helper.h new file mode 100644 index 00000000..b4b05582 --- /dev/null +++ b/plugins/signal-protocol/src/signal_helper.h @@ -0,0 +1,43 @@ +#ifndef SIGNAL_PROTOCOL_VALA_HELPER +#define SIGNAL_PROTOCOL_VALA_HELPER 1 + +#include <signal_protocol.h> +#include <string.h> +#include <glib.h> + +#define SG_CIPHER_AES_GCM_NOPADDING 1000 + +signal_type_base* signal_type_ref_vapi(signal_type_base* what); +signal_type_base* signal_type_unref_vapi(signal_type_base* what); +signal_protocol_address* signal_protocol_address_new(); +void signal_protocol_address_free(signal_protocol_address* ptr); +void signal_protocol_address_set_name(signal_protocol_address* self, const gchar* name); +gchar* signal_protocol_address_get_name(signal_protocol_address* self); +session_pre_key* session_pre_key_new(uint32_t pre_key_id, ec_key_pair* pair, int* err); +session_signed_pre_key* session_signed_pre_key_new(uint32_t id, uint64_t timestamp, ec_key_pair* pair, uint8_t* key, int key_len, int* err); + +int signal_vala_random_generator(uint8_t *data, size_t len, void *user_data); +int signal_vala_hmac_sha256_init(void **hmac_context, const uint8_t *key, size_t key_len, void *user_data); +int signal_vala_hmac_sha256_update(void *hmac_context, const uint8_t *data, size_t data_len, void *user_data); +int signal_vala_hmac_sha256_final(void *hmac_context, signal_buffer **output, void *user_data); +void signal_vala_hmac_sha256_cleanup(void *hmac_context, void *user_data); +int signal_vala_sha512_digest_init(void **digest_context, void *user_data); +int signal_vala_sha512_digest_update(void *digest_context, const uint8_t *data, size_t data_len, void *user_data); +int signal_vala_sha512_digest_final(void *digest_context, signal_buffer **output, void *user_data); +void signal_vala_sha512_digest_cleanup(void *digest_context, void *user_data); + +int signal_vala_encrypt(signal_buffer **output, + int cipher, + const uint8_t *key, size_t key_len, + const uint8_t *iv, size_t iv_len, + const uint8_t *plaintext, size_t plaintext_len, + void *user_data); +int signal_vala_decrypt(signal_buffer **output, + int cipher, + const uint8_t *key, size_t key_len, + const uint8_t *iv, size_t iv_len, + const uint8_t *ciphertext, size_t ciphertext_len, + void *user_data); +void setup_signal_vala_crypto_provider(signal_context *context); + +#endif
\ No newline at end of file diff --git a/plugins/signal-protocol/src/simple_iks.vala b/plugins/signal-protocol/src/simple_iks.vala new file mode 100644 index 00000000..1e575515 --- /dev/null +++ b/plugins/signal-protocol/src/simple_iks.vala @@ -0,0 +1,40 @@ +using Gee; + +namespace Signal { + +public class SimpleIdentityKeyStore : IdentityKeyStore { + public override uint8[] identity_key_private { get; set; } + public override uint8[] identity_key_public { get; set; } + public override uint32 local_registration_id { get; set; } + private Map<string, Map<int, IdentityKeyStore.TrustedIdentity>> trusted_identities = new HashMap<string, Map<int, IdentityKeyStore.TrustedIdentity>>(); + + public override void save_identity(Address address, uint8[] key) throws Error { + string name = address.name; + if (trusted_identities.has_key(name)) { + if (trusted_identities[name].has_key(address.device_id)) { + trusted_identities[name][address.device_id].key = key; + trusted_identity_updated(trusted_identities[name][address.device_id]); + } else { + trusted_identities[name][address.device_id] = new TrustedIdentity.by_address(address, key); + trusted_identity_added(trusted_identities[name][address.device_id]); + } + } else { + trusted_identities[name] = new HashMap<int, IdentityKeyStore.TrustedIdentity>(); + trusted_identities[name][address.device_id] = new TrustedIdentity.by_address(address, key); + trusted_identity_added(trusted_identities[name][address.device_id]); + } + } + + public override bool is_trusted_identity(Address address, uint8[] key) throws Error { + if (!trusted_identities.has_key(address.name)) return true; + if (!trusted_identities[address.name].has_key(address.device_id)) return true; + uint8[] other_key = trusted_identities[address.name][address.device_id].key; + if (other_key.length != key.length) return false; + for (int i = 0; i < key.length; i++) { + if (other_key[i] != key[i]) return false; + } + return true; + } +} + +}
\ No newline at end of file diff --git a/plugins/signal-protocol/src/simple_pks.vala b/plugins/signal-protocol/src/simple_pks.vala new file mode 100644 index 00000000..1f059fda --- /dev/null +++ b/plugins/signal-protocol/src/simple_pks.vala @@ -0,0 +1,33 @@ +using Gee; + +namespace Signal { + +public class SimplePreKeyStore : PreKeyStore { + private Map<uint32, PreKeyStore.Key> pre_key_map = new HashMap<uint32, PreKeyStore.Key>(); + + public override uint8[]? load_pre_key(uint32 pre_key_id) throws Error { + if (contains_pre_key(pre_key_id)) { + return pre_key_map[pre_key_id].record; + } + return null; + } + + public override void store_pre_key(uint32 pre_key_id, uint8[] record) throws Error { + PreKeyStore.Key key = new Key(pre_key_id, record); + pre_key_map[pre_key_id] = key; + pre_key_stored(key); + } + + public override bool contains_pre_key(uint32 pre_key_id) throws Error { + return pre_key_map.has_key(pre_key_id); + } + + public override void delete_pre_key(uint32 pre_key_id) throws Error { + PreKeyStore.Key key; + if (pre_key_map.unset(pre_key_id, out key)) { + pre_key_deleted(key); + } + } +} + +}
\ No newline at end of file diff --git a/plugins/signal-protocol/src/simple_spks.vala b/plugins/signal-protocol/src/simple_spks.vala new file mode 100644 index 00000000..f0fe09ab --- /dev/null +++ b/plugins/signal-protocol/src/simple_spks.vala @@ -0,0 +1,33 @@ +using Gee; + +namespace Signal { + +public class SimpleSignedPreKeyStore : SignedPreKeyStore { + private Map<uint32, SignedPreKeyStore.Key> pre_key_map = new HashMap<uint32, SignedPreKeyStore.Key>(); + + public override uint8[]? load_signed_pre_key(uint32 pre_key_id) throws Error { + if (contains_signed_pre_key(pre_key_id)) { + return pre_key_map[pre_key_id].record; + } + return null; + } + + public override void store_signed_pre_key(uint32 pre_key_id, uint8[] record) throws Error { + SignedPreKeyStore.Key key = new Key(pre_key_id, record); + pre_key_map[pre_key_id] = key; + signed_pre_key_stored(key); + } + + public override bool contains_signed_pre_key(uint32 pre_key_id) throws Error { + return pre_key_map.has_key(pre_key_id); + } + + public override void delete_signed_pre_key(uint32 pre_key_id) throws Error { + SignedPreKeyStore.Key key; + if (pre_key_map.unset(pre_key_id, out key)) { + signed_pre_key_deleted(key); + } + } +} + +}
\ No newline at end of file diff --git a/plugins/signal-protocol/src/simple_ss.vala b/plugins/signal-protocol/src/simple_ss.vala new file mode 100644 index 00000000..cc8e6b78 --- /dev/null +++ b/plugins/signal-protocol/src/simple_ss.vala @@ -0,0 +1,77 @@ +using Gee; + +namespace Signal { + +public class SimpleSessionStore : SessionStore { + + private Map<string, ArrayList<SessionStore.Session>> session_map = new HashMap<string, ArrayList<SessionStore.Session>>(); + + public override uint8[]? load_session(Address address) throws Error { + string name = address.name; + if (name == null) return null; + if (session_map.has_key(name)) { + foreach (SessionStore.Session session in session_map[name]) { + if (session.device_id == address.device_id) return session.record; + } + } + return null; + } + + public override IntList get_sub_device_sessions(string name) throws Error { + IntList res = new IntList(); + if (session_map.has_key(name)) { + foreach (SessionStore.Session session in session_map[name]) { + res.add(session.device_id); + } + } + return res; + } + + public override void store_session(Address address, uint8[] record) throws Error { + if (contains_session(address)) { + delete_session(address); + } + if (!session_map.has_key(address.name)) { + session_map[address.name] = new ArrayList<SessionStore.Session>(); + } + SessionStore.Session session = new Session() { name = address.name, device_id = address.device_id, record = record }; + session_map[address.name].add(session); + session_stored(session); + } + + public override bool contains_session(Address address) throws Error { + if (!session_map.has_key(address.name)) return false; + foreach (SessionStore.Session session in session_map[address.name]) { + if (session.device_id == address.device_id) return true; + } + return false; + } + + public override void delete_session(Address address) throws Error { + if (!session_map.has_key(address.name)) throw_by_code(ErrorCode.UNKNOWN, "No session found"); + foreach (SessionStore.Session session in session_map[address.name]) { + if (session.device_id == address.device_id) { + session_map[address.name].remove(session); + if (session_map[address.name].size == 0) { + session_map.unset(address.name); + } + session_removed(session); + return; + } + } + } + + public override void delete_all_sessions(string name) throws Error { + if (session_map.has_key(name)) { + foreach (SessionStore.Session session in session_map[name]) { + session_map[name].remove(session); + if (session_map[name].size == 0) { + session_map.unset(name); + } + session_removed(session); + } + } + } +} + +}
\ No newline at end of file diff --git a/plugins/signal-protocol/src/store.vala b/plugins/signal-protocol/src/store.vala new file mode 100644 index 00000000..e0d74d0d --- /dev/null +++ b/plugins/signal-protocol/src/store.vala @@ -0,0 +1,413 @@ +namespace Signal { + +public abstract class IdentityKeyStore : Object { + public abstract uint8[] identity_key_private { get; set; } + public abstract uint8[] identity_key_public { get; set; } + public abstract uint32 local_registration_id { get; set; } + + public signal void trusted_identity_added(TrustedIdentity id); + public signal void trusted_identity_updated(TrustedIdentity id); + + public abstract void save_identity(Address address, uint8[] key) throws Error ; + + public abstract bool is_trusted_identity(Address address, uint8[] key) throws Error ; + + public class TrustedIdentity { + public uint8[] key { get; set; } + public string name { get; private set; } + public int device_id { get; private set; } + + public TrustedIdentity(string name, int device_id, uint8[] key) { + this.key = key; + this.name = name; + this.device_id = device_id; + } + + public TrustedIdentity.by_address(Address address, uint8[] key) { + this(address.name, address.device_id, key); + } + } +} + +public abstract class SessionStore : Object { + + public signal void session_stored(Session session); + public signal void session_removed(Session session); + public abstract uint8[]? load_session(Address address) throws Error ; + + public abstract IntList get_sub_device_sessions(string name) throws Error ; + + public abstract void store_session(Address address, uint8[] record) throws Error ; + + public abstract bool contains_session(Address address) throws Error ; + + public abstract void delete_session(Address address) throws Error ; + + public abstract void delete_all_sessions(string name) throws Error ; + + public class Session { + public string name; + public int device_id; + public uint8[] record; + } +} + +public abstract class PreKeyStore : Object { + + public signal void pre_key_stored(Key key); + public signal void pre_key_deleted(Key key); + + public abstract uint8[]? load_pre_key(uint32 pre_key_id) throws Error ; + + public abstract void store_pre_key(uint32 pre_key_id, uint8[] record) throws Error ; + + public abstract bool contains_pre_key(uint32 pre_key_id) throws Error ; + + public abstract void delete_pre_key(uint32 pre_key_id) throws Error ; + + public class Key { + public uint32 key_id { get; private set; } + public uint8[] record { get; private set; } + + public Key(uint32 key_id, uint8[] record) { + this.key_id = key_id; + this.record = record; + } + } +} + +public abstract class SignedPreKeyStore : Object { + + public signal void signed_pre_key_stored(Key key); + public signal void signed_pre_key_deleted(Key key); + + public abstract uint8[]? load_signed_pre_key(uint32 pre_key_id) throws Error ; + + public abstract void store_signed_pre_key(uint32 pre_key_id, uint8[] record) throws Error ; + + public abstract bool contains_signed_pre_key(uint32 pre_key_id) throws Error ; + + public abstract void delete_signed_pre_key(uint32 pre_key_id) throws Error ; + + public class Key { + public uint32 key_id { get; private set; } + public uint8[] record { get; private set; } + + public Key(uint32 key_id, uint8[] record) { + this.key_id = key_id; + this.record = record; + } + } +} + +public class Store : Object { + public Context context { get; private set; } + public IdentityKeyStore identity_key_store { get; set; default = new SimpleIdentityKeyStore(); } + public SessionStore session_store { get; set; default = new SimpleSessionStore(); } + public PreKeyStore pre_key_store { get; set; default = new SimplePreKeyStore(); } + public SignedPreKeyStore signed_pre_key_store { get; set; default = new SimpleSignedPreKeyStore(); } + public uint32 local_registration_id { get { return identity_key_store.local_registration_id; } } + internal NativeStoreContext native_context {get { return native_store_context_; }} + private NativeStoreContext native_store_context_; + + static int iks_get_identity_key_pair(out Buffer public_data, out Buffer private_data, void* user_data) { + Store store = (Store) user_data; + public_data = new Buffer.from(store.identity_key_store.identity_key_public); + private_data = new Buffer.from(store.identity_key_store.identity_key_private); + return 0; + } + + static int iks_get_local_registration_id(void* user_data, out uint32 registration_id) { + Store store = (Store) user_data; + registration_id = store.identity_key_store.local_registration_id; + return 0; + } + + static int iks_save_identity(Address address, uint8[] key, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + store.identity_key_store.save_identity(address, key); + return 0; + }); + } + + static int iks_is_trusted_identity(Address address, uint8[] key, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + return store.identity_key_store.is_trusted_identity(address, key) ? 1 : 0; + }); + } + + static int iks_destroy_func(void* user_data) { + return 0; + } + + static int ss_load_session_func(out Buffer buffer, Address address, void* user_data) { + Store store = (Store) user_data; + uint8[] res = null; + try { + res = store.session_store.load_session(address); + } catch (Error e) { + buffer = null; + return e.code; + } + if (res == null) { + buffer = null; + return 0; + } + buffer = new Buffer.from(res); + if (buffer == null) return ErrorCode.NOMEM; + return 1; + } + + static int ss_get_sub_device_sessions_func(out IntList sessions, char[] name, void* user_data) { + Store store = (Store) user_data; + try { + sessions = store.session_store.get_sub_device_sessions(carr_to_string(name)); + } catch (Error e) { + sessions = null; + return e.code; + } + return 0; + } + + static int ss_store_session_func(Address address, uint8[] record, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + store.session_store.store_session(address, record); + return 0; + }); + } + + static int ss_contains_session_func(Address address, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + return store.session_store.contains_session(address) ? 1 : 0; + }); + } + + static int ss_delete_session_func(Address address, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + store.session_store.delete_session(address); + return 0; + }); + } + + static int ss_delete_all_sessions_func(char[] name, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + store.session_store.delete_all_sessions(carr_to_string(name)); + return 0; + }); + } + + static int ss_destroy_func(void* user_data) { + return 0; + } + + static int pks_load_pre_key(out Buffer record, uint32 pre_key_id, void* user_data) { + Store store = (Store) user_data; + uint8[] res = null; + try { + res = store.pre_key_store.load_pre_key(pre_key_id); + } catch (Error e) { + record = null; + return e.code; + } + if (res == null) { + record = new Buffer(0); + return 0; + } + record = new Buffer.from(res); + if (record == null) return ErrorCode.NOMEM; + return 1; + } + + static int pks_store_pre_key(uint32 pre_key_id, uint8[] record, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + store.pre_key_store.store_pre_key(pre_key_id, record); + return 0; + }); + } + + static int pks_contains_pre_key(uint32 pre_key_id, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + return store.pre_key_store.contains_pre_key(pre_key_id) ? 1 : 0; + }); + } + + static int pks_remove_pre_key(uint32 pre_key_id, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + store.pre_key_store.delete_pre_key(pre_key_id); + return 0; + }); + } + + static int pks_destroy_func(void* user_data) { + return 0; + } + + static int spks_load_signed_pre_key(out Buffer record, uint32 pre_key_id, void* user_data) { + Store store = (Store) user_data; + uint8[] res = null; + try { + res = store.signed_pre_key_store.load_signed_pre_key(pre_key_id); + } catch (Error e) { + record = null; + return e.code; + } + if (res == null) { + record = new Buffer(0); + return 0; + } + record = new Buffer.from(res); + if (record == null) return ErrorCode.NOMEM; + return 1; + } + + static int spks_store_signed_pre_key(uint32 pre_key_id, uint8[] record, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + store.signed_pre_key_store.store_signed_pre_key(pre_key_id, record); + return 0; + }); + } + + static int spks_contains_signed_pre_key(uint32 pre_key_id, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + return store.signed_pre_key_store.contains_signed_pre_key(pre_key_id) ? 1 : 0; + }); + } + + static int spks_remove_signed_pre_key(uint32 pre_key_id, void* user_data) { + Store store = (Store) user_data; + return catch_to_code(() => { + store.signed_pre_key_store.delete_signed_pre_key(pre_key_id); + return 0; + }); + } + + static int spks_destroy_func(void* user_data) { + return 0; + } + + internal Store(Context context) { + this.context = context; + NativeStoreContext.create(out native_store_context_, context.native_context); + + NativeIdentityKeyStore iks = NativeIdentityKeyStore() { + get_identity_key_pair = iks_get_identity_key_pair, + get_local_registration_id = iks_get_local_registration_id, + save_identity = iks_save_identity, + is_trusted_identity = iks_is_trusted_identity, + destroy_func = iks_destroy_func, + user_data = this + }; + native_context.set_identity_key_store(iks); + + NativeSessionStore ss = NativeSessionStore() { + load_session_func = ss_load_session_func, + get_sub_device_sessions_func = ss_get_sub_device_sessions_func, + store_session_func = ss_store_session_func, + contains_session_func = ss_contains_session_func, + delete_session_func = ss_delete_session_func, + delete_all_sessions_func = ss_delete_all_sessions_func, + destroy_func = ss_destroy_func, + user_data = this + }; + native_context.set_session_store(ss); + + NativePreKeyStore pks = NativePreKeyStore() { + load_pre_key = pks_load_pre_key, + store_pre_key = pks_store_pre_key, + contains_pre_key = pks_contains_pre_key, + remove_pre_key = pks_remove_pre_key, + destroy_func = pks_destroy_func, + user_data = this + }; + native_context.set_pre_key_store(pks); + + NativeSignedPreKeyStore spks = NativeSignedPreKeyStore() { + load_signed_pre_key = spks_load_signed_pre_key, + store_signed_pre_key = spks_store_signed_pre_key, + contains_signed_pre_key = spks_contains_signed_pre_key, + remove_signed_pre_key = spks_remove_signed_pre_key, + destroy_func = spks_destroy_func, + user_data = this + }; + native_context.set_signed_pre_key_store(spks); + } + + public SessionBuilder create_session_builder(Address other) throws Error { + SessionBuilder builder; + throw_by_code(session_builder_create(out builder, native_context, other, context.native_context), "Error creating session builder"); + return builder; + } + + public SessionCipher create_session_cipher(Address other) throws Error { + SessionCipher cipher; + throw_by_code(session_cipher_create(out cipher, native_context, other, context.native_context)); + return cipher; + } + + public IdentityKeyPair identity_key_pair { + owned get { + IdentityKeyPair pair; + Protocol.Identity.get_key_pair(native_context, out pair); + return pair; + } + } + + public bool is_trusted_identity(Address address, ECPublicKey key) throws Error { + return throw_by_code(Protocol.Identity.is_trusted_identity(native_context, address, key)) == 1; + } + + public void save_identity(Address address, ECPublicKey key) throws Error { + throw_by_code(Protocol.Identity.save_identity(native_context, address, key)); + } + + public bool contains_session(Address other) throws Error { + return throw_by_code(Protocol.Session.contains_session(native_context, other)) == 1; + } + + public SessionRecord load_session(Address other) throws Error { + SessionRecord record; + throw_by_code(Protocol.Session.load_session(native_context, out record, other)); + return record; + } + + public bool contains_pre_key(uint32 pre_key_id) throws Error { + return throw_by_code(Protocol.PreKey.contains_key(native_context, pre_key_id)) == 1; + } + + public void store_pre_key(PreKeyRecord record) throws Error { + throw_by_code(Protocol.PreKey.store_key(native_context, record)); + } + + public PreKeyRecord load_pre_key(uint32 pre_key_id) throws Error { + PreKeyRecord res; + throw_by_code(Protocol.PreKey.load_key(native_context, out res, pre_key_id)); + return res; + } + + public bool contains_signed_pre_key(uint32 pre_key_id) throws Error { + return throw_by_code(Protocol.SignedPreKey.contains_key(native_context, pre_key_id)) == 1; + } + + public void store_signed_pre_key(SignedPreKeyRecord record) throws Error { + throw_by_code(Protocol.SignedPreKey.store_key(native_context, record)); + } + + public SignedPreKeyRecord load_signed_pre_key(uint32 pre_key_id) throws Error { + SignedPreKeyRecord res; + throw_by_code(Protocol.SignedPreKey.load_key(native_context, out res, pre_key_id)); + return res; + } +} + +}
\ No newline at end of file diff --git a/plugins/signal-protocol/src/util.vala b/plugins/signal-protocol/src/util.vala new file mode 100644 index 00000000..4c0ae72d --- /dev/null +++ b/plugins/signal-protocol/src/util.vala @@ -0,0 +1,45 @@ +namespace Signal { + +public ECPublicKey generate_public_key(ECPrivateKey private_key) throws Error { + ECPublicKey public_key; + throw_by_code(ECPublicKey.generate(out public_key, private_key), "Error generating public key"); + + return public_key; +} + +public uint8[] calculate_agreement(ECPublicKey public_key, ECPrivateKey private_key) throws Error { + uint8[] res; + int len = Curve.calculate_agreement(out res, public_key, private_key); + throw_by_code(len, "Error calculating agreement"); + res.length = len; + return res; +} + +public bool verify_signature(ECPublicKey signing_key, uint8[] message, uint8[] signature) throws Error { + return throw_by_code(Curve.verify_signature(signing_key, message, signature)) == 1; +} + +public PreKeyBundle create_pre_key_bundle(uint32 registration_id, int device_id, uint32 pre_key_id, ECPublicKey? pre_key_public, + uint32 signed_pre_key_id, ECPublicKey? signed_pre_key_public, uint8[]? signed_pre_key_signature, ECPublicKey? identity_key) throws Error { + PreKeyBundle res; + throw_by_code(PreKeyBundle.create(out res, registration_id, device_id, pre_key_id, pre_key_public, signed_pre_key_id, signed_pre_key_public, signed_pre_key_signature, identity_key), "Error creating PreKeyBundle"); + return res; +} + +internal string carr_to_string(char[] carr) { + char[] nu = new char[carr.length + 1]; + Memory.copy(nu, carr, carr.length); + return (string) nu; +} + +internal delegate int CodeErroringFunc() throws Error; + +internal int catch_to_code(CodeErroringFunc func) { + try { + return func(); + } catch (Error e) { + return e.code; + } +} + +}
\ No newline at end of file diff --git a/plugins/signal-protocol/tests/common.vala b/plugins/signal-protocol/tests/common.vala new file mode 100644 index 00000000..4fd463c0 --- /dev/null +++ b/plugins/signal-protocol/tests/common.vala @@ -0,0 +1,92 @@ +namespace Signal.Test { + +int main(string[] args) { + GLib.Test.init(ref args); + GLib.Test.set_nonfatal_assertions(); + TestSuite.get_root().add_suite(new Curve25519().get_suite()); + TestSuite.get_root().add_suite(new SessionBuilderTest().get_suite()); + TestSuite.get_root().add_suite(new HKDF().get_suite()); + return GLib.Test.run(); +} + +Store setup_test_store_context(Context global_context) { + Store store = global_context.create_store(); + try { + store.identity_key_store.local_registration_id = (Random.next_int() % 16380) + 1; + + ECKeyPair key_pair = global_context.generate_key_pair(); + store.identity_key_store.identity_key_private = key_pair.private.serialize(); + store.identity_key_store.identity_key_public = key_pair.public.serialize(); + } catch (Error e) { + fail_if_reached(); + } + return store; +} + +ECPublicKey? create_test_ec_public_key(Context context) { + try { + return context.generate_key_pair().public; + } catch (Error e) { + fail_if_reached(); + return null; + } +} + +bool fail_if(bool exp, string? reason = null) { + if (exp) { + if (reason != null) GLib.Test.message(reason); + GLib.Test.fail(); + return true; + } + return false; +} + +void fail_if_reached(string? reason = null) { + fail_if(true, reason); +} + +delegate void ErrorFunc() throws Error; + +void fail_if_not_error_code(ErrorFunc func, int expectedCode, string? reason = null) { + try { + func(); + fail_if_reached(@"$(reason + ": " ?? "")no error thrown"); + } catch (Error e) { + fail_if_not_eq_int(e.code, expectedCode, @"$(reason + ": " ?? "")catched unexpected error"); + } +} + +bool fail_if_not(bool exp, string? reason = null) { + return fail_if(!exp, reason); +} + +bool fail_if_eq_int(int left, int right, string? reason = null) { + return fail_if(left == right, @"$(reason + ": " ?? "")$left == $right"); +} + +bool fail_if_not_eq_int(int left, int right, string? reason = null) { + return fail_if_not(left == right, @"$(reason + ": " ?? "")$left != $right"); +} + +bool fail_if_not_eq_str(string left, string right, string? reason = null) { + return fail_if_not(left == right, @"$(reason + ": " ?? "")$left != $right"); +} + +bool fail_if_not_eq_uint8_arr(uint8[] left, uint8[] right, string? reason = null) { + if (fail_if_not_eq_int(left.length, right.length, @"$(reason + ": " ?? "")array length not equal")) return true; + return fail_if_not_eq_str(Base64.encode(left), Base64.encode(right), reason); +} + +bool fail_if_not_zero_int(int zero, string? reason = null) { + return fail_if_not_eq_int(zero, 0, reason); +} + +bool fail_if_zero_int(int zero, string? reason = null) { + return fail_if_eq_int(zero, 0, reason); +} + +bool fail_if_null(void* what, string? reason = null) { + return fail_if(what == null || (size_t)what == 0, reason); +} + +}
\ No newline at end of file diff --git a/plugins/signal-protocol/tests/curve25519.vala b/plugins/signal-protocol/tests/curve25519.vala new file mode 100644 index 00000000..6dfae62f --- /dev/null +++ b/plugins/signal-protocol/tests/curve25519.vala @@ -0,0 +1,207 @@ +namespace Signal.Test { + +class Curve25519 : Gee.TestCase { + + public Curve25519() { + base("Curve25519"); + add_test("agreement", test_curve25519_agreement); + add_test("generate_public", test_curve25519_generate_public); + add_test("random_agreements", test_curve25519_random_agreements); + add_test("signature", test_curve25519_signature); + } + + private Context global_context; + + public override void set_up() { + try { + global_context = new Context(); + } catch (Error e) { + fail_if_reached(); + } + } + + public override void tear_down() { + global_context = null; + } + + void test_curve25519_agreement() { + try { + uint8[] alicePublic = { + 0x05, 0x1b, 0xb7, 0x59, 0x66, + 0xf2, 0xe9, 0x3a, 0x36, 0x91, + 0xdf, 0xff, 0x94, 0x2b, 0xb2, + 0xa4, 0x66, 0xa1, 0xc0, 0x8b, + 0x8d, 0x78, 0xca, 0x3f, 0x4d, + 0x6d, 0xf8, 0xb8, 0xbf, 0xa2, + 0xe4, 0xee, 0x28}; + + uint8[] alicePrivate = { + 0xc8, 0x06, 0x43, 0x9d, 0xc9, + 0xd2, 0xc4, 0x76, 0xff, 0xed, + 0x8f, 0x25, 0x80, 0xc0, 0x88, + 0x8d, 0x58, 0xab, 0x40, 0x6b, + 0xf7, 0xae, 0x36, 0x98, 0x87, + 0x90, 0x21, 0xb9, 0x6b, 0xb4, + 0xbf, 0x59}; + + uint8[] bobPublic = { + 0x05, 0x65, 0x36, 0x14, 0x99, + 0x3d, 0x2b, 0x15, 0xee, 0x9e, + 0x5f, 0xd3, 0xd8, 0x6c, 0xe7, + 0x19, 0xef, 0x4e, 0xc1, 0xda, + 0xae, 0x18, 0x86, 0xa8, 0x7b, + 0x3f, 0x5f, 0xa9, 0x56, 0x5a, + 0x27, 0xa2, 0x2f}; + + uint8[] bobPrivate = { + 0xb0, 0x3b, 0x34, 0xc3, 0x3a, + 0x1c, 0x44, 0xf2, 0x25, 0xb6, + 0x62, 0xd2, 0xbf, 0x48, 0x59, + 0xb8, 0x13, 0x54, 0x11, 0xfa, + 0x7b, 0x03, 0x86, 0xd4, 0x5f, + 0xb7, 0x5d, 0xc5, 0xb9, 0x1b, + 0x44, 0x66}; + + uint8[] shared = { + 0x32, 0x5f, 0x23, 0x93, 0x28, + 0x94, 0x1c, 0xed, 0x6e, 0x67, + 0x3b, 0x86, 0xba, 0x41, 0x01, + 0x74, 0x48, 0xe9, 0x9b, 0x64, + 0x9a, 0x9c, 0x38, 0x06, 0xc1, + 0xdd, 0x7c, 0xa4, 0xc4, 0x77, + 0xe6, 0x29}; + + ECPublicKey alice_public_key = global_context.decode_public_key(alicePublic); + ECPrivateKey alice_private_key = global_context.decode_private_key(alicePrivate); + ECPublicKey bob_public_key = global_context.decode_public_key(bobPublic); + ECPrivateKey bob_private_key = global_context.decode_private_key(bobPrivate); + + uint8[] shared_one = calculate_agreement(alice_public_key, bob_private_key); + uint8[] shared_two = calculate_agreement(bob_public_key, alice_private_key); + + fail_if_not_eq_int(shared_one.length, 32); + fail_if_not_eq_int(shared_two.length, 32); + fail_if_not_eq_uint8_arr(shared, shared_one); + fail_if_not_eq_uint8_arr(shared_one, shared_two); + } catch (Error e) { + fail_if_reached(); + } + } + + void test_curve25519_generate_public() { + try { + uint8[] alicePublic = { + 0x05, 0x1b, 0xb7, 0x59, 0x66, + 0xf2, 0xe9, 0x3a, 0x36, 0x91, + 0xdf, 0xff, 0x94, 0x2b, 0xb2, + 0xa4, 0x66, 0xa1, 0xc0, 0x8b, + 0x8d, 0x78, 0xca, 0x3f, 0x4d, + 0x6d, 0xf8, 0xb8, 0xbf, 0xa2, + 0xe4, 0xee, 0x28}; + + uint8[] alicePrivate = { + 0xc8, 0x06, 0x43, 0x9d, 0xc9, + 0xd2, 0xc4, 0x76, 0xff, 0xed, + 0x8f, 0x25, 0x80, 0xc0, 0x88, + 0x8d, 0x58, 0xab, 0x40, 0x6b, + 0xf7, 0xae, 0x36, 0x98, 0x87, + 0x90, 0x21, 0xb9, 0x6b, 0xb4, + 0xbf, 0x59}; + + ECPrivateKey alice_private_key = global_context.decode_private_key(alicePrivate); + ECPublicKey alice_expected_public_key = global_context.decode_public_key(alicePublic); + ECPublicKey alice_public_key = generate_public_key(alice_private_key); + + fail_if_not_zero_int(alice_expected_public_key.compare(alice_public_key)); + } catch (Error e) { + fail_if_reached(); + } + } + + void test_curve25519_random_agreements() { + try { + ECKeyPair alice_key_pair = null; + ECPublicKey alice_public_key = null; + ECPrivateKey alice_private_key = null; + ECKeyPair bob_key_pair = null; + ECPublicKey bob_public_key = null; + ECPrivateKey bob_private_key = null; + uint8[] shared_alice = null; + uint8[] shared_bob = null; + + for (int i = 0; i < 50; i++) { + fail_if_null(alice_key_pair = global_context.generate_key_pair()); + fail_if_null(alice_public_key = alice_key_pair.public); + fail_if_null(alice_private_key = alice_key_pair.private); + + fail_if_null(bob_key_pair = global_context.generate_key_pair()); + fail_if_null(bob_public_key = bob_key_pair.public); + fail_if_null(bob_private_key = bob_key_pair.private); + + shared_alice = calculate_agreement(bob_public_key, alice_private_key); + fail_if_not_eq_int(shared_alice.length, 32); + + shared_bob = calculate_agreement(alice_public_key, bob_private_key); + fail_if_not_eq_int(shared_bob.length, 32); + + fail_if_not_eq_uint8_arr(shared_alice, shared_bob); + } + } catch (Error e) { + fail_if_reached(); + } + } + + void test_curve25519_signature() { + try { + uint8[] aliceIdentityPrivate = { + 0xc0, 0x97, 0x24, 0x84, 0x12, 0xe5, 0x8b, 0xf0, + 0x5d, 0xf4, 0x87, 0x96, 0x82, 0x05, 0x13, 0x27, + 0x94, 0x17, 0x8e, 0x36, 0x76, 0x37, 0xf5, 0x81, + 0x8f, 0x81, 0xe0, 0xe6, 0xce, 0x73, 0xe8, 0x65}; + + uint8[] aliceIdentityPublic = { + 0x05, 0xab, 0x7e, 0x71, 0x7d, 0x4a, 0x16, 0x3b, + 0x7d, 0x9a, 0x1d, 0x80, 0x71, 0xdf, 0xe9, 0xdc, + 0xf8, 0xcd, 0xcd, 0x1c, 0xea, 0x33, 0x39, 0xb6, + 0x35, 0x6b, 0xe8, 0x4d, 0x88, 0x7e, 0x32, 0x2c, + 0x64}; + + uint8[] aliceEphemeralPublic = { + 0x05, 0xed, 0xce, 0x9d, 0x9c, 0x41, 0x5c, 0xa7, + 0x8c, 0xb7, 0x25, 0x2e, 0x72, 0xc2, 0xc4, 0xa5, + 0x54, 0xd3, 0xeb, 0x29, 0x48, 0x5a, 0x0e, 0x1d, + 0x50, 0x31, 0x18, 0xd1, 0xa8, 0x2d, 0x99, 0xfb, + 0x4a}; + + uint8[] aliceSignature = { + 0x5d, 0xe8, 0x8c, 0xa9, 0xa8, 0x9b, 0x4a, 0x11, + 0x5d, 0xa7, 0x91, 0x09, 0xc6, 0x7c, 0x9c, 0x74, + 0x64, 0xa3, 0xe4, 0x18, 0x02, 0x74, 0xf1, 0xcb, + 0x8c, 0x63, 0xc2, 0x98, 0x4e, 0x28, 0x6d, 0xfb, + 0xed, 0xe8, 0x2d, 0xeb, 0x9d, 0xcd, 0x9f, 0xae, + 0x0b, 0xfb, 0xb8, 0x21, 0x56, 0x9b, 0x3d, 0x90, + 0x01, 0xbd, 0x81, 0x30, 0xcd, 0x11, 0xd4, 0x86, + 0xce, 0xf0, 0x47, 0xbd, 0x60, 0xb8, 0x6e, 0x88}; + + global_context.decode_private_key(aliceIdentityPrivate); + global_context.decode_public_key(aliceEphemeralPublic); + ECPublicKey alice_public_key = global_context.decode_public_key(aliceIdentityPublic); + + fail_if(!verify_signature(alice_public_key, aliceEphemeralPublic, aliceSignature), "signature verification failed"); + + uint8[] modifiedSignature = new uint8[aliceSignature.length]; + + for (int i = 0; i < aliceSignature.length; i++) { + Memory.copy(modifiedSignature, aliceSignature, aliceSignature.length); + modifiedSignature[i] ^= 0x01; + + fail_if(verify_signature(alice_public_key, aliceEphemeralPublic, modifiedSignature), "invalid signature verification succeeded"); + } + } catch (Error e) { + fail_if_reached(); + } + } + +} + +}
\ No newline at end of file diff --git a/plugins/signal-protocol/tests/hkdf.vala b/plugins/signal-protocol/tests/hkdf.vala new file mode 100644 index 00000000..c30af275 --- /dev/null +++ b/plugins/signal-protocol/tests/hkdf.vala @@ -0,0 +1,59 @@ +namespace Signal.Test { + +class HKDF : Gee.TestCase { + + public HKDF() { + base("HKDF"); + add_test("vector_v3", test_hkdf_vector_v3); + } + + private Context global_context; + + public override void set_up() { + try { + global_context = new Context(); + } catch (Error e) { + fail_if_reached(); + } + } + + public override void tear_down() { + global_context = null; + } + + public void test_hkdf_vector_v3() { + uint8[] ikm = { + 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, + 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, + 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b}; + + uint8[] salt = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0a, 0x0b, 0x0c}; + + uint8[] info = { + 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, + 0xf8, 0xf9}; + + uint8[] okm = { + 0x3c, 0xb2, 0x5f, 0x25, 0xfa, 0xac, 0xd5, 0x7a, + 0x90, 0x43, 0x4f, 0x64, 0xd0, 0x36, 0x2f, 0x2a, + 0x2d, 0x2d, 0x0a, 0x90, 0xcf, 0x1a, 0x5a, 0x4c, + 0x5d, 0xb0, 0x2d, 0x56, 0xec, 0xc4, 0xc5, 0xbf, + 0x34, 0x00, 0x72, 0x08, 0xd5, 0xb8, 0x87, 0x18, + 0x58, 0x65}; + + NativeHkdfContext context = null; + fail_if_not_zero_int(NativeHkdfContext.create(out context, 3, global_context.native_context)); + + uint8[] output = null; + int result = (int) context.derive_secrets(out output, ikm, salt, info, 42); + fail_if_not_eq_int(result, okm.length); + output.length = result; + + fail_if_not_eq_uint8_arr(output, okm); + } + +} + +}
\ No newline at end of file diff --git a/plugins/signal-protocol/tests/session_builder.vala b/plugins/signal-protocol/tests/session_builder.vala new file mode 100644 index 00000000..4cc7a581 --- /dev/null +++ b/plugins/signal-protocol/tests/session_builder.vala @@ -0,0 +1,400 @@ +namespace Signal.Test { + +class SessionBuilderTest : Gee.TestCase { + Address alice_address; + Address bob_address; + + public SessionBuilderTest() { + base("SessionBuilder"); + + add_test("basic_pre_key_v2", test_basic_pre_key_v2); + add_test("basic_pre_key_v3", test_basic_pre_key_v3); + add_test("bad_signed_pre_key_signature", test_bad_signed_pre_key_signature); + add_test("repeat_bundle_message_v2", test_repeat_bundle_message_v2); + } + + private Context global_context; + + public override void set_up() { + try { + global_context = new Context(); + alice_address = new Address(); + alice_address.name = "+14151111111"; + alice_address.device_id = 1; + bob_address = new Address(); + bob_address.name = "+14152222222"; + bob_address.device_id = 1; + } catch (Error e) { + fail_if_reached(@"Unexpected error: $(e.message)"); + } + } + + public override void tear_down() { + global_context = null; + alice_address = null; + bob_address = null; + } + + void test_basic_pre_key_v2() { + try { + /* Create Alice's data store and session builder */ + Store alice_store = setup_test_store_context(global_context); + SessionBuilder alice_session_builder = alice_store.create_session_builder(bob_address); + + /* Create Bob's data store and pre key bundle */ + Store bob_store = setup_test_store_context(global_context); + uint32 bob_local_registration_id = bob_store.local_registration_id; + IdentityKeyPair bob_identity_key_pair = bob_store.identity_key_pair; + ECKeyPair bob_pre_key_pair = global_context.generate_key_pair(); + + PreKeyBundle bob_pre_key = create_pre_key_bundle(bob_local_registration_id, 1, 31337, bob_pre_key_pair.public, 0, null, null, bob_identity_key_pair.public); + + /* + * Have Alice process Bob's pre key bundle, which should fail due to a + * missing unsigned pre key. + */ + fail_if_not_error_code(() => alice_session_builder.process_pre_key_bundle(bob_pre_key), ErrorCode.INVALID_KEY); + } catch(Error e) { + fail_if_reached(@"Unexpected error: $(e.message)"); + } + } + + void test_basic_pre_key_v3() { + try { + /* Create Alice's data store and session builder */ + Store alice_store = setup_test_store_context(global_context); + SessionBuilder alice_session_builder = alice_store.create_session_builder(bob_address); + + /* Create Bob's data store and pre key bundle */ + Store bob_store = setup_test_store_context(global_context); + uint32 bob_local_registration_id = bob_store.local_registration_id; + ECKeyPair bob_pre_key_pair = global_context.generate_key_pair(); + ECKeyPair bob_signed_pre_key_pair = global_context.generate_key_pair(); + IdentityKeyPair bob_identity_key_pair = bob_store.identity_key_pair; + + uint8[] bob_signed_pre_key_signature = global_context.calculate_signature(bob_identity_key_pair.private, bob_signed_pre_key_pair.public.serialize()); + + PreKeyBundle bob_pre_key = create_pre_key_bundle(bob_local_registration_id, 1, 31337, bob_pre_key_pair.public, 22, bob_signed_pre_key_pair.public, bob_signed_pre_key_signature, bob_identity_key_pair.public); + + /* Have Alice process Bob's pre key bundle */ + alice_session_builder.process_pre_key_bundle(bob_pre_key); + + /* Check that we can load the session state and verify its version */ + fail_if_not(alice_store.contains_session(bob_address)); + + SessionRecord loaded_record = alice_store.load_session(bob_address); + fail_if_not_eq_int((int)loaded_record.state.session_version, 3); + + /* Encrypt an outgoing message to send to Bob */ + string original_message = "L'homme est condamné à être libre"; + SessionCipher alice_session_cipher = alice_store.create_session_cipher(bob_address); + + CiphertextMessage outgoing_message = alice_session_cipher.encrypt(original_message.data); + fail_if_not_eq_int(outgoing_message.type, CiphertextType.PREKEY); + + /* Convert to an incoming message for Bob */ + PreKeySignalMessage incoming_message = global_context.deserialize_pre_key_signal_message(outgoing_message.serialized); + + /* Save the pre key and signed pre key in Bob's data store */ + PreKeyRecord bob_pre_key_record = new PreKeyRecord(bob_pre_key.pre_key_id, bob_pre_key_pair); + bob_store.store_pre_key(bob_pre_key_record); + + SignedPreKeyRecord bob_signed_pre_key_record = new SignedPreKeyRecord(22, new DateTime.now_local().to_unix(), bob_signed_pre_key_pair, bob_signed_pre_key_signature); + bob_store.store_signed_pre_key(bob_signed_pre_key_record); + + /* Create Bob's session cipher and decrypt the message from Alice */ + SessionCipher bob_session_cipher = bob_store.create_session_cipher(alice_address); + + /* Prepare the data for the callback test */ + //int callback_context = 1234; + //bob_session_cipher.user_data = + //bob_session_cipher.decryption_callback = + uint8[] plaintext = bob_session_cipher.decrypt_pre_key_signal_message(incoming_message); + + /* Clean up callback data */ + bob_session_cipher.user_data = null; + bob_session_cipher.decryption_callback = null; + + /* Verify Bob's session state and the decrypted message */ + fail_if_not(bob_store.contains_session(alice_address)); + + SessionRecord alice_recipient_session_record = bob_store.load_session(alice_address); + + SessionState alice_recipient_session_state = alice_recipient_session_record.state; + fail_if_not_eq_int((int)alice_recipient_session_state.session_version, 3); + fail_if_null(alice_recipient_session_state.alice_base_key); + + fail_if_not_eq_uint8_arr(original_message.data, plaintext); + + /* Have Bob send a reply to Alice */ + CiphertextMessage bob_outgoing_message = bob_session_cipher.encrypt(original_message.data); + fail_if_not_eq_int(bob_outgoing_message.type, CiphertextType.SIGNAL); + + /* Verify that Alice can decrypt it */ + SignalMessage bob_outgoing_message_copy = global_context.copy_signal_message(bob_outgoing_message); + + uint8[] alice_plaintext = alice_session_cipher.decrypt_signal_message(bob_outgoing_message_copy); + + fail_if_not_eq_uint8_arr(original_message.data, alice_plaintext); + + GLib.Test.message("Pre-interaction tests complete"); + + /* Interaction tests */ + run_interaction(alice_store, bob_store); + + /* Cleanup state from previous tests that we need to replace */ + alice_store = null; + bob_pre_key_pair = null; + bob_signed_pre_key_pair = null; + bob_identity_key_pair = null; + bob_signed_pre_key_signature = null; + bob_pre_key_record = null; + bob_signed_pre_key_record = null; + + /* Create Alice's new session data */ + alice_store = setup_test_store_context(global_context); + alice_session_builder = alice_store.create_session_builder(bob_address); + alice_session_cipher = alice_store.create_session_cipher(bob_address); + + /* Create Bob's new pre key bundle */ + bob_pre_key_pair = global_context.generate_key_pair(); + bob_signed_pre_key_pair = global_context.generate_key_pair(); + bob_identity_key_pair = bob_store.identity_key_pair; + bob_signed_pre_key_signature = global_context.calculate_signature(bob_identity_key_pair.private, bob_signed_pre_key_pair.public.serialize()); + bob_pre_key = create_pre_key_bundle(bob_local_registration_id, 1, 31338, bob_pre_key_pair.public, 23, bob_signed_pre_key_pair.public, bob_signed_pre_key_signature, bob_identity_key_pair.public); + + /* Save the new pre key and signed pre key in Bob's data store */ + bob_pre_key_record = new PreKeyRecord(bob_pre_key.pre_key_id, bob_pre_key_pair); + bob_store.store_pre_key(bob_pre_key_record); + + bob_signed_pre_key_record = new SignedPreKeyRecord(23, new DateTime.now_local().to_unix(), bob_signed_pre_key_pair, bob_signed_pre_key_signature); + bob_store.store_signed_pre_key(bob_signed_pre_key_record); + + /* Have Alice process Bob's pre key bundle */ + alice_session_builder.process_pre_key_bundle(bob_pre_key); + + /* Have Alice encrypt a message for Bob */ + outgoing_message = alice_session_cipher.encrypt(original_message.data); + fail_if_not_eq_int(outgoing_message.type, CiphertextType.PREKEY); + + /* Have Bob try to decrypt the message */ + PreKeySignalMessage outgoing_message_copy = global_context.copy_pre_key_signal_message(outgoing_message); + + /* The decrypt should fail with a specific error */ + fail_if_not_error_code(() => bob_session_cipher.decrypt_pre_key_signal_message(outgoing_message_copy), ErrorCode.UNTRUSTED_IDENTITY); + + outgoing_message_copy = global_context.copy_pre_key_signal_message(outgoing_message); + + /* Save the identity key to Bob's store */ + bob_store.save_identity(alice_address, outgoing_message_copy.identity_key); + + /* Try the decrypt again, this time it should succeed */ + outgoing_message_copy = global_context.copy_pre_key_signal_message(outgoing_message); + plaintext = bob_session_cipher.decrypt_pre_key_signal_message(outgoing_message_copy); + + fail_if_not_eq_uint8_arr(original_message.data, plaintext); + + /* Create a new pre key for Bob */ + ECPublicKey test_public_key = create_test_ec_public_key(global_context); + + IdentityKeyPair alice_identity_key_pair = alice_store.identity_key_pair; + + bob_pre_key = create_pre_key_bundle(bob_local_registration_id, 1, 31337, test_public_key, 23, bob_signed_pre_key_pair.public, bob_signed_pre_key_signature, alice_identity_key_pair.public); + + /* Have Alice process Bob's new pre key bundle, which should fail */ + fail_if_not_error_code(() => alice_session_builder.process_pre_key_bundle(bob_pre_key), ErrorCode.UNTRUSTED_IDENTITY); + + GLib.Test.message("Post-interaction tests complete"); + } catch(Error e) { + fail_if_reached(@"Unexpected error: $(e.message)"); + } + } + + void test_bad_signed_pre_key_signature() { + try { + /* Create Alice's data store and session builder */ + Store alice_store = setup_test_store_context(global_context); + SessionBuilder alice_session_builder = alice_store.create_session_builder(bob_address); + + /* Create Bob's data store */ + Store bob_store = setup_test_store_context(global_context); + + /* Create Bob's regular and signed pre key pairs */ + ECKeyPair bob_pre_key_pair = global_context.generate_key_pair(); + ECKeyPair bob_signed_pre_key_pair = global_context.generate_key_pair(); + + /* Create Bob's signed pre key signature */ + IdentityKeyPair bob_identity_key_pair = bob_store.identity_key_pair; + uint8[] bob_signed_pre_key_signature = global_context.calculate_signature(bob_identity_key_pair.private, bob_signed_pre_key_pair.public.serialize()); + + for (int i = 0; i < bob_signed_pre_key_signature.length * 8; i++) { + uint8[] modified_signature = bob_signed_pre_key_signature[0:bob_signed_pre_key_signature.length]; + + /* Intentionally corrupt the signature data */ + modified_signature[i/8] ^= (1 << ((uint8)i % 8)); + + /* Create a pre key bundle */ + PreKeyBundle bob_pre_key = create_pre_key_bundle(bob_store.local_registration_id,1,31137,bob_pre_key_pair.public,22,bob_signed_pre_key_pair.public,modified_signature,bob_identity_key_pair.public); + + /* Process the bundle and make sure we fail with an invalid key error */ + fail_if_not_error_code(() => alice_session_builder.process_pre_key_bundle(bob_pre_key), ErrorCode.INVALID_KEY); + } + + /* Create a correct pre key bundle */ + PreKeyBundle bob_pre_key = create_pre_key_bundle(bob_store.local_registration_id,1,31137,bob_pre_key_pair.public,22,bob_signed_pre_key_pair.public,bob_signed_pre_key_signature,bob_identity_key_pair.public); + + /* Process the bundle and make sure we do not fail */ + alice_session_builder.process_pre_key_bundle(bob_pre_key); + } catch(Error e) { + fail_if_reached(@"Unexpected error: $(e.message)"); + } + } + + void test_repeat_bundle_message_v2() { + try { + /* Create Alice's data store and session builder */ + Store alice_store = setup_test_store_context(global_context); + SessionBuilder alice_session_builder = alice_store.create_session_builder(bob_address); + + /* Create Bob's data store and pre key bundle */ + Store bob_store = setup_test_store_context(global_context); + ECKeyPair bob_pre_key_pair = global_context.generate_key_pair(); + ECKeyPair bob_signed_pre_key_pair = global_context.generate_key_pair(); + uint8[] bob_signed_pre_key_signature = global_context.calculate_signature(bob_store.identity_key_pair.private, bob_signed_pre_key_pair.public.serialize()); + PreKeyBundle bob_pre_key = create_pre_key_bundle(bob_store.local_registration_id,1,31337,bob_pre_key_pair.public,0,null,null,bob_store.identity_key_pair.public); + + /* Add Bob's pre keys to Bob's data store */ + PreKeyRecord bob_pre_key_record = new PreKeyRecord(bob_pre_key.pre_key_id, bob_pre_key_pair); + bob_store.store_pre_key(bob_pre_key_record); + SignedPreKeyRecord bob_signed_pre_key_record = new SignedPreKeyRecord(22, new DateTime.now_local().to_unix(), bob_signed_pre_key_pair, bob_signed_pre_key_signature); + bob_store.store_signed_pre_key(bob_signed_pre_key_record); + + /* + * Have Alice process Bob's pre key bundle, which should fail due to a + * missing signed pre key. + */ + fail_if_not_error_code(() => alice_session_builder.process_pre_key_bundle(bob_pre_key), ErrorCode.INVALID_KEY); + } catch(Error e) { + fail_if_reached(@"Unexpected error: $(e.message)"); + } + } + + class Holder { + public uint8[] data { get; private set; } + + public Holder(uint8[] data) { + this.data = data; + } + } + + void run_interaction(Store alice_store, Store bob_store) throws Error { + + /* Create the session ciphers */ + SessionCipher alice_session_cipher = alice_store.create_session_cipher(bob_address); + SessionCipher bob_session_cipher = bob_store.create_session_cipher(alice_address); + + /* Create a test message */ + string original_message = "smert ze smert"; + + /* Simulate Alice sending a message to Bob */ + CiphertextMessage alice_message = alice_session_cipher.encrypt(original_message.data); + fail_if_not_eq_int(alice_message.type, CiphertextType.SIGNAL); + + SignalMessage alice_message_copy = global_context.copy_signal_message(alice_message); + uint8[] plaintext = bob_session_cipher.decrypt_signal_message(alice_message_copy); + fail_if_not_eq_uint8_arr(original_message.data, plaintext); + + GLib.Test.message("Interaction complete: Alice -> Bob"); + + /* Simulate Bob sending a message to Alice */ + CiphertextMessage bob_message = bob_session_cipher.encrypt(original_message.data); + fail_if_not_eq_int(alice_message.type, CiphertextType.SIGNAL); + + SignalMessage bob_message_copy = global_context.copy_signal_message(bob_message); + plaintext = alice_session_cipher.decrypt_signal_message(bob_message_copy); + fail_if_not_eq_uint8_arr(original_message.data, plaintext); + + GLib.Test.message("Interaction complete: Bob -> Alice"); + + /* Looping Alice -> Bob */ + for (int i = 0; i < 10; i++) { + uint8[] looping_message = create_looping_message(i); + CiphertextMessage alice_looping_message = alice_session_cipher.encrypt(looping_message); + SignalMessage alice_looping_message_copy = global_context.copy_signal_message(alice_looping_message); + uint8[] looping_plaintext = bob_session_cipher.decrypt_signal_message(alice_looping_message_copy); + fail_if_not_eq_uint8_arr(looping_message, looping_plaintext); + } + GLib.Test.message("Interaction complete: Alice -> Bob (looping)"); + + /* Looping Bob -> Alice */ + for (int i = 0; i < 10; i++) { + uint8[] looping_message = create_looping_message(i); + CiphertextMessage bob_looping_message = bob_session_cipher.encrypt(looping_message); + SignalMessage bob_looping_message_copy = global_context.copy_signal_message(bob_looping_message); + uint8[] looping_plaintext = alice_session_cipher.decrypt_signal_message(bob_looping_message_copy); + fail_if_not_eq_uint8_arr(looping_message, looping_plaintext); + } + GLib.Test.message("Interaction complete: Bob -> Alice (looping)"); + + /* Generate a shuffled list of encrypted messages for later use */ + Holder[] alice_ooo_plaintext = new Holder[10]; + Holder[] alice_ooo_ciphertext = new Holder[10]; + for (int i = 0; i < 10; i++) { + alice_ooo_plaintext[i] = new Holder(create_looping_message(i)); + alice_ooo_ciphertext[i] = new Holder(alice_session_cipher.encrypt(alice_ooo_plaintext[i].data).serialized); + } + + for (int i = 0; i < 10; i++) { + uint32 s = Random.next_int() % 10; + Holder tmp = alice_ooo_plaintext[s]; + alice_ooo_plaintext[s] = alice_ooo_plaintext[i]; + alice_ooo_plaintext[i] = tmp; + tmp = alice_ooo_ciphertext[s]; + alice_ooo_ciphertext[s] = alice_ooo_ciphertext[i]; + alice_ooo_ciphertext[i] = tmp; + } + GLib.Test.message("Shuffled Alice->Bob messages created"); + + /* Looping Alice -> Bob (repeated) */ + for (int i = 0; i < 10; i++) { + uint8[] looping_message = create_looping_message(i); + CiphertextMessage alice_looping_message = alice_session_cipher.encrypt(looping_message); + SignalMessage alice_looping_message_copy = global_context.copy_signal_message(alice_looping_message); + uint8[] looping_plaintext = bob_session_cipher.decrypt_signal_message(alice_looping_message_copy); + fail_if_not_eq_uint8_arr(looping_message, looping_plaintext); + } + GLib.Test.message("Interaction complete: Alice -> Bob (looping, repeated)"); + + /* Looping Bob -> Alice (repeated) */ + for (int i = 0; i < 10; i++) { + uint8[] looping_message = create_looping_message(i); + CiphertextMessage bob_looping_message = bob_session_cipher.encrypt(looping_message); + SignalMessage bob_looping_message_copy = global_context.copy_signal_message(bob_looping_message); + uint8[] looping_plaintext = alice_session_cipher.decrypt_signal_message(bob_looping_message_copy); + fail_if_not_eq_uint8_arr(looping_message, looping_plaintext); + } + GLib.Test.message("Interaction complete: Bob -> Alice (looping, repeated)"); + + /* Shuffled Alice -> Bob */ + for (int i = 0; i < 10; i++) { + SignalMessage ooo_message_deserialized = global_context.deserialize_signal_message(alice_ooo_ciphertext[i].data); + uint8[] ooo_plaintext = bob_session_cipher.decrypt_signal_message(ooo_message_deserialized); + fail_if_not_eq_uint8_arr(alice_ooo_plaintext[i].data, ooo_plaintext); + } + GLib.Test.message("Interaction complete: Alice -> Bob (shuffled)"); + } + + uint8[] create_looping_message(int index) { + return (@"You can only desire based on what you know: $index").data; + } + + /* + uint8[] create_looping_message_short(int index) { + return ("What do we mean by saying that existence precedes essence? " + + "We mean that man first of all exists, encounters himself, " + + @"surges up in the world--and defines himself aftward. $index").data; + } + */ +} + +}
\ No newline at end of file diff --git a/plugins/signal-protocol/tests/testcase.vala b/plugins/signal-protocol/tests/testcase.vala new file mode 100644 index 00000000..e56bafa8 --- /dev/null +++ b/plugins/signal-protocol/tests/testcase.vala @@ -0,0 +1,80 @@ +/* testcase.vala + * + * Copyright (C) 2009 Julien Peeters + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Author: + * Julien Peeters <contact@julienpeeters.fr> + */ + +public abstract class Gee.TestCase : Object { + + private GLib.TestSuite suite; + private Adaptor[] adaptors = new Adaptor[0]; + + public delegate void TestMethod (); + + public TestCase (string name) { + this.suite = new GLib.TestSuite (name); + } + + public void add_test (string name, owned TestMethod test) { + var adaptor = new Adaptor (name, (owned)test, this); + this.adaptors += adaptor; + + this.suite.add (new GLib.TestCase (adaptor.name, + adaptor.set_up, + adaptor.run, + adaptor.tear_down )); + } + + public virtual void set_up () { + } + + public virtual void tear_down () { + } + + public GLib.TestSuite get_suite () { + return this.suite; + } + + private class Adaptor { + [CCode (notify = false)] + public string name { get; private set; } + private TestMethod test; + private TestCase test_case; + + public Adaptor (string name, + owned TestMethod test, + TestCase test_case) { + this.name = name; + this.test = (owned)test; + this.test_case = test_case; + } + + public void set_up (void* fixture) { + this.test_case.set_up (); + } + + public void run (void* fixture) { + this.test (); + } + + public void tear_down (void* fixture) { + this.test_case.tear_down (); + } + } +}
\ No newline at end of file diff --git a/plugins/signal-protocol/vapi/signal-protocol-native.vapi b/plugins/signal-protocol/vapi/signal-protocol-native.vapi new file mode 100644 index 00000000..b9ba6a31 --- /dev/null +++ b/plugins/signal-protocol/vapi/signal-protocol-native.vapi @@ -0,0 +1,274 @@ +namespace Signal { + [Compact] + [CCode (cname = "signal_context", cprefix="signal_context_", free_function="signal_context_destroy", cheader_filename = "signal_protocol.h")] + public class NativeContext { + public static int create(out NativeContext context, void* user_data); + public int set_crypto_provider(NativeCryptoProvider crypto_provider); + public int set_locking_functions(LockingFunc lock, LockingFunc unlock); + public int set_log_function(LogFunc log); + } + [CCode (has_target = false)] + public delegate void LockingFunc(void* user_data); + [CCode (has_target = false)] + public delegate void LogFunc(LogLevel level, string message, void* user_data); + + [Compact] + [CCode (cname = "signal_crypto_provider", cheader_filename = "signal_protocol.h")] + public struct NativeCryptoProvider { + public RandomFunc random_func; + public HmacSha256Init hmac_sha256_init_func; + public HmacSha256Update hmac_sha256_update_func; + public HmacSha256Final hmac_sha256_final_func; + public HmacSha256Cleanup hmac_sha256_cleanup_func; + public Sha512DigestInit sha512_digest_init_func; + public Sha512DigestUpdate sha512_digest_update_func; + public Sha512DigestFinal sha512_digest_final_func; + public Sha512DigestCleanup sha512_digest_cleanup_func; + public CryptFunc encrypt_func; + public CryptFunc decrypt_func; + public void* user_data; + } + [CCode (has_target = false)] + public delegate int RandomFunc(uint8[] data, void* user_data); + [CCode (has_target = false)] + public delegate int HmacSha256Init(out void* hmac_context, uint8[] key, void* user_data); + [CCode (has_target = false)] + public delegate int HmacSha256Update(void* hmac_context, uint8[] data, void* user_data); + [CCode (has_target = false)] + public delegate int HmacSha256Final(void* hmac_context, out Buffer buffer, void* user_data); + [CCode (has_target = false)] + public delegate int HmacSha256Cleanup(void* hmac_context, void* user_data); + [CCode (has_target = false)] + public delegate int Sha512DigestInit(out void* digest_context, void* user_data); + [CCode (has_target = false)] + public delegate int Sha512DigestUpdate(void* digest_context, uint8[] data, void* user_data); + [CCode (has_target = false)] + public delegate int Sha512DigestFinal(void* digest_context, out Buffer buffer, void* user_data); + [CCode (has_target = false)] + public delegate int Sha512DigestCleanup(void* digest_context, void* user_data); + [CCode (has_target = false)] + public delegate int CryptFunc(out Buffer output, Cipher cipher, uint8[] key, uint8[] iv, uint8[] content, void* user_data); + + [Compact] + [CCode (cname = "signal_protocol_session_store", cheader_filename = "signal_protocol.h")] + public struct NativeSessionStore { + public LoadSessionFunc load_session_func; + public GetSubDeviceSessionsFunc get_sub_device_sessions_func; + public StoreSessionFunc store_session_func; + public ContainsSessionFunc contains_session_func; + public DeleteSessionFunc delete_session_func; + public DeleteAllSessionsFunc delete_all_sessions_func; + public DestroyFunc destroy_func; + public void* user_data; + } + [CCode (has_target = false)] + public delegate int LoadSessionFunc(out Buffer buffer, Address address, void* user_data); + [CCode (has_target = false)] + public delegate int GetSubDeviceSessionsFunc(out IntList sessions, char[] name, void* user_data); + [CCode (has_target = false)] + public delegate int StoreSessionFunc(Address address, uint8[] record, void* user_data); + [CCode (has_target = false)] + public delegate int ContainsSessionFunc(Address address, void* user_data); + [CCode (has_target = false)] + public delegate int DeleteSessionFunc(Address address, void* user_data); + [CCode (has_target = false)] + public delegate int DeleteAllSessionsFunc(char[] name, void* user_data); + + [Compact] + [CCode (cname = "signal_protocol_identity_key_store", cheader_filename = "signal_protocol.h")] + public struct NativeIdentityKeyStore { + GetIdentityKeyPairFunc get_identity_key_pair; + GetLocalRegistrationIdFunc get_local_registration_id; + SaveIdentityFunc save_identity; + IsTrustedIdentityFunc is_trusted_identity; + DestroyFunc destroy_func; + void* user_data; + } + [CCode (has_target = false)] + public delegate int GetIdentityKeyPairFunc(out Buffer public_data, out Buffer private_data, void* user_data); + [CCode (has_target = false)] + public delegate int GetLocalRegistrationIdFunc(void* user_data, out uint32 registration_id); + [CCode (has_target = false)] + public delegate int SaveIdentityFunc(Address address, uint8[] key, void* user_data); + [CCode (has_target = false)] + public delegate int IsTrustedIdentityFunc(Address address, uint8[] key, void* user_data); + + [Compact] + [CCode (cname = "signal_protocol_pre_key_store", cheader_filename = "signal_protocol.h")] + public struct NativePreKeyStore { + LoadPreKeyFunc load_pre_key; + StorePreKeyFunc store_pre_key; + ContainsPreKeyFunc contains_pre_key; + RemovePreKeyFunc remove_pre_key; + DestroyFunc destroy_func; + void* user_data; + } + [CCode (has_target = false)] + public delegate int LoadPreKeyFunc(out Buffer record, uint32 pre_key_id, void* user_data); + [CCode (has_target = false)] + public delegate int StorePreKeyFunc(uint32 pre_key_id, uint8[] record, void* user_data); + [CCode (has_target = false)] + public delegate int ContainsPreKeyFunc(uint32 pre_key_id, void* user_data); + [CCode (has_target = false)] + public delegate int RemovePreKeyFunc(uint32 pre_key_id, void* user_data); + + + [Compact] + [CCode (cname = "signal_protocol_signed_pre_key_store", cheader_filename = "signal_protocol.h")] + public struct NativeSignedPreKeyStore { + LoadPreKeyFunc load_signed_pre_key; + StorePreKeyFunc store_signed_pre_key; + ContainsPreKeyFunc contains_signed_pre_key; + RemovePreKeyFunc remove_signed_pre_key; + DestroyFunc destroy_func; + void* user_data; + } + + + [Compact] + [CCode (cname = "signal_protocol_sender_key_store")] + public struct NativeSenderKeyStore { + StoreSenderKeyFunc store_sender_key; + LoadSenderKeyFunc load_sender_key; + DestroyFunc destroy_func; + void* user_data; + } + [CCode (has_target = false)] + public delegate int StoreSenderKeyFunc(SenderKeyName sender_key_name, uint8[] record, void* user_data); + [CCode (has_target = false)] + public delegate int LoadSenderKeyFunc(out Buffer record, SenderKeyName sender_key_name, void* user_data); + + [CCode (has_target = false)] + public delegate int DestroyFunc(void* user_data); + + [Compact] + [CCode (cname = "signal_protocol_store_context", cprefix = "signal_protocol_store_context_", free_function="signal_protocol_store_context_destroy", cheader_filename = "signal_protocol.h")] + public class NativeStoreContext { + public static int create(out NativeStoreContext context, NativeContext global_context); + public int set_session_store(NativeSessionStore store); + public int set_pre_key_store(NativePreKeyStore store); + public int set_signed_pre_key_store(NativeSignedPreKeyStore store); + public int set_identity_key_store(NativeIdentityKeyStore store); + public int set_sender_key_store(NativeSenderKeyStore store); + } + + + [CCode (cheader_filename = "signal_protocol.h")] + namespace Protocol { + + /** + * Interface to the pre-key store. + * These functions will use the callbacks in the provided + * signal_protocol_store_context instance and operate in terms of higher level + * library data structures. + */ + [CCode (cprefix = "signal_protocol_pre_key_")] + namespace PreKey { + public int load_key(NativeStoreContext context, out PreKeyRecord pre_key, uint32 pre_key_id); + public int store_key(NativeStoreContext context, PreKeyRecord pre_key); + public int contains_key(NativeStoreContext context, uint32 pre_key_id); + public int remove_key(NativeStoreContext context, uint32 pre_key_id); + } + + [CCode (cprefix = "signal_protocol_signed_pre_key_")] + namespace SignedPreKey { + public int load_key(NativeStoreContext context, out SignedPreKeyRecord pre_key, uint32 pre_key_id); + public int store_key(NativeStoreContext context, SignedPreKeyRecord pre_key); + public int contains_key(NativeStoreContext context, uint32 pre_key_id); + public int remove_key(NativeStoreContext context, uint32 pre_key_id); + } + + /** + * Interface to the session store. + * These functions will use the callbacks in the provided + * signal_protocol_store_context instance and operate in terms of higher level + * library data structures. + */ + [CCode (cprefix = "signal_protocol_session_")] + namespace Session { + public int load_session(NativeStoreContext context, out SessionRecord record, Address address); + public int get_sub_device_sessions(NativeStoreContext context, out IntList sessions, char[] name); + public int store_session(NativeStoreContext context, Address address, SessionRecord record); + public int contains_session(NativeStoreContext context, Address address); + public int delete_session(NativeStoreContext context, Address address); + public int delete_all_sessions(NativeStoreContext context, char[] name); + } + + namespace Identity { + public int get_key_pair(NativeStoreContext store_context, out IdentityKeyPair key_pair); + public int get_local_registration_id(NativeStoreContext store_context, out uint32 registration_id); + public int save_identity(NativeStoreContext store_context, Address address, ECPublicKey identity_key); + public int is_trusted_identity(NativeStoreContext store_context, Address address, ECPublicKey identity_key); + } + + [CCode (cheader_filename = "key_helper.h", cprefix = "signal_protocol_key_helper_")] + namespace KeyHelper { + [Compact] + [CCode (cname = "signal_protocol_key_helper_pre_key_list_node", cprefix = "signal_protocol_key_helper_key_list_", free_function="signal_protocol_key_helper_key_list_free")] + public class PreKeyListNode { + public PreKeyRecord element(); + public PreKeyListNode next(); + } + + public int generate_identity_key_pair(out IdentityKeyPair key_pair, NativeContext global_context); + public int generate_registration_id(out int32 registration_id, int extended_range, NativeContext global_context); + public int get_random_sequence(out int value, int max, NativeContext global_context); + public int generate_pre_keys(out PreKeyListNode head, uint start, uint count, NativeContext global_context); + public int generate_last_resort_pre_key(out PreKeyRecord pre_key, NativeContext global_context); + public int generate_signed_pre_key(out SignedPreKeyRecord signed_pre_key, IdentityKeyPair identity_key_pair, uint32 signed_pre_key_id, uint64 timestamp, NativeContext global_context); + public int generate_sender_signing_key(out ECKeyPair key_pair, NativeContext global_context); + public int generate_sender_key(out Buffer key_buffer, NativeContext global_context); + public int generate_sender_key_id(out int32 key_id, NativeContext global_context); + } + } + + [CCode (cheader_filename = "curve.h")] + namespace Curve { + [CCode (cname = "curve_calculate_agreement")] + public int calculate_agreement([CCode (array_length = false)] out uint8[] shared_key_data, ECPublicKey public_key, ECPrivateKey private_key); + [CCode (cname = "curve_calculate_signature")] + public int calculate_signature(NativeContext context, out Buffer signature, ECPrivateKey signing_key, uint8[] message); + [CCode (cname = "curve_verify_signature")] + public int verify_signature(ECPublicKey signing_key, uint8[] message, uint8[] signature); + } + + [CCode (cname = "session_builder_create", cheader_filename = "session_builder.h")] + public static int session_builder_create(out SessionBuilder builder, NativeStoreContext store, Address remote_address, NativeContext global_context); + [CCode (cname = "session_cipher_create", cheader_filename = "session_cipher.h")] + public static int session_cipher_create(out SessionCipher cipher, NativeStoreContext store, Address remote_address, NativeContext global_context); + [CCode (cname = "pre_key_signal_message_deserialize", cheader_filename = "protocol.h")] + public static int pre_key_signal_message_deserialize(out PreKeySignalMessage message, uint8[] data, NativeContext global_context); + [CCode (cname = "pre_key_signal_message_copy", cheader_filename = "protocol.h")] + public static int pre_key_signal_message_copy(out PreKeySignalMessage message, PreKeySignalMessage other_message, NativeContext global_context); + [CCode (cname = "signal_message_create", cheader_filename = "protocol.h")] + public static int signal_message_create(out SignalMessage message, uint8 message_version, uint8[] mac_key, ECPublicKey sender_ratchet_key, uint32 counter, uint32 previous_counter, uint8[] ciphertext, ECPublicKey sender_identity_key, ECPublicKey receiver_identity_key, NativeContext global_context); + [CCode (cname = "signal_message_deserialize", cheader_filename = "protocol.h")] + public static int signal_message_deserialize(out SignalMessage message, uint8[] data, NativeContext global_context); + [CCode (cname = "signal_message_copy", cheader_filename = "protocol.h")] + public static int signal_message_copy(out SignalMessage message, SignalMessage other_message, NativeContext global_context); + [CCode (cname = "curve_generate_key_pair", cheader_filename = "curve.h")] + public static int curve_generate_key_pair(NativeContext context, out ECKeyPair key_pair); + [CCode (cname = "curve_decode_private_point", cheader_filename = "curve.h")] + public static int curve_decode_private_point(out ECPrivateKey public_key, uint8[] key, NativeContext global_context); + [CCode (cname = "curve_decode_point", cheader_filename = "curve.h")] + public static int curve_decode_point(out ECPublicKey public_key, uint8[] key, NativeContext global_context); + [CCode (cname = "curve_generate_private_key", cheader_filename = "curve.h")] + public static int curve_generate_private_key(NativeContext context, out ECPrivateKey private_key); + [CCode (cname = "ratchet_identity_key_pair_deserialize", cheader_filename = "ratchet.h")] + public static int ratchet_identity_key_pair_deserialize(out IdentityKeyPair key_pair, uint8[] data, NativeContext global_context); + [CCode (cname = "session_signed_pre_key_deserialize", cheader_filename = "signed_pre_key.h")] + public static int session_signed_pre_key_deserialize(out SignedPreKeyRecord pre_key, uint8[] data, NativeContext global_context); + + [Compact] + [CCode (cname = "hkdf_context", cprefix = "hkdf_", free_function = "hkdf_destroy", cheader_filename = "hkdf.h")] + public class NativeHkdfContext { + public static int create(out NativeHkdfContext context, int message_version, NativeContext global_context); + public int compare(NativeHkdfContext other); + public ssize_t derive_secrets([CCode (array_length = false)] out uint8[] output, uint8[] input_key_material, uint8[] salt, uint8[] info, size_t output_len); + } + + [CCode (cname = "setup_signal_vala_crypto_provider", cheader_filename = "signal_helper.h")] + public static void setup_crypto_provider(NativeContext context); + [CCode (cname = "signal_crypto_random", cheader_filename = "signal_protocol_internal.h")] + public static int native_random(NativeContext context, uint8[] data); +}
\ No newline at end of file diff --git a/plugins/signal-protocol/vapi/signal-protocol-public.vapi b/plugins/signal-protocol/vapi/signal-protocol-public.vapi new file mode 100644 index 00000000..d0208c6c --- /dev/null +++ b/plugins/signal-protocol/vapi/signal-protocol-public.vapi @@ -0,0 +1,394 @@ +namespace Signal { + + [CCode (cname = "int", cprefix = "SG_ERR_", cheader_filename = "signal_protocol.h", has_type_id = false)] + public enum ErrorCode { + [CCode (cname = "SG_SUCCESS")] + SUCCESS, + NOMEM, + INVAL, + UNKNOWN, + DUPLICATE_MESSAGE, + INVALID_KEY, + INVALID_KEY_ID, + INVALID_MAC, + INVALID_MESSAGE, + INVALID_VERSION, + LEGACY_MESSAGE, + NO_SESSION, + STALE_KEY_EXCHANGE, + UNTRUSTED_IDENTITY, + VRF_SIG_VERIF_FAILED, + INVALID_PROTO_BUF, + FP_VERSION_MISMATCH, + FP_IDENT_MISMATCH; + } + + [CCode (cname = "SG_ERR_MINIMUM", cheader_filename = "signal_protocol.h")] + public const int MIN_ERROR_CODE; + + [CCode (cname = "int", cprefix = "SG_LOG_", cheader_filename = "signal_protocol.h", has_type_id = false)] + public enum LogLevel { + ERROR, + WARNING, + NOTICE, + INFO, + DEBUG + } + + [CCode (cname = "signal_throw_gerror_by_code_", cheader_filename = "signal_protocol.h")] + private int throw_by_code(int code, string? message = null) throws GLib.Error { + if (code < 0 && code > MIN_ERROR_CODE) { + throw new GLib.Error(-1, code, @"$(message ?? "Signal error"): $((ErrorCode)code)"); + } + return code; + } + + [CCode (cname = "int", cprefix = "SG_CIPHER_", cheader_filename = "signal_protocol.h", has_type_id = false)] + public enum Cipher { + AES_CTR_NOPADDING, + AES_CBC_PKCS5, + AES_GCM_NOPADDING + } + + [Compact] + [CCode (cname = "signal_type_base", ref_function="signal_type_ref_vapi", unref_function="signal_type_unref_vapi", cheader_filename="signal_protocol_types.h,signal_helper.h")] + public class TypeBase { + [CCode (cname = "signal_type_ref_vapi")] + public TypeBase ref(); + [CCode (cname = "signal_type_unref_vapi")] + public TypeBase unref(void* what); + } + + [Compact] + [CCode (cname = "signal_buffer", cheader_filename = "signal_protocol_types.h", free_function="signal_buffer_free")] + public class Buffer { + [CCode (cname = "signal_buffer_alloc")] + public Buffer(size_t len); + [CCode (cname = "signal_buffer_create")] + public Buffer.from(uint8[] data); + + public Buffer copy(); + public Buffer append(uint8[] data); + public int compare(Buffer other); + + public uint8 get(int i) { return data[i]; } + public void set(int i, uint8 val) { data[i] = val; } + + public uint8[] data { get { int x = (int)len(); unowned uint8[] res = _data(); res.length = x; return res; } } + + [CCode (array_length = false, cname = "signal_buffer_data")] + private unowned uint8[] _data(); + private size_t len(); + } + + [Compact] + [CCode (cname = "signal_int_list", cheader_filename = "signal_protocol_types.h", free_function="signal_int_list_free")] + public class IntList { + [CCode (cname = "signal_int_list_alloc")] + public IntList(); + [CCode (cname = "signal_int_list_push_back")] + public int add(int value); + public uint size { [CCode (cname = "signal_int_list_size")] get; } + [CCode (cname = "signal_int_list_at")] + public int get(uint index); + } + + [Compact] + [CCode (cname = "session_builder", cprefix = "session_builder_", free_function="session_builder_free", cheader_filename = "session_builder.h")] + public class SessionBuilder { + [CCode (cname = "session_builder_process_pre_key_bundle")] + private int process_pre_key_bundle_(PreKeyBundle pre_key_bundle); + [CCode (cname = "session_builder_process_pre_key_bundle_")] + public void process_pre_key_bundle(PreKeyBundle pre_key_bundle) throws GLib.Error { + throw_by_code(process_pre_key_bundle_(pre_key_bundle)); + } + } + + [Compact] + [CCode (cname = "session_pre_key_bundle", cprefix = "session_pre_key_bundle_", cheader_filename = "session_pre_key.h")] + public class PreKeyBundle : TypeBase { + public static int create(out PreKeyBundle bundle, uint32 registration_id, int device_id, uint32 pre_key_id, ECPublicKey pre_key_public, + uint32 signed_pre_key_id, ECPublicKey signed_pre_key_public, uint8[] signed_pre_key_signature, ECPublicKey identity_key); + public uint32 registration_id { get; } + public int device_id { get; } + public uint32 pre_key_id { get; } + public ECPublicKey pre_key { owned get; } + public uint32 signed_pre_key_id { get; } + public ECPublicKey signed_pre_key { owned get; } + public Buffer signed_pre_key_signature { owned get; } + public ECPublicKey identity_key { owned get; } + } + + [Compact] + [CCode (cname = "session_pre_key", cprefix = "session_pre_key_", cheader_filename = "session_pre_key.h,signal_helper.h")] + public class PreKeyRecord : TypeBase { + public PreKeyRecord(uint32 id, ECKeyPair key_pair) throws GLib.Error { + int err; + this.new(id, key_pair, out err); + throw_by_code(err); + } + [CCode (cheader_filename = "signal_helper.h")] + private PreKeyRecord.new(uint32 id, ECKeyPair key_pair, out int err); + private static int create(out PreKeyRecord pre_key, uint32 id, ECKeyPair key_pair); + //public static int deserialize(out PreKeyRecord pre_key, uint8[] data, NativeContext global_context); + [CCode (instance_pos = 2)] + public int serialze(out Buffer buffer); + public uint32 id { get; } + public ECKeyPair key_pair { get; } + } + + [Compact] + [CCode (cname = "session_record", cprefix = "session_record_", cheader_filename = "signal_protocol_types.h")] + public class SessionRecord : TypeBase { + public SessionState state { get; } + } + + [Compact] + [CCode (cname = "session_state", cprefix = "session_state_", cheader_filename = "session_state.h")] + public class SessionState : TypeBase { + //public static int create(out SessionState state, NativeContext context); + //public static int deserialize(out SessionState state, uint8[] data, NativeContext context); + //public static int copy(out SessionState state, SessionState other_state, NativeContext context); + [CCode (instance_pos = 2)] + public int serialze(out Buffer buffer); + + public uint32 session_version { get; set; } + public ECPublicKey local_identity_key { get; set; } + public ECPublicKey remote_identity_key { get; set; } + //public Ratchet.RootKey root_key { get; set; } + public uint32 previous_counter { get; set; } + public ECPublicKey sender_ratchet_key { get; } + public ECKeyPair sender_ratchet_key_pair { get; } + //public Ratchet.ChainKey sender_chain_key { get; set; } + public uint32 remote_registration_id { get; set; } + public uint32 local_registration_id { get; set; } + public int needs_refresh { get; set; } + public ECPublicKey alice_base_key { get; set; } + } + + [Compact] + [CCode (cname = "session_signed_pre_key", cprefix = "session_signed_pre_key_", cheader_filename = "session_pre_key.h")] + public class SignedPreKeyRecord : TypeBase { + public SignedPreKeyRecord(uint32 id, uint64 timestamp, ECKeyPair key_pair, uint8[] signature) throws GLib.Error { + int err; + this.new(id, timestamp, key_pair, signature, out err); + throw_by_code(err); + } + [CCode (cheader_filename = "signal_helper.h")] + private SignedPreKeyRecord.new(uint32 id, uint64 timestamp, ECKeyPair key_pair, uint8[] signature, out int err); + private static int create(out SignedPreKeyRecord pre_key, uint32 id, uint64 timestamp, ECKeyPair key_pair, uint8[] signature); + [CCode (instance_pos = 2)] + public int serialze(out Buffer buffer); + + public uint32 id { get; } + public uint64 timestamp { get; } + public ECKeyPair key_pair { get; } + public uint8[] signature { [CCode (cname = "session_signed_pre_key_get_signature_")] get { int x = (int)get_signature_len(); unowned uint8[] res = get_signature(); res.length = x; return res; } } + + [CCode (array_length = false, cname = "session_signed_pre_key_get_signature")] + private unowned uint8[] get_signature(); + private size_t get_signature_len(); + } + + /** + * Address of an Signal Protocol message recipient + */ + [Compact] + [CCode (cname = "signal_protocol_address", cprefix = "signal_protocol_address_", cheader_filename = "signal_protocol.h,signal_helper.h")] + public class Address { + public Address(); + public int32 device_id; + + public string name { owned get; set; } + } + + /** + * A representation of a (group + sender + device) tuple + */ + [Compact] + [CCode (cname = "signal_protocol_sender_key_name")] + public class SenderKeyName { + [CCode (cname = "group_id", array_length_cname="group_id_len")] + private char* group_id_; + private size_t group_id_len; + public Address sender; + } + + [Compact] + [CCode (cname = "ec_public_key", cprefix = "ec_public_key_", cheader_filename = "curve.h,signal_helper.h")] + public class ECPublicKey : TypeBase { + [CCode (cname = "curve_generate_public_key")] + public static int generate(out ECPublicKey public_key, ECPrivateKey private_key); + [CCode (instance_pos = 1, cname = "ec_public_key_serialize")] + private int serialize_([CCode (pos = 0)] out Buffer buffer); + [CCode (cname = "ec_public_key_serialize_")] + public uint8[] serialize() throws GLib.Error { + Buffer buffer; + throw_by_code(serialize_(out buffer)); + return buffer.data; + } + public int compare(ECPublicKey other); + public int memcmp(ECPublicKey other); + } + + [Compact] + [CCode (cname = "ec_private_key", cprefix = "ec_private_key_", cheader_filename = "curve.h,signal_helper.h")] + public class ECPrivateKey : TypeBase { + [CCode (instance_pos = 1, cname = "ec_private_key_serialize")] + private int serialize_([CCode (pos = 0)] out Buffer buffer); + [CCode (cname = "ec_private_key_serialize_")] + public uint8[] serialize() throws GLib.Error { + Buffer buffer; + throw_by_code(serialize_(out buffer)); + return buffer.data; + } + public int compare(ECPublicKey other); + } + + [Compact] + [CCode (cname = "ec_key_pair", cprefix="ec_key_pair_", cheader_filename = "curve.h,signal_helper.h")] + public class ECKeyPair : TypeBase { + public static int create(out ECKeyPair key_pair, ECPublicKey public_key, ECPrivateKey private_key); + public ECPublicKey public { get; } + public ECPrivateKey private { get; } + } + + [CCode (cname = "ratchet_message_keys", cheader_filename = "ratchet.h")] + public class MessageKeys { + } + + [Compact] + [CCode (cname = "ratchet_identity_key_pair", cprefix = "ratchet_identity_key_pair_", cheader_filename = "ratchet.h,signal_helper.h")] + public class IdentityKeyPair : TypeBase { + public static int create(out IdentityKeyPair key_pair, ECPublicKey public_key, ECPrivateKey private_key); + public int serialze(out Buffer buffer); + public ECPublicKey public { get; } + public ECPrivateKey private { get; } + } + + [Compact] + [CCode (cname = "ec_public_key_list")] + public class PublicKeyList {} + + /** + * The main entry point for Signal Protocol encrypt/decrypt operations. + * + * Once a session has been established with session_builder, + * this class can be used for all encrypt/decrypt operations within + * that session. + */ + [Compact] + [CCode (cname = "session_cipher", cprefix = "session_cipher_", cheader_filename = "session_cipher.h", free_function = "session_cipher_free")] + public class SessionCipher { + public void* user_data { get; set; } + public DecryptionCallback decryption_callback { set; } + [CCode (cname = "session_cipher_encrypt")] + private int encrypt_(uint8[] padded_message, out CiphertextMessage encrypted_message); + [CCode (cname = "session_cipher_encrypt_")] + public CiphertextMessage encrypt(uint8[] padded_message) throws GLib.Error { + CiphertextMessage res; + throw_by_code(encrypt_(padded_message, out res)); + return res; + } + [CCode (cname = "session_cipher_decrypt_pre_key_signal_message")] + private int decrypt_pre_key_signal_message_(PreKeySignalMessage ciphertext, void* decrypt_context, out Buffer plaintext); + [CCode (cname = "session_cipher_decrypt_pre_key_signal_message_")] + public uint8[] decrypt_pre_key_signal_message(PreKeySignalMessage ciphertext, void* decrypt_context = null) throws GLib.Error { + Buffer res; + throw_by_code(decrypt_pre_key_signal_message_(ciphertext, decrypt_context, out res)); + return res.data; + } + [CCode (cname = "session_cipher_decrypt_signal_message")] + private int decrypt_signal_message_(SignalMessage ciphertext, void* decrypt_context, out Buffer plaintext); + [CCode (cname = "session_cipher_decrypt_signal_message_")] + public uint8[] decrypt_signal_message(SignalMessage ciphertext, void* decrypt_context = null) throws GLib.Error { + Buffer res; + throw_by_code(decrypt_signal_message_(ciphertext, decrypt_context, out res)); + return res.data; + } + public int get_remote_registration_id(out uint32 remote_id); + public int get_session_version(uint32 version); + + [CCode (has_target = false)] + public delegate int DecryptionCallback(SessionCipher cipher, Buffer plaintext, void* decrypt_context); + } + + [CCode (cname = "int", cheader_filename = "protocol.h", has_type_id = false)] + public enum CiphertextType { + [CCode (cname = "CIPHERTEXT_SIGNAL_TYPE")] + SIGNAL, + [CCode (cname = "CIPHERTEXT_PREKEY_TYPE")] + PREKEY, + [CCode (cname = "CIPHERTEXT_SENDERKEY_TYPE")] + SENDERKEY, + [CCode (cname = "CIPHERTEXT_SENDERKEY_DISTRIBUTION_TYPE")] + SENDERKEY_DISTRIBUTION + } + + [Compact] + [CCode (cname = "ciphertext_message", cprefix = "ciphertext_message_", cheader_filename = "protocol.h,signal_helper.h")] + public abstract class CiphertextMessage : TypeBase { + public CiphertextType type { get; } + [CCode (cname = "ciphertext_message_get_serialized")] + private unowned Buffer get_serialized_(); + public uint8[] serialized { [CCode (cname = "ciphertext_message_get_serialized_")] get { + return get_serialized_().data; + }} + } + [Compact] + [CCode (cname = "signal_message", cprefix = "signal_message_", cheader_filename = "protocol.h,signal_helper.h")] + public class SignalMessage : CiphertextMessage { + public ECPublicKey sender_ratchet_key { get; } + public uint8 message_version { get; } + public uint32 counter { get; } + public Buffer body { get; } + //public int verify_mac(uint8 message_version, ECPublicKey sender_identity_key, ECPublicKey receiver_identity_key, uint8[] mac, NativeContext global_context); + public static int is_legacy(uint8[] data); + } + [Compact] + [CCode (cname = "pre_key_signal_message", cprefix = "pre_key_signal_message_", cheader_filename = "protocol.h,signal_helper.h")] + public class PreKeySignalMessage : CiphertextMessage { + public uint8 message_version { get; } + public ECPublicKey identity_key { get; } + public uint32 registration_id { get; } + public uint32 pre_key_id { get; } + public uint32 signed_pre_key_id { get; } + public ECPublicKey base_key { get; } + public SignalMessage signal_message { get; } + } + [Compact] + [CCode (cname = "sender_key_message", cprefix = "sender_key_message_", cheader_filename = "protocol.h,signal_helper.h")] + public class SenderKeyMessage : CiphertextMessage { + public uint32 key_id { get; } + public uint32 iteration { get; } + public Buffer ciphertext { get; } + } + [Compact] + [CCode (cname = "sender_key_distribution_message", cprefix = "sender_key_distribution_message_", cheader_filename = "protocol.h,signal_helper.h")] + public class SenderKeyDistributionMessage : CiphertextMessage { + public uint32 id { get; } + public uint32 iteration { get; } + public Buffer chain_key { get; } + public ECPublicKey signature_key { get; } + } + + [CCode (cname = "signal_vala_encrypt", cheader_filename = "signal_helper.h")] + private static int aes_encrypt_(out Buffer output, int cipher, uint8[] key, uint8[] iv, uint8[] plaintext, void *user_data); + + [CCode (cname = "signal_vala_encrypt_")] + public uint8[] aes_encrypt(int cipher, uint8[] key, uint8[] iv, uint8[] plaintext) throws GLib.Error { + Buffer buf; + throw_by_code(aes_encrypt_(out buf, cipher, key, iv, plaintext, null)); + return buf.data; + } + + [CCode (cname = "signal_vala_decrypt", cheader_filename = "signal_helper.h")] + private static int aes_decrypt_(out Buffer output, int cipher, uint8[] key, uint8[] iv, uint8[] ciphertext, void *user_data); + + [CCode (cname = "signal_vala_decrypt_")] + public uint8[] aes_decrypt(int cipher, uint8[] key, uint8[] iv, uint8[] ciphertext) throws GLib.Error { + Buffer buf; + throw_by_code(aes_decrypt_(out buf, cipher, key, iv, ciphertext, null)); + return buf.data; + } +}
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