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-rw-r--r--plugins/omemo/src/file_transfer/file_decryptor.vala10
-rw-r--r--plugins/omemo/src/file_transfer/file_encryptor.vala6
-rw-r--r--plugins/omemo/src/jingle/jet_omemo.vala12
-rw-r--r--plugins/omemo/src/logic/trust_manager.vala6
-rw-r--r--plugins/omemo/src/protocol/stream_module.vala2
-rw-r--r--plugins/signal-protocol/src/signal_helper.c4
6 files changed, 19 insertions, 21 deletions
diff --git a/plugins/omemo/src/file_transfer/file_decryptor.vala b/plugins/omemo/src/file_transfer/file_decryptor.vala
index 7aec41d5..fedb9397 100644
--- a/plugins/omemo/src/file_transfer/file_decryptor.vala
+++ b/plugins/omemo/src/file_transfer/file_decryptor.vala
@@ -52,14 +52,8 @@ public class OmemoFileDecryptor : FileDecryptor, Object {
MatchInfo match_info;
this.url_regex.match(omemo_http_receive_data.original_url, 0, out match_info);
uint8[] iv_and_key = hex_to_bin(match_info.fetch(2).up());
- uint8[] iv, key;
- if (iv_and_key.length == 44) {
- iv = iv_and_key[0:12];
- key = iv_and_key[12:44];
- } else {
- iv = iv_and_key[0:16];
- key = iv_and_key[16:48];
- }
+ uint8[] iv = iv_and_key[0:iv_and_key.length-16];
+ uint8[] key = iv_and_key[iv_and_key.length-16:iv_and_key.length];
file_transfer.encryption = Encryption.OMEMO;
debug("Decrypting file %s from %s", file_transfer.file_name, file_transfer.server_file_name);
diff --git a/plugins/omemo/src/file_transfer/file_encryptor.vala b/plugins/omemo/src/file_transfer/file_encryptor.vala
index 31c3ad6c..7e79abdc 100644
--- a/plugins/omemo/src/file_transfer/file_encryptor.vala
+++ b/plugins/omemo/src/file_transfer/file_encryptor.vala
@@ -20,13 +20,15 @@ public class OmemoFileEncryptor : Dino.FileEncryptor, Object {
}
public FileMeta encrypt_file(Conversation conversation, FileTransfer file_transfer) throws FileSendError {
+ const uint KEY_SIZE = 32;
+ const uint IV_SIZE = 12;
var omemo_http_file_meta = new OmemoHttpFileMeta();
try {
//Create a key and use it to encrypt the file
- uint8[] iv = new uint8[16];
+ uint8[] iv = new uint8[IV_SIZE];
Plugin.get_context().randomize(iv);
- uint8[] key = new uint8[32];
+ uint8[] key = new uint8[KEY_SIZE];
Plugin.get_context().randomize(key);
SymmetricCipher cipher = new SymmetricCipher("AES-GCM");
diff --git a/plugins/omemo/src/jingle/jet_omemo.vala b/plugins/omemo/src/jingle/jet_omemo.vala
index b3343855..14307be2 100644
--- a/plugins/omemo/src/jingle/jet_omemo.vala
+++ b/plugins/omemo/src/jingle/jet_omemo.vala
@@ -12,6 +12,8 @@ private const string AES_128_GCM_URI = "urn:xmpp:ciphers:aes-128-gcm-nopadding";
public class Module : XmppStreamModule, Jet.EnvelopEncoding {
public static Xmpp.ModuleIdentity<Module> IDENTITY = new Xmpp.ModuleIdentity<Module>(NS_URI, "0396_jet_omemo");
private Omemo.Plugin plugin;
+ const uint KEY_SIZE = 16;
+ const uint IV_SIZE = 12;
public Module(Omemo.Plugin plugin) {
this.plugin = plugin;
@@ -21,7 +23,7 @@ public class Module : XmppStreamModule, Jet.EnvelopEncoding {
if (stream.get_module(Jet.Module.IDENTITY) != null) {
stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
stream.get_module(Jet.Module.IDENTITY).register_envelop_encoding(this);
- stream.get_module(Jet.Module.IDENTITY).register_cipher(new AesGcmCipher(16, AES_128_GCM_URI));
+ stream.get_module(Jet.Module.IDENTITY).register_cipher(new AesGcmCipher(KEY_SIZE, IV_SIZE, AES_128_GCM_URI));
}
}
@@ -114,17 +116,19 @@ public class Module : XmppStreamModule, Jet.EnvelopEncoding {
}
public class AesGcmCipher : Jet.Cipher, Object {
- private int key_size;
+ private uint key_size;
+ private uint default_iv_size;
private string uri;
- public AesGcmCipher(int key_size, string uri) {
+ public AesGcmCipher(uint key_size, uint default_iv_size, string uri) {
this.key_size = key_size;
+ this.default_iv_size = default_iv_size;
this.uri = uri;
}
public string get_cipher_uri() {
return uri;
}
public Jet.TransportSecret generate_random_secret() {
- uint8[] iv = new uint8[16];
+ uint8[] iv = new uint8[default_iv_size];
Omemo.Plugin.get_context().randomize(iv);
uint8[] key = new uint8[key_size];
Omemo.Plugin.get_context().randomize(key);
diff --git a/plugins/omemo/src/logic/trust_manager.vala b/plugins/omemo/src/logic/trust_manager.vala
index a1d85199..1e61b201 100644
--- a/plugins/omemo/src/logic/trust_manager.vala
+++ b/plugins/omemo/src/logic/trust_manager.vala
@@ -145,6 +145,8 @@ public class TrustManager {
}
public EncryptState encrypt(MessageStanza message, Jid self_jid, Gee.List<Jid> recipients, XmppStream stream, Account account) {
+ const uint KEY_SIZE = 16;
+ const uint IV_SIZE = 12;
EncryptState status = new EncryptState();
if (!Plugin.ensure_context()) return status;
if (message.to == null) return status;
@@ -153,9 +155,9 @@ public class TrustManager {
try {
//Create a key and use it to encrypt the message
- uint8[] key = new uint8[16];
+ uint8[] key = new uint8[KEY_SIZE];
Plugin.get_context().randomize(key);
- uint8[] iv = new uint8[16];
+ uint8[] iv = new uint8[IV_SIZE];
Plugin.get_context().randomize(iv);
uint8[] aes_encrypt_result = aes_encrypt(Cipher.AES_GCM_NOPADDING, key, iv, message.body.data);
diff --git a/plugins/omemo/src/protocol/stream_module.vala b/plugins/omemo/src/protocol/stream_module.vala
index ba6e409e..e4a2733c 100644
--- a/plugins/omemo/src/protocol/stream_module.vala
+++ b/plugins/omemo/src/protocol/stream_module.vala
@@ -5,7 +5,7 @@ using Signal;
namespace Dino.Plugins.Omemo {
-private const string NS_URI = "eu.siacs.conversations.axolotl";
+internal const string NS_URI = "eu.siacs.conversations.axolotl";
private const string NODE_DEVICELIST = NS_URI + ".devicelist";
private const string NODE_BUNDLES = NS_URI + ".bundles";
private const string NODE_VERIFICATION = NS_URI + ".verification";
diff --git a/plugins/signal-protocol/src/signal_helper.c b/plugins/signal-protocol/src/signal_helper.c
index 74019410..1a428c44 100644
--- a/plugins/signal-protocol/src/signal_helper.c
+++ b/plugins/signal-protocol/src/signal_helper.c
@@ -211,8 +211,6 @@ int signal_vala_encrypt(signal_buffer **output,
int algo, mode, error_code = SG_ERR_UNKNOWN;
if (aes_cipher(cipher, key_len, &algo, &mode)) return SG_ERR_INVAL;
- if (iv_len != 16 && iv_len != 12) return SG_ERR_INVAL;
-
gcry_cipher_hd_t ctx = {0};
if (gcry_cipher_open(&ctx, algo, mode, 0)) return SG_ERR_NOMEM;
@@ -294,8 +292,6 @@ int signal_vala_decrypt(signal_buffer **output,
if (aes_cipher(cipher, key_len, &algo, &mode)) return SG_ERR_INVAL;
if (ciphertext_len == 0) return SG_ERR_INVAL;
- if (iv_len != 16 && iv_len != 12) return SG_ERR_INVAL;
-
gcry_cipher_hd_t ctx = {0};
if (gcry_cipher_open(&ctx, algo, mode, 0)) return SG_ERR_NOMEM;
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-25 06:03:46 +0000