From e899668213ee8f7d3566bb5754b488d8633c30c7 Mon Sep 17 00:00:00 2001
From: Marvin W <git@larma.de>
Date: Tue, 10 Sep 2019 20:56:00 +0200
Subject: Add JET support

---
 .../omemo/src/file_transfer/file_decryptor.vala    | 24 +++++++++----------
 .../omemo/src/file_transfer/file_encryptor.vala    | 28 +++++++++++-----------
 2 files changed, 25 insertions(+), 27 deletions(-)

(limited to 'plugins/omemo/src')

diff --git a/plugins/omemo/src/file_transfer/file_decryptor.vala b/plugins/omemo/src/file_transfer/file_decryptor.vala
index bc6f8592..d60ecdc8 100644
--- a/plugins/omemo/src/file_transfer/file_decryptor.vala
+++ b/plugins/omemo/src/file_transfer/file_decryptor.vala
@@ -1,5 +1,6 @@
 using Dino.Entities;
 
+using Crypto;
 using Signal;
 
 namespace Dino.Plugins.Omemo {
@@ -56,20 +57,17 @@ public class OmemoFileDecryptor : FileDecryptor, Object {
                 key = iv_and_key[16:48];
             }
 
-            // Read data
-            uint8[] buf = new uint8[256];
-            Array<uint8> data = new Array<uint8>(false, true, 0);
-            size_t len = -1;
-            do {
-                len = yield encrypted_stream.read_async(buf);
-                data.append_vals(buf, (uint) len);
-            } while(len > 0);
-
-            // Decrypt
-            uint8[] cleartext = Signal.aes_decrypt(Cipher.AES_GCM_NOPADDING, key, iv, data.data);
             file_transfer.encryption = Encryption.OMEMO;
-            return new MemoryInputStream.from_data(cleartext);
-        } catch (Error e) {
+            debug("Decrypting file %s from %s", file_transfer.file_name, file_transfer.server_file_name);
+
+            SymmetricCipher cipher = new SymmetricCipher("AES-GCM");
+            cipher.set_key(key);
+            cipher.set_iv(iv);
+            return new ConverterInputStream(encrypted_stream, new SymmetricCipherDecrypter((owned) cipher));
+
+        } catch (Crypto.Error e) {
+            throw new FileReceiveError.DECRYPTION_FAILED("OMEMO file decryption error: %s".printf(e.message));
+        } catch (GLib.Error e) {
             throw new FileReceiveError.DECRYPTION_FAILED("OMEMO file decryption error: %s".printf(e.message));
         }
     }
diff --git a/plugins/omemo/src/file_transfer/file_encryptor.vala b/plugins/omemo/src/file_transfer/file_encryptor.vala
index a5445153..5b4e4d96 100644
--- a/plugins/omemo/src/file_transfer/file_encryptor.vala
+++ b/plugins/omemo/src/file_transfer/file_encryptor.vala
@@ -1,6 +1,7 @@
 using Gee;
 using Gtk;
 
+using Crypto;
 using Dino.Entities;
 using Xmpp;
 using Signal;
@@ -22,30 +23,29 @@ public class OmemoFileEncryptor : Dino.FileEncryptor, Object {
         var omemo_http_file_meta = new OmemoHttpFileMeta();
 
         try {
-            uint8[] buf = new uint8[256];
-            Array<uint8> data = new Array<uint8>(false, true, 0);
-            size_t len = -1;
-            do {
-                len = file_transfer.input_stream.read(buf);
-                data.append_vals(buf, (uint) len);
-            } while(len > 0);
-
             //Create a key and use it to encrypt the file
             uint8[] iv = new uint8[16];
             Plugin.get_context().randomize(iv);
             uint8[] key = new uint8[32];
             Plugin.get_context().randomize(key);
-            uint8[] ciphertext = aes_encrypt(Cipher.AES_GCM_NOPADDING, key, iv, data.data);
+
+            SymmetricCipher cipher = new SymmetricCipher("AES-GCM");
+            cipher.set_key(key);
+            cipher.set_iv(iv);
 
             omemo_http_file_meta.iv = iv;
             omemo_http_file_meta.key = key;
-            omemo_http_file_meta.size = ciphertext.length;
-            omemo_http_file_meta.mime_type = "pgp";
-            file_transfer.input_stream = new MemoryInputStream.from_data(ciphertext, GLib.free);
-        } catch (Error error) {
-            throw new FileSendError.ENCRYPTION_FAILED("HTTP upload: Error encrypting stream: %s".printf(error.message));
+            omemo_http_file_meta.size = file_transfer.size;
+            omemo_http_file_meta.mime_type = "omemo";
+            file_transfer.input_stream = new ConverterInputStream(file_transfer.input_stream, new SymmetricCipherEncrypter((owned) cipher));
+        } catch (Crypto.Error error) {
+            throw new FileSendError.ENCRYPTION_FAILED("OMEMO file encryption error: %s".printf(error.message));
+        } catch (GLib.Error error) {
+            throw new FileSendError.ENCRYPTION_FAILED("OMEMO file encryption error: %s".printf(error.message));
         }
 
+        debug("Encrypting file %s as %s", file_transfer.file_name, file_transfer.server_file_name);
+
         return omemo_http_file_meta;
     }
 
-- 
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