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feat: Update MessageCrypto to emulate crypto-js behavior for AES encryption and decryption with detailed logging

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This commit is contained in:
k1ngsterr1
2026-01-10 23:46:01 +05:00
parent ca219fd821
commit 284731fc43
1 changed files with 28 additions and 4 deletions
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32
app/src/main/java/com/rosetta/messenger/crypto/MessageCrypto.kt
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@@ -303,12 +303,22 @@ object MessageCrypto {
secureRandom.nextBytes(iv)
val ivHex = iv.toHex()
// Шифруем keyAndNonce напрямую с AES-CBC используя sharedSecret как ключ
// React Native теперь использует crypto.enc.Latin1 для binary data
// КРИТИЧНО: Эмулируем поведение crypto-js!
// React Native делает: key.toString('binary') → crypto.AES.encrypt(string, ...)
// crypto-js интерпретирует string как UTF-8!
// Поэтому: ByteArray → Latin1 String → UTF-8 bytes → encrypt
val latin1String = String(keyAndNonce, Charsets.ISO_8859_1)
val utf8Bytes = latin1String.toByteArray(Charsets.UTF_8)
android.util.Log.d("MessageCrypto", "📝 Key encoding:")
android.util.Log.d("MessageCrypto", " - Original bytes: ${keyAndNonce.size}")
android.util.Log.d("MessageCrypto", " - Latin1 string chars: ${latin1String.length}")
android.util.Log.d("MessageCrypto", " - UTF-8 bytes: ${utf8Bytes.size}")
val aesKey = SecretKeySpec(sharedSecret, "AES")
val cipher = Cipher.getInstance("AES/CBC/PKCS5Padding")
cipher.init(Cipher.ENCRYPT_MODE, aesKey, IvParameterSpec(iv))
val encryptedKey = cipher.doFinal(keyAndNonce)
val encryptedKey = cipher.doFinal(utf8Bytes)
val encryptedKeyHex = encryptedKey.toHex()
// Формат как в RN: btoa(ivHex:encryptedHex:ephemeralPrivateHex)
@@ -358,7 +368,21 @@ object MessageCrypto {
val cipher = Cipher.getInstance("AES/CBC/PKCS5Padding")
cipher.init(Cipher.DECRYPT_MODE, aesKey, IvParameterSpec(iv))
return cipher.doFinal(encryptedKey)
val decryptedUtf8Bytes = cipher.doFinal(encryptedKey)
// КРИТИЧНО: Обратная конвертация как в crypto-js!
// crypto-js делает: decrypt → WordArray → .toString(Utf8) → string
// Потом: Buffer.from(string, 'binary') → bytes
// Эквивалент: UTF-8 bytes → UTF-8 string → Latin1 bytes
val utf8String = String(decryptedUtf8Bytes, Charsets.UTF_8)
val originalBytes = utf8String.toByteArray(Charsets.ISO_8859_1)
android.util.Log.d("MessageCrypto", "📝 Key decoding:")
android.util.Log.d("MessageCrypto", " - Decrypted UTF-8 bytes: ${decryptedUtf8Bytes.size}")
android.util.Log.d("MessageCrypto", " - UTF-8 string chars: ${utf8String.length}")
android.util.Log.d("MessageCrypto", " - Original bytes: ${originalBytes.size}")
return originalBytes
}
/**