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* fix(messaging): missing chatId attribute sending localId of the message * feature(chatting): encryption * correctly encrypt and decrypt --------- Co-authored-by: Marwan Alhameedy <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| import 'dart:convert'; | ||
|
|
||
| import 'package:telware_cross_platform/core/models/chat_model.dart'; | ||
| import 'package:telware_cross_platform/features/chat/enum/chatting_enums.dart'; | ||
| import 'package:encrypt/encrypt.dart'; | ||
|
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| class EncryptionService { | ||
| // Private constructor | ||
| EncryptionService._internal(); | ||
|
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| // Singleton instance | ||
| static EncryptionService? _instance; | ||
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| // Getter for the singleton instance | ||
| static EncryptionService get instance { | ||
| return _instance ??= EncryptionService._internal(); | ||
| } | ||
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| String encrypt({ | ||
| required String msg, | ||
| required String? encryptionKey, | ||
| required String? initializationVector, | ||
| required ChatType chatType, | ||
| }) { | ||
| if (chatType != ChatType.private || | ||
| encryptionKey == null || | ||
| initializationVector == null) { | ||
| print('(((((((((('); | ||
| print(chatType.type); | ||
| print(encryptionKey); | ||
| print(initializationVector); | ||
| print('))))))))))'); | ||
| return msg; | ||
| } | ||
|
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| final key = Key.fromBase16(encryptionKey); | ||
| final iv = IV.fromBase16(initializationVector); | ||
| final encrypter = Encrypter(AES(key, mode: AESMode.cbc)); | ||
|
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| final encrypted = encrypter.encrypt(msg, iv: iv); | ||
|
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| return encrypted.base16; | ||
| } | ||
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| String decrypt({ | ||
| required String msg, | ||
| required String? encryptionKey, | ||
| required String? initializationVector, | ||
| required ChatType chatType, | ||
| }) { | ||
| if (chatType != ChatType.private || | ||
| encryptionKey == null || | ||
| initializationVector == null) { | ||
| return msg; | ||
| } | ||
|
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| final key = Key.fromBase16(encryptionKey); | ||
| final iv = IV.fromBase16(initializationVector); | ||
| final encrypter = Encrypter(AES(key, mode: AESMode.cbc)); | ||
|
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| final decryptedBytes = | ||
| encrypter.decryptBytes(Encrypted.fromBase16(msg), iv: iv); | ||
|
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| return utf8.decode(decryptedBytes); | ||
| } | ||
| } |
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