39 lines
1.2 KiB
Dart
39 lines
1.2 KiB
Dart
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import 'dart:convert';
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import 'dart:typed_data';
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import 'package:encrypt/encrypt.dart';
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import 'package:pointycastle/asymmetric/api.dart' as d;
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class RSAEncryption {
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final parser = RSAKeyParser();
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//encrypted data must be in base 64
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String decrypt({required String privateKey, required String encryptedData}) {
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try {
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Uint8List encryptedData_ =
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Uint8List.fromList(base64Decode(encryptedData));
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// Parse the private key from the PEM format
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final __privateKey__ = parser.parse(privateKey) as d.RSAPrivateKey;
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// Create an RSA decrypter with the private key
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final decrypter = Encrypter(RSA(privateKey: __privateKey__));
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// Decrypt the data
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final decryptedData = decrypter.decryptBytes(Encrypted(encryptedData_));
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// Convert the decrypted data to a string
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String decryptedText = utf8.decode(decryptedData);
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return decryptedText;
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} catch (e) {
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throw ("Decrypt failed:$e");
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}
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}
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String encrypt({required String data, required String publicKey}) {
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d.RSAPublicKey publicKey_ = parser.parse(publicKey) as d.RSAPublicKey;
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final encrypter = Encrypter(RSA(publicKey: publicKey_));
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final encrypted = encrypter.encrypt(data);
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return encrypted.base64;
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}
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}
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