mitchell/selfpass
1
0
Fork 0
mirror of https://github.com/mitchell/selfpass.git synced 2025-12-14 21:27:22 +00:00
Code Issues Projects Releases Packages Wiki Activity

Add aes-cbc encryption; add config repo based on shared_preferences

Browse source
This commit is contained in:
mitchell 2019-07-16 02:14:54 -04:00
parent 80f9705b19
commit 67744527cc
15 changed files with 254 additions and 154 deletions
Download patch file Download diff file Expand all files Collapse all files

64
client/lib/utils/crypto.dart
View file

@ -1,31 +1,37 @@
import 'dart:math';
import 'dart:convert';
import 'dart:math';
import 'dart:typed_data';
import 'package:crypt/crypt.dart';
import 'package:encrypt/encrypt.dart';
import 'package:password_hash/password_hash.dart';
String hashPassword(String password) {
const saltSize = 16;
const saltIntMax = 256;
final random = Random.secure();
final saltInts =
List<int>.generate(saltSize, (_) => random.nextInt(saltIntMax));
final salt = base64.encode(saltInts);
final salt = Salt.generateAsBase64String(saltSize);
return Crypt.sha256(password, salt: salt).toString();
}
bool matchHashedPassword(String hashedPassword, String password) =>
Crypt(hashedPassword).match(password);
String decryptPassword(String masterpass, privateKey, cipherText) {
String decrypt(String cipherText, String masterpass, [String privateKey]) {
var cipherBytes = base64.decode(cipherText);
if (privateKey == null) {
final saltLength = cipherBytes[0];
cipherBytes = cipherBytes.sublist(1);
privateKey = base64.encode(cipherBytes.sublist(0, saltLength));
cipherBytes = cipherBytes.sublist(saltLength);
}
final key = PBKDF2().generateKey(
masterpass, privateKey, pbkdf2Rounds, keySize,
masterpass,
privateKey,
pbkdf2Rounds,
keySize,
);
var cipherBytes = base64.decode(cipherText);
final ivBytes = cipherBytes.sublist(0, aesBlockSize);
cipherBytes = cipherBytes.sublist(aesBlockSize);
@ -34,6 +40,40 @@ String decryptPassword(String masterpass, privateKey, cipherText) {
return encrypter.decrypt(Encrypted(cipherBytes), iv: iv);
}
String encrypt(String plainText, String masterpass, [String privateKey]) {
bool privateKeyWasEmpty = false;
if (privateKey == null) {
privateKey = Salt.generateAsBase64String(saltSize);
privateKeyWasEmpty = true;
}
final key = PBKDF2().generateKey(
masterpass,
privateKey,
pbkdf2Rounds,
keySize,
);
final random = Random.secure();
final ivBytes = List<int>.generate(aesBlockSize, (_) => random.nextInt(byteIntMax));
final iv = IV(Uint8List.fromList(ivBytes));
final encrypter = Encrypter(AES(Key(key), mode: AESMode.cbc));
final cipherBytes = List<int>.from(encrypter.encrypt(plainText, iv: iv).bytes);
cipherBytes.insertAll(0, ivBytes);
if (privateKeyWasEmpty) {
final base64PrivKey = base64.decode(privateKey);
cipherBytes.insertAll(0, base64PrivKey);
cipherBytes.insert(0, base64PrivKey.length);
}
return base64.encode(cipherBytes);
}
const saltSize = 16;
const pbkdf2Rounds = 4096;
const keySize = 32;
const aesBlockSize = 16;
const byteIntMax = 256;