https://github.com/meetleev/flutter_crypto_x

A Dart library for encryption and decryption. Advanced RSA based on pointycastle.
https://github.com/meetleev/flutter_crypto_x

oaep pkcs1 rsa rsa-encryption

Last synced: 1 day ago
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A Dart library for encryption and decryption. Advanced RSA based on pointycastle.

• Host: GitHub
• URL: https://github.com/meetleev/flutter_crypto_x
• Owner: meetleev
• License: apache-2.0
• Created: 2022-09-16T10:48:13.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2024-01-27T12:07:29.000Z (10 months ago)
• Last Synced: 2024-02-08T10:22:23.790Z (9 months ago)
• Topics: oaep, pkcs1, rsa, rsa-encryption
• Language: Dart
• Homepage:
• Size: 278 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
# crypto_x

[![Pub](https://img.shields.io/pub/v/crypto_x.svg?style=flat-square)](https://pub.dev/packages/crypto_x)

[![support](https://img.shields.io/badge/platform-android%20|%20ios%20|%20web%20|%20macos%20|%20windows%20|%20linux%20-blue.svg)](https://pub.dev/packages/crypto_x)

A Dart library for encryption and decryption. Advanced RSA, AES based on pointycastle.

## Features

* RSA with PKCS1 and OAEP encoding.

* Generate RSA KeyPairs and import to pem format.

## Getting started

Add the package to your `pubspec.yaml`:

```yaml

dependencies:

  crypto_x: 

```

## Usage

### AES

#### Supported modes are:

- CBC `AESMode.cbc`

- CFB-8 `AESMode.cfb8`

- CFB-128 `AESMode.cfb`

- CTR `AESMode.ctr`

- ECB `AESMode.ecb`

- OFB-128 `AESMode.ofb`

```dart

    final key = CipherKey.fromUtf8('your key................');

    final iv = CipherIV.fromLength(16);

    var aes = AES(key: key, mode: AESMode.cbc);

    CryptoBytes encrypted = aes.encrypt(CryptoBytes.fromUTF8('hello world.'), iv: iv);

    String encryptedBase64 = decrypted.base64;

    CryptoBytes decrypted = aes.decrypt(encrypted, iv: iv);

    String plainText = decrypted.toString();

```

### RSA

* encrypt and decrypt

```dart

    var privateRSA = RSA(

        privateKey: privateKey);

    var publicRSA = RSA(

        publicKey: publicKey);

    CryptoBytes signature = publicRSA.encrypt(CryptoBytes.fromUTF8('hello world'));

    String ciphertext = signature.base64;

    CryptoBytes plainBytes = publicRSA.decrypt(signature);

    String plainText = plainBytes.toString();

```

* sign and verify

```dart

    var rsaSigner = RSASigner(digestType = DigestType.sha256, privateKey: privateKey, publicKey: publicKey);

    var plainBytes = CryptoBytes.fromUTF8('hello world');

    CryptoBytes signature = rsaSigner.sign(plainBytes);

    bool isSame = rsaSigner.verify(signature, plainBytes);

```

[comment]: <> (## Additional information)