Salt, a crypto library for Flutter
This is a simple and pure Dart library which adds support for cryptography in Flutter apps without having to use native C bindings. The goal for this project is to slowly adopt several crypto algorithms with proper tests.
Currently the following crypto algorithms are supported:
First of all add the following dependencies to your
dependencies: salt: ^0.1.1
Then you will find everything you need in the
Salt class. Below is an example how to
encrypt and decrypt a message using chacha20-poly1305:
import 'package:salt/binhex.dart'; import 'package:salt/salt.dart' var key = BinHex.hex2bin('4290bcb154173531f314af57f3be3b5006da371ece272afa1b5dbdd1100a1007'); var input = BinHex.hex2bin('86d09974840bded2a5ca'); var nonce = BinHex.hex2bin('cd7cf67be39c794a'); var ad = BinHex.hex2bin('87e229d4500845a079c0'); var ciphertext = Salt.chacha20Poly1305Encrypt(input, ad, nonce, key); var plaintext = Salt.chacha20Poly1305Decrypt(ciphertext, ad, nonce, key);
- This library uses a lot of ported code from the following repository: https://github.com/devi/Salt
- In this library we use
- Foreign Function Interface for interoperability with the C programming language. [...]
- HTML elements and other resources for web-based applications that need to interact with the browser and the DOM (Document Object Model). [...]
- Utility methods to efficiently manipulate typed JSInterop objects in cases where the name to call is not known at runtime. You should only use these methods when the same effect cannot be achieved with @JS annotations. These methods would be extension methods on JSObject if Dart supported extension methods.