branca
Crate | Documentation | License | Travis |
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Branca is a secure alternative token format to JWT. This implementation is written in pure Rust and uses the XChaCha20-Poly1305 AEAD (Authenticated Encryption with Associated Data) stream cipher for generating authenticated and encrypted tamper-proof tokens. More information about the branca token specification can be found here in branca-spec.
Requirements
- Rust 1.18+
- Cargo
Installation
Add this line to your Cargo.toml under the dependencies section:
[]
= "^0.8.0"
Then you can import the crate into your project with these lines:
extern crate branca;
use ;
Example Usage
The simplest way to use this crate is to use Branca::new()
in this example below:
let key = b"supersecretkeyyoushouldnotcommit".to_vec;
let token = new.unwrap;
let ciphertext = token.encode.unwrap;
let payload = token.decode.unwrap;
println; // "Hello World!"
See more examples of setting fields in the Branca struct and in the Documentation section.
Direct usage without Branca builder.
Encoding:
let key = b"supersecretkeyyoushouldnotcommit".to_vec;
let nonce = *b"\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c";
let message = "Hello world!";
let timestamp = 123206400;
let branca_token = encode.unwrap;
// branca_token = 875GH233T7IYrxtgXxlQBYiFobZMQdHAT51vChKsAIYCFxZtL1evV54vYqLyZtQ0ekPHt8kJHQp0a
Decoding:
let ciphertext = branca_token.as_str;
let key = b"supersecretkeyyoushouldnotcommit".to_vec;
let ttl = 0; // The ttl can be used to determine if the supplied token has expired or not.
let decoded = decode;
if decoded.is_err else
Encode/Decode arbitrary data structures with Serde.
Since Branca is able to work with any format of data in the payload, it is possible for the payload to be anything from a JSON object, plaintext, raw bytes, protocol buffers or even a JWT.
Here is a example of using Branca to encode/decode a typical JSON object with serde_json.
Add the following into your Cargo.toml file:
[]
= "^0.8.0"
= "^1.0"
= "1.0.83"
= "0.13.5"
extern crate serde_json;
extern crate serde_derive;
extern crate branca;
use ;
Branca uses the Ring crate as to generate secure random nonces. You can still use Ring's SecureRandom or sodiumoxide's aead gen_nonce() or gen_key() for generating secure nonces and keys for example.
But do note that the nonce must be 24 bytes in length. Keys must be 32 bytes in length.
Building
cargo build
Testing
cargo test --examples
Contributing
Contributions and patches are welcome! Fork this repository, add your changes and send a PR.
Before you send a PR, make sure you run cargo test --examples
first to check if your changes pass the tests.
If you would like to fix a bug or add a enhancement, please do so in the issues section and provide a short description about your changes.
License
MIT