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Programming language: Go

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README

branca

Build Status Go Report Card GoDoc

branca is a secure alternative to JWT, This implementation is written in pure Go (no cgo dependencies) and implements the branca token specification.

Requirements

Go 1.13+

Install

go get -u github.com/hako/branca

Example

package main

import (
    "fmt"
    "github.com/hako/branca"
)

func main() {
    b := branca.NewBranca("supersecretkeyyoushouldnotcommit") // This key must be exactly 32 bytes long.

    // Encode String to Branca Token.
    token, err := b.EncodeToString("Hello world!")
    if err != nil {
        fmt.Println(err)
    }

    //b.SetTTL(3600) // Uncomment this to set an expiration (or ttl) of the token (in seconds).
    //token = "87y8daMzSkn7PA7JsvrTT0JUq1OhCjw9K8w2eyY99DKru9FrVKMfeXWW8yB42C7u0I6jNhOdL5ZqL" // This token will be not allowed if a ttl is set.

    // Decode Branca Token.
    message, err := b.DecodeToString(token)
    if err != nil {
        fmt.Println(err) // token is expired.
        return
    }
    fmt.Println(token) // 87y8da....
    fmt.Println(message) // Hello world!
}

Todo

Here are a few things that need to be done:

  • [x] Remove cgo dependencies.
  • [x] Move to a pure XChaCha20 algorithm in Go.
  • [x] Add more tests than just acceptance tests.
  • [x] Increase test coverage.
  • [ ] Additional Methods. (Encode, Decode []byte)
  • [ ] Performance benchmarks.
  • [ ] More comments, examples and documentation.

Contributing

Contributions are welcome! Fork this repo and add your changes and submit a PR.

If you would like to fix a bug, add a feature or provide feedback you can do so in the issues section.

You can run tests by runnning go test. Running go test; go vet; golint is recommended.

License

MIT


*Note that all licence references and agreements mentioned in the branca README section above are relevant to that project's source code only.