lukechampine / ascon

ascon

go get lukechampine.com/ascon

This repo contains a pure-Go implementation of ASCON-128, a lightweight authenticated encryption algorithm. (ASCON is a family of algorithms, but currently this repo only implements ASCON-128.)

Usage

ascon.AEAD implements the cipher.AEAD interface, so usage should be familiar:

import "lukechampine.com/ascon"

func main() {
    key := make([]byte, ascon.KeySize) // in practice, read this from crypto/rand
    aead, _ := ascon.New(key)
    nonce := make([]byte, ascon.NonceSize)
    plaintext := []byte("Hello, world!")
    ciphertext := aead.Seal(nil, nonce, plaintext, nil)
    recovered, _ := aead.Open(nil, nonce, ciphertext, nil)
    println(string(recovered)) // Hello, world!
}

Benchmarks

The pure Go code is pretty underwhelming; expect 100-200 MB/s. Maybe I'll add an asm implementation someday.