A tiny, self-contained cryptography library, implementing authenticated encryption and keyed hashing.
This is a port to Go. It has to be fully compatible with the C, Zig and JavaScript (TypeScript) versions.
go get -u "github.com/x13a/go-charm"package main
import (
"crypto/rand"
"fmt"
"github.com/x13a/go-charm"
)
func randomBytes(buf []byte) error {
_, err := rand.Read(buf)
return err
}
func main() {
msg := []byte("Hello, World!")
var c *charm.Charm
var err error
key := make([]byte, charm.KeyLength)
err = randomBytes(key)
if err != nil {
panic(err)
}
// Nonce is optional
nonce := make([]byte, charm.NonceLength)
err = randomBytes(nonce)
if err != nil {
panic(err)
}
// Encrypt
c, err = charm.NewCharm(key, nonce)
if err != nil {
panic(err)
}
tag := c.Encrypt(msg)
// Decrypt
c, err = charm.NewCharm(key, nonce)
if err != nil {
panic(err)
}
err = c.Decrypt(msg, tag)
if err != nil {
panic(err)
}
// Hash
c, err = charm.NewCharm(key, nonce)
if err != nil {
panic(err)
}
hash := c.Hash(msg)
fmt.Printf("%x\n", hash)
}- charm original implementation in C
- zig-charm an implementation of Charm in the Zig language
- charm.js an implementation of Charm in the JavaScript (TypeScript) language
MIT