Some notes on symmetric encryption in golang

Working today on passing around secure parameters I came across the post

Instead of LibSodium, you should use the nacl/box library that is part of golang.org/x/crypto. [1]

here is a simple example using the suggested libraries

the encrypt import suggested [1]

"golang.org/x/crypto/nacl/secretbox"

func getRandomNonce() ([]byte, [24]byte) {
    iv := make([]byte, 24)
    if _, err := io.ReadFull(rand.Reader, iv); err != nil {
        panic(err)
    }
    return iv, [24]byte(iv)
}

func encryptSecret(plainText []byte) ([]byte, [24]byte) {
    nonce, np := getRandomNonce()
    symKey := [32]byte(secretKeyBytes) …

box crypto cryptography encrypt encryption func go golang import libraries library org philosophy simple symmetric symmetric encryption today working