Function decodeNonce

command/crypto/nacl/nacl.go:50–66

decodeNonce returns the nonce in bytes. If the input has the prefix base64: it will decode the rest using the base64 standard encoding.

(in string)

// decodeNonce returns the nonce in bytes. If the input has the prefix base64:
// it will decode the rest using the base64 standard encoding.
func decodeNonce(in string) ([]byte, error) {
	nonce := []byte(in)
	switch {
	case strings.HasPrefix(in, "string:"):
		return nonce[7:], nil
	case strings.HasPrefix(in, "base64:"):
		input := nonce[7:]
		nonce = make([]byte, base64.StdEncoding.DecodedLen(len(input)))
		n, err := base64.StdEncoding.Decode(nonce, input)
		if err != nil {
			return nil, errors.Wrap(err, "error decoding base64 nonce")
		}
		return nonce[:n], nil
	default:
		return nonce, nil
	}
}