security/utils.go
func HashPassword(password []byte, salt []byte) (hash []byte, err error) {
	hash, err = scrypt.Key(password, salt, N, R, P, KEYLENGTH)
	if err != nil {
		return nil, err
	}
	return
}
func HashPassword(password []byte, salt []byte) (hash []byte, err error) {
	hash, err = scrypt.Key(password, salt, N, R, P, KEYLENGTH)
	if err != nil {
		return nil, err
	}
	return
}
//HashPassword hash un mot de passe