hasher

type Argon2 struct {
	Params *Argon2Params
}

type Argon2Params struct {
	Memory      uint32
	Iterations  uint32
	Parallelism uint8
	SaltLength  uint32
	KeyLength   uint32
}

type Bcrypt struct {
	Cost int
}

type Hasher interface {
	Hash(password string) ([]byte, error)
	Compare(hashedPassword, password string) error
}