package hash

import (
	"crypto/hmac"
	"crypto/md5"
	"crypto/sha1"
	"crypto/sha256"
	"crypto/sha512"
)

// HmacMD5 hmac md5 hash
func HmacMD5(k, bs []byte) (hs []byte, err error) {
	h := hmac.New(md5.New, k)
	_, err = h.Write(bs)
	if err != nil {
		return
	}
	hs = h.Sum(nil)
	return
}

// HmacSHA1 hmac sha1 hash
func HmacSHA1(k, bs []byte) (hs []byte, err error) {
	h := hmac.New(sha1.New, k)
	_, err = h.Write(bs)
	if err != nil {
		return
	}
	hs = h.Sum(nil)
	return
}

// HmacSHA256 hmac sha256 hash
func HmacSHA256(k, bs []byte) (hs []byte, err error) {
	h := hmac.New(sha256.New, k)
	_, err = h.Write(bs)
	if err != nil {
		return
	}
	hs = h.Sum(nil)
	return
}

// HmacSHA512 hmac sha256 hash
func HmacSHA512(k, bs []byte) (hs []byte, err error) {
	h := hmac.New(sha512.New, k)
	_, err = h.Write(bs)
	if err != nil {
		return
	}
	hs = h.Sum(nil)
	return
}