publish lancet

cryptor/basic.go

@@ -0,0 +1,96 @@
+// Copyright 2021 dudaodong@gmail.com. All rights reserved.
+// Use of this source code is governed by MIT license
+
+// Package cryptor implements some util functions to encrypt and decrypt.
+// Contain base64, hmac, sha, aes, des, and rsa
+package cryptor
+
+import (
+	"crypto/hmac"
+	"crypto/md5"
+	"crypto/sha1"
+	"crypto/sha256"
+	"crypto/sha512"
+	"encoding/base64"
+	"encoding/hex"
+	"io/ioutil"
+)
+
+// Base64StdEncode encode string with base64 encoding
+func Base64StdEncode(s string) string {
+	return base64.StdEncoding.EncodeToString([]byte(s))
+}
+
+// Base64StdEncode decode a base64 encoded string
+func Base64StdDecode(s string) string {
+	b, _ := base64.StdEncoding.DecodeString(s)
+	return string(b)
+}
+
+// Md5Str return the md5 value of string
+func Md5String(s string) string {
+	h := md5.New()
+	h.Write([]byte(s))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+// Md5File return the md5 value of file
+func Md5File(filename string) (string, error) {
+	f, err := ioutil.ReadFile(filename)
+	if err != nil {
+		return "", err
+	}
+
+	h := md5.New()
+	h.Write(f)
+	return hex.EncodeToString(h.Sum(nil)), nil
+}
+
+// HmacMd5 return the hmac hash of string use md5
+func HmacMd5(data, key string) string {
+	h := hmac.New(md5.New, []byte(key))
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum([]byte("")))
+}
+
+// HmacSha1 return the hmac hash of string use sha1
+func HmacSha1(data, key string) string {
+	h := hmac.New(sha1.New, []byte(key))
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum([]byte("")))
+}
+
+// HmacSha256 return the hmac hash of string use sha256
+func HmacSha256(data, key string) string {
+	h := hmac.New(sha256.New, []byte(key))
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum([]byte("")))
+}
+
+// HmacSha512 return the hmac hash of string use sha512
+func HmacSha512(data, key string) string {
+	h := hmac.New(sha512.New, []byte(key))
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum([]byte("")))
+}
+
+// Sha1 return the sha1 value (SHA-1 hash algorithm) of string
+func Sha1(data string) string {
+	sha1 := sha1.New()
+	sha1.Write([]byte(data))
+	return hex.EncodeToString(sha1.Sum([]byte("")))
+}
+
+// Sha256 return the sha256 value (SHA256 hash algorithm) of string
+func Sha256(data string) string {
+	sha256 := sha256.New()
+	sha256.Write([]byte(data))
+	return hex.EncodeToString(sha256.Sum([]byte("")))
+}
+
+// Sha512 return the sha512 value (SHA512 hash algorithm) of string
+func Sha512(data string) string {
+	sha512 := sha512.New()
+	sha512.Write([]byte(data))
+	return hex.EncodeToString(sha512.Sum([]byte("")))
+}