1

pkg/cryptohelper/aeshelper/aeshelper.go

@@ -0,0 +1,107 @@
+package aeshelper
+
+import (
+	"bytes"
+	"crypto/aes"
+	"crypto/cipher"
+	"encoding/base64"
+	"encoding/hex"
+	"github.com/forgoer/openssl"
+)
+
+const (
+	sKey        = "ptQJqRKxICCTeo6w" // "dde4b1f8a9e6b814"
+	ivParameter = "O3vZvOJSnQDP9hKT" // "dde4b1f8a9e6b814"
+
+)
+
+// PswEncrypt 加密
+func PswEncrypt(src string) (string, error) {
+	key := []byte(sKey)
+	iv := []byte(ivParameter)
+	result, err := Aes128Encrypt([]byte(src), key, iv)
+	if err != nil {
+		return "", err
+	}
+	return base64.RawStdEncoding.EncodeToString(result), nil
+}
+
+// PswDecrypt 解密
+func PswDecrypt(src string) (string, error) {
+	key := []byte(sKey)
+	iv := []byte(ivParameter)
+	var result []byte
+	var err error
+	result, err = base64.StdEncoding.DecodeString(src)
+	if err != nil {
+		return "", err
+	}
+	origData, err := Aes128Decrypt(result, key, iv)
+	if err != nil {
+		return "", err
+	}
+	return string(origData), nil
+}
+
+func Aes128Encrypt(origData, key []byte, IV []byte) ([]byte, error) {
+	if key == nil || len(key) != 16 {
+		return nil, nil
+	}
+	if IV != nil && len(IV) != 16 {
+		return nil, nil
+	}
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+	blockSize := block.BlockSize()
+	origData = PKCS5Padding(origData, blockSize)
+	blockMode := cipher.NewCBCEncrypter(block, IV[:blockSize])
+	crypted := make([]byte, len(origData))
+	// 根据CryptBlocks方法的说明，如下方式初始化crypted也可以
+	blockMode.CryptBlocks(crypted, origData)
+	return crypted, nil
+}
+func Aes128Decrypt(crypted, key []byte, IV []byte) ([]byte, error) {
+	if key == nil || len(key) != 16 {
+		return nil, nil
+	}
+	if IV != nil && len(IV) != 16 {
+		return nil, nil
+	}
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+	blockSize := block.BlockSize()
+	blockMode := cipher.NewCBCDecrypter(block, IV[:blockSize])
+	origData := make([]byte, len(crypted))
+	blockMode.CryptBlocks(origData, crypted)
+	origData = PKCS5UnPadding(origData)
+	return origData, nil
+}
+func PKCS5Padding(ciphertext []byte, blockSize int) []byte {
+	padding := blockSize - len(ciphertext)%blockSize
+	padtext := bytes.Repeat([]byte{byte(padding)}, padding)
+	return append(ciphertext, padtext...)
+}
+func PKCS5UnPadding(origData []byte) []byte {
+	length := len(origData)
+	// 去掉最后一个字节 unpadding 次
+	unpadding := int(origData[length-1])
+	return origData[:(length - unpadding)]
+}
+
+// 密码加密
+func AesEcbEncrypt(origData string) string {
+	//加密
+	dst, _ := openssl.AesECBEncrypt([]byte(origData), []byte(sKey), openssl.PKCS7_PADDING)
+	return hex.EncodeToString(dst)
+}
+
+// 密码解密
+func AesEcbDecrypt(origData string) string {
+	value, _ := hex.DecodeString(origData)
+	dst, _ := openssl.AesECBDecrypt(value, []byte(sKey), openssl.PKCS7_PADDING)
+	return string(dst)
+}