109 lines
2.7 KiB
Go
109 lines
2.7 KiB
Go
package aeshelper
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import (
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"bytes"
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"crypto/aes"
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"crypto/cipher"
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"encoding/base64"
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"encoding/hex"
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"github.com/forgoer/openssl"
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)
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const (
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sKey = "ptQJqRKyICCTeo6w" // "dde4b1f8a9e6b814"
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ivParameter = "O3vZvOJSxQDP9hKT" // "dde4b1f8a9e6b814"
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)
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// PswEncrypt 加密
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func PswEncrypt(src string) (string, error) {
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key := []byte(sKey)
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iv := []byte(ivParameter)
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result, err := Aes128Encrypt([]byte(src), key, iv)
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if err != nil {
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return "", err
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}
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return base64.RawStdEncoding.EncodeToString(result), nil
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}
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// PswDecrypt 解密
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func PswDecrypt(src string) (string, error) {
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key := []byte(sKey)
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iv := []byte(ivParameter)
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var result []byte
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var err error
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result, err = base64.StdEncoding.DecodeString(src)
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if err != nil {
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return "", err
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}
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origData, err := Aes128Decrypt(result, key, iv)
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if err != nil {
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return "", err
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}
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return string(origData), nil
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}
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func Aes128Encrypt(origData, key []byte, IV []byte) ([]byte, error) {
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if key == nil || len(key) != 16 {
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return nil, nil
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}
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if IV != nil && len(IV) != 16 {
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return nil, nil
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}
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block, err := aes.NewCipher(key)
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if err != nil {
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return nil, err
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}
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blockSize := block.BlockSize()
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origData = PKCS5Padding(origData, blockSize)
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blockMode := cipher.NewCBCEncrypter(block, IV[:blockSize])
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crypted := make([]byte, len(origData))
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// 根据CryptBlocks方法的说明，如下方式初始化crypted也可以
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blockMode.CryptBlocks(crypted, origData)
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return crypted, nil
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}
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func Aes128Decrypt(crypted, key []byte, IV []byte) ([]byte, error) {
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if key == nil || len(key) != 16 {
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return nil, nil
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}
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if IV != nil && len(IV) != 16 {
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return nil, nil
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}
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block, err := aes.NewCipher(key)
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if err != nil {
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return nil, err
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}
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blockSize := block.BlockSize()
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blockMode := cipher.NewCBCDecrypter(block, IV[:blockSize])
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origData := make([]byte, len(crypted))
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blockMode.CryptBlocks(origData, crypted)
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origData = PKCS5UnPadding(origData)
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return origData, nil
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}
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func PKCS5Padding(ciphertext []byte, blockSize int) []byte {
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padding := blockSize - len(ciphertext)%blockSize
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padtext := bytes.Repeat([]byte{byte(padding)}, padding)
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return append(ciphertext, padtext...)
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}
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func PKCS5UnPadding(origData []byte) []byte {
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length := len(origData)
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// 去掉最后一个字节 unpadding 次
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unpadding := int(origData[length-1])
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return origData[:(length - unpadding)]
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}
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// 密码加密
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func AesEcbEncrypt(origData string) string {
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//加密
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dst, _ := openssl.AesECBEncrypt([]byte(origData), []byte(sKey), openssl.PKCS7_PADDING)
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return hex.EncodeToString(dst)
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}
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// 密码解密
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func AesEcbDecrypt(origData string) string {
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value, _ := hex.DecodeString(origData)
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dst, _ := openssl.AesECBDecrypt(value, []byte(sKey), openssl.PKCS7_PADDING)
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return string(dst)
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}
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