[TOC]

异构系统基于RESTful接口加解密

环境：GO1.8/JDK1.8/Python2.7

GO示例

package commonimport (	"crypto/aes"	"crypto/cipher"	"bytes"	"fmt"	"encoding/base64")var key = []byte("B31F2A75FBF94099")var iv = []byte("1234567890123456")type AES_CBC struct {}func Encrypt(origData []byte) (string, error) {	block, err := aes.NewCipher(key)	if err != nil {		return "", err	}	blockSize := block.BlockSize()	origData = PKCS5Padding(origData, blockSize)	// origData = ZeroPadding(origData, block.BlockSize())	blockMode := cipher.NewCBCEncrypter(block, iv)	crypted := make([]byte, len(origData))	blockMode.CryptBlocks(crypted, origData)	return base64.StdEncoding.EncodeToString(crypted), nil}func Decrypt(crypted string) (string, error) {	decodeData,err:=base64.StdEncoding.DecodeString(crypted)	if err != nil {		return "",err	}	block, err := aes.NewCipher(key)	if err != nil {		return "", err	}	//blockSize := block.BlockSize()	blockMode := cipher.NewCBCDecrypter(block, iv)	origData := make([]byte, len(decodeData))	blockMode.CryptBlocks(origData, decodeData)	origData = PKCS5UnPadding(origData)	// origData = ZeroUnPadding(origData)	return string(origData), nil}func ZeroPadding(ciphertext []byte, blockSize int) []byte {	padding := blockSize - len(ciphertext) % blockSize	padtext := bytes.Repeat([]byte{0}, padding)	return append(ciphertext, padtext...)}func ZeroUnPadding(origData []byte) []byte {	length := len(origData)	unpadding := int(origData[length - 1])	return origData[:(length - unpadding)]}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)]}复制代码

Java示例

package com.yz.common.security.aes;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;import javax.crypto.Cipher;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;/** * @author yangzhao * @Description * @Date create by 15:49 18/2/3 */public class AES_CBC implements AES {    /**     * 加密用的Key 可以用26个字母和数字组成     * 此处使用AES-128-CBC加密模式，key需要为16位。     */    private static String sKey = "B31F2A75FBF94099";    private static String ivParameter = "1234567890123456";    // 加密    @Override    public String encrypt(String sSrc) throws Exception {        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");        byte[] raw = sKey.getBytes();        SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");        IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());//使用CBC模式，需要一个向量iv，可增加加密算法的强度        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);        byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));        return new BASE64Encoder().encode(encrypted);//此处使用BASE64做转码。    }    // 解密    @Override    public String decrypt(String sSrc) throws Exception {        try {            byte[] raw = sKey.getBytes("ASCII");            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");            IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);            byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);//先用base64解密            byte[] original = cipher.doFinal(encrypted1);            String originalString = new String(original, "utf-8");            return originalString;        } catch (Exception ex) {            return null;        }    }}复制代码

Python示例

依赖pycrypto库，下载地址https://pypi.python.org/pypi/pycrypto

# -*- coding: utf-8 -*-import base64from Crypto.Cipher import AESAES_SECRET_KEY = 'B31F2A75FBF94099' #此处16|24|32个字符IV = "1234567890123456"# padding算法BS = len(AES_SECRET_KEY)pad = lambda s: s + (BS - len(s) % BS) * chr(BS - len(s) % BS)unpad = lambda s : s[0:-ord(s[-1])]class AES_ENCRYPT(object):    def __init__(self):        self.key = AES_SECRET_KEY        self.mode = AES.MODE_CBC    #加密函数    def encrypt(self, text):        cryptor = AES.new(self.key, self.mode,IV)        self.ciphertext = cryptor.encrypt(pad(text))        #AES加密时候得到的字符串不一定是ascii字符集的，输出到终端或者保存时候可能存在问题，使用base64编码        return base64.b64encode(self.ciphertext)    #解密函数    def decrypt(self, text):        decode = base64.b64decode(text)        cryptor = AES.new(self.key, self.mode,IV)        plain_text = cryptor.decrypt(decode)        return plain_textif __name__ == '__main__':    aes_encrypt = AES_ENCRYPT()    text = "python 加密"    e = aes_encrypt.encrypt(text)    d = aes_encrypt.decrypt(e)    print text    print e    print d复制代码

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