var crypto = require("crypto");
/**
* aes-128-cbc对称加密
* @param {String} data，加密的明文
* @param {String} secretKey，密钥
* @param {Buffer} iv，向量，16位字节数组
* @return {String} 密文
* @api public
* @remark 密钥的生成规则：普通字符串，用UTF8转换成Buffer后，需要对此计算MD5，再转换成Buffer对象。
*/
function cbcEncrypt(data, secretKey, iv) {
secretKey = new Buffer(secretKey, "utf8");
secretKey = crypto.createHash("md5").update(secretKey).digest("hex");
secretKey = new Buffer(secretKey, "hex");
var cipher = crypto.createCipheriv("aes-128-cbc", secretKey, iv), coder = [];
coder.push(cipher.update(data, "utf8", "hex"));
coder.push(cipher.final("hex"));
return coder.join("");
}
/**
* aes-128-ecb对称解密
* @param {String} data，解密的密文
* @param {String} secretKey，密钥
* @param {Buffer} iv，向量，16位字节数组
* @return {String} 明文
* @api public
*/
function cbcDecrypt(data, secretKey, iv) {
secretKey = Buffer(secretKey, "utf8");
secretKey = crypto.createHash("md5").update(secretKey).digest("hex");
secretKey = new Buffer(secretKey, "hex");
var cipher = crypto.createDecipheriv("aes-128-cbc", secretKey, iv), coder = [];
coder.push(cipher.update(data, "hex", "utf8"));
coder.push(cipher.final("utf8"));
return coder.join("");
}
var iv = new Buffer("1234567890123456","utf8");
var key = "3d8be02c70665eaba6877a67ce3d49b2";
var data = '张冰冰';
var enc_str = cbcEncrypt(data,key, iv);
var dec_str = cbcDecrypt(enc_str,key, iv);
console.log("密文："+ enc_str," / 明文："+dec_str);
public class AesTest2 {
public static String cbcEncrypt(String content, String secretKey, byte[] iv) throws Exception {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] thedigest = md.digest(secretKey.getBytes("UTF-8"));
SecretKeySpec skc = new SecretKeySpec(thedigest, "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
//算法参数
AlgorithmParameterSpec paramSpec = new IvParameterSpec(iv);
cipher.init(Cipher.ENCRYPT_MODE, skc, paramSpec);
byte[] input = content.getBytes("UTF-8");
int len = input.length;
byte[] cipherText = new byte[cipher.getOutputSize(len)];
int ctLength = cipher.update(input, 0, len, cipherText, 0);
ctLength += cipher.doFinal(cipherText, ctLength);
return byte2hex(cipherText);
}
/**
* AES-128-CBC对称解密
* @param encrypted 解密的密文
* @param secretKey 密钥
* @param iv CBC向量，长度为16的byte数组
* @return 明文
* @throws Exception
*/ public static String cbcDecrypt(String encrypted, String secretKey, byte[] iv) throws Exception {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] thedigest = md.digest(secretKey.getBytes("UTF-8"));
SecretKeySpec skey = new SecretKeySpec(thedigest, "AES");
Cipher dcipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
//算法参数
AlgorithmParameterSpec paramSpec = new IvParameterSpec(iv);
dcipher.init(Cipher.DECRYPT_MODE, skey, paramSpec);
byte[] clearbyte = dcipher.doFinal(toByte(encrypted));
return new String(clearbyte);
}
/**
* 将十六进制字符串转换成字节数组
*
* @param hex 十六进制字符串
* @return byte数组
*/
public static byte[] toByte(String hex) {
byte[] binary = new byte[hex.length() / 2];
for (int i = 0, l = binary.length; i < l; i++) {
binary[i] = (byte) Integer.parseInt(hex.substring(2 * i, 2 * i + 2), 16);
}
return binary;
}
/**
* 字节数组转换为二行制表示
*
* @param inStr 需要转换字节数组
* @return 字节数组的二进制表示
*/
public static String byte2hex(byte[] inStr) {
StringBuilder out = new StringBuilder(inStr.length * 2);
for (int i = 0, l = inStr.length; i < l; i++) {
// 字节做"与"运算，去除高位置字节 11111111
if (((int) inStr[i] & 0xff) < 0x10) {
//小于十前面补零
out.append("0");
}
out.append(Long.toString((int) inStr[i] & 0xff, 16));
}
return out.toString();
}
public static void main(String[] args) {
try {
String data = "你好";
byte[] iv = "1234567890123456".getBytes("UTF-8");
String key = "3d8be02c70665eaba6877a67ce3d49b2";
String enc = cbcEncrypt(data, key, iv);
System.out.println("encoding: " + enc);
System.out.println("decoding: " + cbcDecrypt(enc, key, iv));
} catch (Exception e) {
e.printStackTrace();
}
}
}