如何使用CryptoJS配合Java进行AES加密和解密

PKCS5Padding

PKCS7Padding是一样的

function encrypt (msg, key, iv) {
return  CryptoJS.AES.encrypt(msg,  key, {
iv: iv,
padding: CryptoJS.pad.Pkcs7,
mode: CryptoJS.mode.CBC
});
}

function decrypt (cipherText, key, iv) {
return  CryptoJS.AES.decrypt({ ciphertext: cipherText }, key, {
iv: iv,
padding: CryptoJS.pad.Pkcs7,
mode: CryptoJS.mode.CBC

});
}

var key =    CryptoJS.enc.Base64.parse('ZGIyMTM5NTYxYzlmZTA2OA==');
var iv =    CryptoJS.enc.Base64.parse('ZGIyMTM5NTYxYzlmZTA2OA==');

var encrypted = encrypt('Hello World', key, iv);
var cipherText = encrypted.ciphertext.toString();
//java 使用 34439a96e68b129093105b67de81c0fc
console.log(cipherText);

// 拿到字符串类型的密文需要先将其用Hex方法parse一下
var cipherTextHexStr = CryptoJS.enc.Hex.parse(cipherText);

// 将密文转为Base64的字符串
// 只有Base64类型的字符串密文才能对其进行解密
var cipherTextBase64Str = CryptoJS.enc.Base64.stringify(cipherTextHexStr);

//下面三种解密都可以
var decrypted = CryptoJS.AES.decrypt(cipherTextBase64Str, key, {
iv: iv,
padding: CryptoJS.pad.Pkcs7,
mode: CryptoJS.mode.CBC
});

decrypted = decrypt(CryptoJS.enc.Base64.parse(cipherTextBase64Str), key, iv);
decrypted = decrypt(cipherTextHexStr, key, iv);

console.log(decrypted.toString(CryptoJS.enc.Utf8));

public static byte[] AES_CBC_Decrypt(byte[] data, byte[] key, byte[] iv) throws Exception{
Cipher cipher = getCipher(Cipher.DECRYPT_MODE, key, iv);
return cipher.doFinal(data);
}

private static Cipher getCipher(int mode, byte[] key, byte[] iv) throws Exception{
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

//因为AES的加密块大小是128bit(16byte), 所以key是128、192、256bit无关
//System.out.println("cipher.getBlockSize()： " + cipher.getBlockSize());

SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
cipher.init(mode, secretKeySpec, new IvParameterSpec(iv));

return cipher;
}

//传给crypto的key、iv要使用base64格式
//ZGIyMTM5NTYxYzlmZTA2OA==
byte[] bytes = "db2139561c9fe068".getBytes();
String base64Str = Base64.encodeBase64String(bytes);
System.out.println(base64Str);

String crypto = "34439a96e68b129093105b67de81c0fc";
data = Hex.decodeHex(crypto.toCharArray());
s = AES_CBC_Decrypt(data, bytes, bytes);
System.out.println(new String(s));