如果 出现 异常 javax.crypto.IllegalBlockSizeException
那就看我博客园的 另外一篇 解决这个异常
帮客户整了1天 试了N个JS 的方法 终于找我弄出来了！
java部分：
package com.util;
import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import javax.crypto.spec.IvParameterSpec;
// 算法名称/加密模式/填充方式
public static final String CIPHER_ALGORITHM_ECB = "DES/ECB/ZeroBytePadding";
//主要看填充方式 PKCS5PaddingPKCS7Padding 还有其他的填充方式没用过
// public static final String CIPHER_ALGORITHM_CBC = "DES/CBC/ZerosPadding";
public static void main(String[] args) throws Exception {
/*
* 使用 ECB mode
* 密钥生成器 生成密钥
* ECB mode cannot use IV
*/
byte[] key = "DAF3100DCD39CAEB5DD35E9651712A86".getBytes();
byte[] encrypt = encrypt("1212121211221",key);
String encodeBase64String = Base64.encodeBase64String(encrypt);
System.out.println(encodeBase64String);
System.out.println(new String(decrypt(encrypt, key)));
}
static byte[] getIV() {
String iv = "asdfivh7"; //IV length: must be 8 bytes long
return iv.getBytes();
}
/**
* 生成密钥
*
* @return
* @throws Exception
*/
private static byte[] generateKey() throws Exception {
KeyGenerator keyGenerator = KeyGenerator.getInstance(KEY_ALGORITHM);
keyGenerator.init(56); //des 必须是56, 此初始方法不必须调用
SecretKey secretKey = keyGenerator.generateKey();
return secretKey.getEncoded();
}
/**
* 还原密钥
*
* @param key
* @return
* @throws Exception
*/
private static Key toKey(byte[] key) throws Exception {
DESKeySpec des = new DESKeySpec(key);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(KEY_ALGORITHM);
SecretKey secretKey = keyFactory.generateSecret(des);
return secretKey;
}
/**
* 加密
* @param data 原文
* @param key
* @return 密文
* @throws Exception
*/
public static byte[] encrypt(byte[] data, byte[] key) throws Exception {
Key k = toKey(key);
Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM_ECB);
cipher.init(Cipher.ENCRYPT_MODE, k);
byte[] doFinal = cipher.doFinal(data);
return cipher.doFinal(data);
}
/**
* 解密
* @param data 密文
* @param key
* @return 明文、原文
* @throws Exception
*/
public static byte[] decrypt(byte[] data, byte[] key) throws Exception {
Key k = toKey(key);
Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM_ECB);
cipher.init(Cipher.DECRYPT_MODE, k);
return cipher.doFinal(data);
}
}
Html部分
JS设置DES加密处理
//DES 解密 加密
function encryptByDES(message, key) {
var keyHex = CryptoJS.enc.Utf8.parse(key);
var encrypted = CryptoJS.DES.encrypt(message, keyHex, {
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Zero
});
return encrypted.toString();
}
//DES 解密
function decryptByDES(ciphertext, key) {
var keyHex = CryptoJS.enc.Utf8.parse(key);
// direct decrypt ciphertext
var decrypted = CryptoJS.DES.decrypt({
ciphertext: CryptoJS.enc.Base64.parse(ciphertext)
}, keyHex, {
mode: CryptoJS.mode.ECB,
//这一步 是来填写 加密时候填充方式padding: CryptoJS.pad.Pkcs7
});
return decrypted.toString(CryptoJS.enc.Utf8);
}
//加密
function encryptStr() {
var strKey = $.trim($('#key').val());
var strMsg = $.trim($('#text1').val());
$('#text2').val(encryptByDES(strMsg, strKey));
}
//解密
function decryptStr() {
var strKey = $.trim($('#key').val());
var ciphertext = $.trim($('#text2').val());
$('#text3').val(decryptByDES(ciphertext, strKey));
}
JS设置DES加密处理
key
abcde12345这个中文!@#!@$#%$#^%(":''")[]=_-
