AES encryption mode and fill mode: There are other
Algorithm / mode / padding 16 bytes less than the length of the encrypted data encrypted 16-byte length AES / CBC / NoPadding 16 does not support the AES / the CBC / 32 16 PKCS5Padding the AES / the CBC / 32 16 ISO10126Padding the AES / the CFB / 16 original data length NoPadding the AES / the CFB / 32 16 PKCS5Padding the AES / the CFB / 32 16 ISO10126Padding the AES / an ECB / NoPadding 16 does not support the AES / an ECB / 32 16 PKCS5Padding the AES / an ECB / 32 16 ISO10126Padding the AES / OFB / 16 original data length NoPadding the AES / OFB / 32 16 PKCS5Padding AES/OFB/ISO10126Padding 32 16 AES/PCBC/NoPadding 16 不支持 AES/PCBC/PKCS5Padding 32 16 AES/PCBC/ISO10126Padding 32 16
More about encryption mode content: http: //blog.sina.com.cn/s/blog_679daa6b0100zmpp.html
PHP AES encryption filled only ZeroPadding (zero padding - since the data length is not an integer multiple of 16 would need to be filled), and Java is not
Have filled this mode, only the cup to write a, that Java fill patterns to use NoPadding (not filled with content)
Java-side code:
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
public class Encryption
{
public static void main(String args[]) throws Exception {
System.out.println(encrypt());
System.out.println(desEncrypt());
}
public static String encrypt() throws Exception {
try {
String data = "Test String";
String key = "1234567812345678";
String iv = "1234567812345678";
Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
int blockSize = cipher.getBlockSize();
byte[] dataBytes = data.getBytes();
int plaintextLength = dataBytes.length;
if (plaintextLength % blockSize != 0) {
plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
}
byte[] plaintext = new byte[plaintextLength];
System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);
SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
byte[] encrypted = cipher.doFinal(plaintext);
return new sun.misc.BASE64Encoder().encode(encrypted);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
public static String desEncrypt() throws Exception {
try
{
String data = "2fbwW9+8vPId2/foafZq6Q==";
String key = "1234567812345678";
String iv = "1234567812345678";
byte[] encrypted1 = new BASE64Decoder().decodeBuffer(data);
Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec);
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original);
return originalString;
}
catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
Java fill pattern is NoPadding, written up with their own zero-filled content;
php：
<?php
$privateKey = "1234567812345678";
$iv = "1234567812345678";
$data = "Test String";
//加密
$encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $privateKey, $data, MCRYPT_MODE_CBC, $iv);
echo(base64_encode($encrypted));
echo '<br/>';
//解密
$encryptedData = base64_decode("2fbwW9+8vPId2/foafZq6Q==");
$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $privateKey, $encryptedData, MCRYPT_MODE_CBC, $iv);
echo($decrypted);
?>
C # favorite language
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Cryptography;
namespace pda_demo
{
class Program
{
static void Main(string[] args)
{
String encryptData = Program.Encrypt("Test String", "1234567812345678", "1234567812345678");
Console.WriteLine(encryptData);
String decryptData = Program.Decrypt("2fbwW9+8vPId2/foafZq6Q==", "1234567812345678", "1234567812345678");
Console.WriteLine(decryptData);
Console.Read();
}
public static string Encrypt(string toEncrypt, string key, string iv)
{
byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key);
byte[] ivArray = UTF8Encoding.UTF8.GetBytes(iv);
byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);
RijndaelManaged rDel = new RijndaelManaged();
rDel.Key = keyArray;
rDel.IV = ivArray;
rDel.Mode = CipherMode.CBC;
rDel.Padding = PaddingMode.Zeros;
ICryptoTransform cTransform = rDel.CreateEncryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}
public static string Decrypt(string toDecrypt, string key, string iv)
{
byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key);
byte[] ivArray = UTF8Encoding.UTF8.GetBytes(iv);
byte[] toEncryptArray = Convert.FromBase64String(toDecrypt);
RijndaelManaged rDel = new RijndaelManaged();
rDel.Key = keyArray;
rDel.IV = ivArray;
rDel.Mode = CipherMode.CBC;
rDel.Padding = PaddingMode.Zeros;
ICryptoTransform cTransform = rDel.CreateDecryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return UTF8Encoding.UTF8.GetString(resultArray);
}
}
}
js：
<script src="aes.js"></script>
<script src="pad-zeropadding.js"></script>
<script>
var data = "Test String";
var key = CryptoJS.enc.Latin1.parse('1234567812345678');
var iv = CryptoJS.enc.Latin1.parse('1234567812345678');
//加密
var encrypted = CryptoJS.AES.encrypt(data,key,{iv:iv,mode:CryptoJS.mode.CBC,padding:CryptoJS.pad.ZeroPadding});
document.write(encrypted.ciphertext);
document.write('<br/>');
document.write(encrypted.key);
document.write('<br/>');
document.write(encrypted.iv);
document.write('<br/>');
document.write(encrypted.salt);
document.write('<br/>');
document.write(encrypted);
document.write('<br/>');
//解密
var decrypted = CryptoJS.AES.decrypt(encrypted,key,{iv:iv,padding:CryptoJS.pad.ZeroPadding});
console.log(decrypted.toString(CryptoJS.enc.Utf8));
</script>
java zero padding operation:
public static String paddingZero(int num, int length) {
String s = "" + num;
while(s.length()<length) {
s = "0"+s;
}
return s;
}
private final int ORDOR_LEN = 4;