- import java.io.IOException;
- import java.security.SecureRandom;
- import javax.crypto.Cipher;
- import javax.crypto.SecretKey;
- import javax.crypto.SecretKeyFactory;
- import javax.crypto.spec.DESKeySpec;
- import sun.misc.BASE64Decoder;
- import sun.misc.BASE64Encoder;
- public class DES {
-
- private byte[] desKey;
-
- public DES(String desKey) {
- this.desKey = desKey.getBytes();
- }
-
- public byte[] desEncrypt(byte[] plainText) throws Exception {
- SecureRandom sr = new SecureRandom();
- byte rawKeyData[] = desKey;
- DESKeySpec dks = new DESKeySpec(rawKeyData);
- SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
- SecretKey key = keyFactory.generateSecret(dks);
- Cipher cipher = Cipher.getInstance("DES");
- cipher.init(Cipher.ENCRYPT_MODE, key, sr);
- byte data[] = plainText;
- byte encryptedData[] = cipher.doFinal(data);
- return encryptedData;
- }
-
- public byte[] desDecrypt(byte[] encryptText) throws Exception {
- SecureRandom sr = new SecureRandom();
- byte rawKeyData[] = desKey;
- DESKeySpec dks = new DESKeySpec(rawKeyData);
- SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
- SecretKey key = keyFactory.generateSecret(dks);
- Cipher cipher = Cipher.getInstance("DES");
- cipher.init(Cipher.DECRYPT_MODE, key, sr);
- byte encryptedData[] = encryptText;
- byte decryptedData[] = cipher.doFinal(encryptedData);
- return decryptedData;
- }
-
- public String encrypt(String input) throws Exception {
- return base64Encode(desEncrypt(input.getBytes()));
- }
-
- public String decrypt(String input) throws Exception {
- byte[] result = base64Decode(input);
- return new String(desDecrypt(result));
- }
-
- public static String base64Encode(byte[] s) {
- if (s == null)
- return null;
- BASE64Encoder b = new sun.misc.BASE64Encoder();
- return b.encode(s);
- }
-
- public static byte[] base64Decode(String s) throws IOException {
- if (s == null)
- return null;
- BASE64Decoder decoder = new BASE64Decoder();
- byte[] b = decoder.decodeBuffer(s);
- return b;
- }
-
- public static void main(String[] args) throws Exception {
- String key = "abcdefgh";
- String input = "a";
- DES crypt = new DES(key);
- System.out.println("Encode:" + crypt.encrypt(input));
- System.out.println("Decode:" + crypt.decrypt(crypt.encrypt(input)));
- }
- }
import java.io.IOException;
import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class DES {
private byte[] desKey;
public DES(String desKey) {
this.desKey = desKey.getBytes();
}
public byte[] desEncrypt(byte[] plainText) throws Exception {
SecureRandom sr = new SecureRandom();
byte rawKeyData[] = desKey;
DESKeySpec dks = new DESKeySpec(rawKeyData);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey key = keyFactory.generateSecret(dks);
Cipher cipher = Cipher.getInstance("DES");
cipher.init(Cipher.ENCRYPT_MODE, key, sr);
byte data[] = plainText;
byte encryptedData[] = cipher.doFinal(data);
return encryptedData;
}
public byte[] desDecrypt(byte[] encryptText) throws Exception {
SecureRandom sr = new SecureRandom();
byte rawKeyData[] = desKey;
DESKeySpec dks = new DESKeySpec(rawKeyData);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey key = keyFactory.generateSecret(dks);
Cipher cipher = Cipher.getInstance("DES");
cipher.init(Cipher.DECRYPT_MODE, key, sr);
byte encryptedData[] = encryptText;
byte decryptedData[] = cipher.doFinal(encryptedData);
return decryptedData;
}
public String encrypt(String input) throws Exception {
return base64Encode(desEncrypt(input.getBytes()));
}
public String decrypt(String input) throws Exception {
byte[] result = base64Decode(input);
return new String(desDecrypt(result));
}
public static String base64Encode(byte[] s) {
if (s == null)
return null;
BASE64Encoder b = new sun.misc.BASE64Encoder();
return b.encode(s);
}
public static byte[] base64Decode(String s) throws IOException {
if (s == null)
return null;
BASE64Decoder decoder = new BASE64Decoder();
byte[] b = decoder.decodeBuffer(s);
return b;
}
public static void main(String[] args) throws Exception {
String key = "abcdefgh";
String input = "a";
DES crypt = new DES(key);
System.out.println("Encode:" + crypt.encrypt(input));
System.out.println("Decode:" + crypt.decrypt(crypt.encrypt(input)));
}
}
php 方法一
- <?php
- class DES1 {
- var $key;
- function DES1($key) {
- $this->key = $key;
- }
- function encrypt($input) {
- $size = mcrypt_get_block_size('des', 'ecb');
- $input = $this->pkcs5_pad($input, $size);
- $key = $this->key;
- $td = mcrypt_module_open('des', '', 'ecb', '');
- $iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
- @mcrypt_generic_init($td, $key, $iv);
- $data = mcrypt_generic($td, $input);
- mcrypt_generic_deinit($td);
- mcrypt_module_close($td);
- $data = base64_encode($data);
- return $data;
- }
- function decrypt($encrypted) {
- $encrypted = base64_decode($encrypted);
- $key =$this->key;
- $td = mcrypt_module_open('des','','ecb','');
-
- $iv = @mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
- $ks = mcrypt_enc_get_key_size($td);
- @mcrypt_generic_init($td, $key, $iv);
-
- $decrypted = mdecrypt_generic($td, $encrypted);
-
- mcrypt_generic_deinit($td);
-
- mcrypt_module_close($td);
- $y=$this->pkcs5_unpad($decrypted);
- return $y;
- }
- function pkcs5_pad ($text, $blocksize) {
- $pad = $blocksize - (strlen($text) % $blocksize);
- return $text . str_repeat(chr($pad), $pad);
- }
- function pkcs5_unpad($text) {
- $pad = ord($text{strlen($text)-1});
- if ($pad > strlen($text))
- return false;
- if (strspn($text, chr($pad), strlen($text) - $pad) != $pad)
- return false;
- return substr($text, 0, -1 * $pad);
- }
- }
- $key = "abcdefgh";
- $input = "a";
- $crypt = new DES1($key);
- echo "Encode:".$crypt->encrypt($input)."<br/>";
- echo "Decode:".$crypt->decrypt($crypt->encrypt($input));
- ?>
<?php
class DES1 {
var $key;
function DES1($key) {
$this->key = $key;
}
function encrypt($input) {
$size = mcrypt_get_block_size('des', 'ecb');
$input = $this->pkcs5_pad($input, $size);
$key = $this->key;
$td = mcrypt_module_open('des', '', 'ecb', '');
$iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
@mcrypt_generic_init($td, $key, $iv);
$data = mcrypt_generic($td, $input);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
$data = base64_encode($data);
return $data;
}
function decrypt($encrypted) {
$encrypted = base64_decode($encrypted);
$key =$this->key;
$td = mcrypt_module_open('des','','ecb','');
//使用MCRYPT_DES算法,cbc模式
$iv = @mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
$ks = mcrypt_enc_get_key_size($td);
@mcrypt_generic_init($td, $key, $iv);
//初始处理
$decrypted = mdecrypt_generic($td, $encrypted);
//解密
mcrypt_generic_deinit($td);
//结束
mcrypt_module_close($td);
$y=$this->pkcs5_unpad($decrypted);
return $y;
}
function pkcs5_pad ($text, $blocksize) {
$pad = $blocksize - (strlen($text) % $blocksize);
return $text . str_repeat(chr($pad), $pad);
}
function pkcs5_unpad($text) {
$pad = ord($text{strlen($text)-1});
if ($pad > strlen($text))
return false;
if (strspn($text, chr($pad), strlen($text) - $pad) != $pad)
return false;
return substr($text, 0, -1 * $pad);
}
}
$key = "abcdefgh";
$input = "a";
$crypt = new DES1($key);
echo "Encode:".$crypt->encrypt($input)."<br/>";
echo "Decode:".$crypt->decrypt($crypt->encrypt($input));
?>
php 方法2
使用phpseclib中的DES
- <?php
- include('DES.php');
-
- $des = new Crypt_DES();
-
- $des->setKey('abcdefgh');
- $plaintext = 'a';
- $jiami = base64_encode($des->encrypt($plaintext));
- echo "Encode:".$jiami."<br/>";
- echo "Decode:".$des->decrypt(base64_decode($jiami));
- ?>