java php DES 加密解密[转摘]
Java代码[*]
import java.io.IOException;
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import java.security.SecureRandom;
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import javax.crypto.Cipher;
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import javax.crypto.SecretKey;
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import javax.crypto.SecretKeyFactory;
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import javax.crypto.spec.DESKeySpec;
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import sun.misc.BASE64Decoder;
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import sun.misc.BASE64Encoder;
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public class DES {
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private byte[] desKey;
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public DES(String desKey) {
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this.desKey = desKey.getBytes();
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}
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public byte[] desEncrypt(byte[] plainText) throws Exception {
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SecureRandom sr = new SecureRandom();
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byte rawKeyData[] = desKey;
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DESKeySpec dks = new DESKeySpec(rawKeyData);
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SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
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SecretKey key = keyFactory.generateSecret(dks);
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Cipher cipher = Cipher.getInstance("DES");
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cipher.init(Cipher.ENCRYPT_MODE, key, sr);
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byte data[] = plainText;
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byte encryptedData[] = cipher.doFinal(data);
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return encryptedData;
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}
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public byte[] desDecrypt(byte[] encryptText) throws Exception {
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SecureRandom sr = new SecureRandom();
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byte rawKeyData[] = desKey;
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DESKeySpec dks = new DESKeySpec(rawKeyData);
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SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
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SecretKey key = keyFactory.generateSecret(dks);
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Cipher cipher = Cipher.getInstance("DES");
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cipher.init(Cipher.DECRYPT_MODE, key, sr);
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byte encryptedData[] = encryptText;
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byte decryptedData[] = cipher.doFinal(encryptedData);
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return decryptedData;
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}
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public String encrypt(String input) throws Exception {
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return base64Encode(desEncrypt(input.getBytes()));
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}
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public String decrypt(String input) throws Exception {
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byte[] result = base64Decode(input);
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return new String(desDecrypt(result));
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}
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public static String base64Encode(byte[] s) {
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if (s == null)
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return null;
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BASE64Encoder b = new sun.misc.BASE64Encoder();
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return b.encode(s);
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}
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public static byte[] base64Decode(String s) throws IOException {
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if (s == null)
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return null;
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BASE64Decoder decoder = new BASE64Decoder();
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byte[] b = decoder.decodeBuffer(s);
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return b;
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}
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public static void main(String[] args) throws Exception {
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String key = "abcdefgh";
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String input = "a";
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DES crypt = new DES(key);
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System.out.println("Encode:" + crypt.encrypt(input));
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System.out.println("Decode:" + crypt.decrypt(crypt.encrypt(input)));
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}
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}
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代码
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<?php
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class DES1 {
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var $key;
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function DES1($key) {
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$this->key = $key;
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}
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function encrypt($input) {
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$size = mcrypt_get_block_size('des', 'ecb');
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$input = $this->pkcs5_pad($input, $size);
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$key = $this->key;
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$td = mcrypt_module_open('des', '', 'ecb', '');
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$iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
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@mcrypt_generic_init($td, $key, $iv);
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$data = mcrypt_generic($td, $input);
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mcrypt_generic_deinit($td);
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mcrypt_module_close($td);
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$data = base64_encode($data);
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return $data;
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}
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function decrypt($encrypted) {
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$encrypted = base64_decode($encrypted);
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$key =$this->key;
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$td = mcrypt_module_open('des','','ecb','');
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//使用MCRYPT_DES算法,cbc模式
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$iv = @mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
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$ks = mcrypt_enc_get_key_size($td);
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@mcrypt_generic_init($td, $key, $iv);
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//初始处理
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$decrypted = mdecrypt_generic($td, $encrypted);
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//解密
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mcrypt_generic_deinit($td);
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//结束
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mcrypt_module_close($td);
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$y=$this->pkcs5_unpad($decrypted);
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return $y;
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}
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function pkcs5_pad ($text, $blocksize) {
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$pad = $blocksize - (strlen($text) % $blocksize);
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return $text . str_repeat(chr($pad), $pad);
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}
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function pkcs5_unpad($text) {
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$pad = ord($text{strlen($text)-1});
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if ($pad > strlen($text))
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return false;
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if (strspn($text, chr($pad), strlen($text) - $pad) != $pad)
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return false;
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return substr($text, 0, -1 * $pad);
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}
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}
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$key = "abcdefgh";
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$input = "a";
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$crypt = new DES1($key);
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echo "Encode:".$crypt->encrypt($input)."<br/>";
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echo "Decode:".$crypt->decrypt($crypt->encrypt($input));
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?>
<?php
class DES1 {
var $key;
functionDES1($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($input));
?>
php 方法2
使用phpseclib中的DES
Php代码
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<?php
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include('DES.php');
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$des = new Crypt_DES();
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$des->setKey('abcdefgh');
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$plaintext = 'a';
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$jiami = base64_encode($des->encrypt($plaintext));
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echo "Encode:".$jiami."<br/>";
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echo "Decode:".$des->decrypt(base64_decode($jiami));
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?>
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