php中有一个扩展可以支持DES的加密算法，是：extension=php_mcrypt.dll
在配置文件中将这个扩展打开还不能够在windows环境下使用
需要将PHP文件夹下的 libmcrypt.dll 拷贝到系统的 system32 目录下，这是通过phpinfo可以查看到mcrypt表示这个模块可以正常试用了。
下面是PHP中使用DES加密解密的一个例子：
//$input - stuff to decrypt
//$key - the secret key to use
function do_mencrypt($input, $key)
{
$input = str_replace(""n", "", $input)
$input = str_replace(""t", "", $input)
$input = str_replace(""r", "", $input)
$key = substr(md5($key), 0, 24)
$td = mcrypt_module_open('tripledes', '', 'ecb', '')
$iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND)
mcrypt_generic_init($td, $key, $iv)
$encrypted_data = mcrypt_generic($td, $input)
mcrypt_generic_deinit($td)
mcrypt_module_close($td)
return trim(chop(base64_encode($encrypted_data)))
}
//$input - stuff to decrypt
//$key - the secret key to use
function do_mdecrypt($input, $key)
{
$input = str_replace(""n", "", $input)
$input = str_replace(""t", "", $input)
$input = str_replace(""r", "", $input)
$input = trim(chop(base64_decode($input)))
$td = mcrypt_module_open('tripledes', '', 'ecb', '')
$key = substr(md5($key), 0, 24)
$iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND)
mcrypt_generic_init($td, $key, $iv)
$decrypted_data = mdecrypt_generic($td, $input)
mcrypt_generic_deinit($td)
mcrypt_module_close($td)
return trim(chop($decrypted_data))
}
例直接拿用package com.nnff.des
import java.security.Security
import javax.crypto.Cipher
import javax.crypto.SecretKey
import javax.crypto.spec.SecretKeySpec
/*字符串 DESede(3DES) 加密
* ECB模式/使用PKCS7式填充足位,目前给密钥192位
* 3DES（即Triple DES）DES向AES渡加密算（1999NIST3-DES指定渡
* 加密标准）DES更安全变形DES基本模块通组合组设计组加
* 密算其具体实现：设Ek()Dk()代表DES算加密解密程K代表DES算使用
* 密钥P代表明文C代表密表
* 3DES加密程：C=Ek3(Dk2(Ek1(P)))
* 3DES解密程：P=Dk1((EK2(Dk3(C)))
* */
public class ThreeDes {
/**
* @param argsjava调用sun公司提供3DES加密解密算需要使
* 用$JAVA_HOME/jre/lib/目录4jar包：
*jce.jar
*security/US_export_policy.jar
*security/local_policy.jar
*ext/sunjce_provider.jar
*/
private static final String Algorithm = "DESede"//定义加密算,用 DES,DESede,Blowfish
//keybyte加密密钥度24字节
//src加密数据缓冲区（源）
public static byte[] encryptMode(byte[] keybyte,byte[] src){
try {
//密钥
SecretKey deskey = new SecretKeySpec(keybyte, Algorithm)
//加密
Cipher c1 = Cipher.getInstance(Algorithm)
c1.init(Cipher.ENCRYPT_MODE, deskey)
return c1.doFinal(src)//单面加密或解密
} catch (java.security.NoSuchAlgorithmException e1) {
// TODO: handle exception
e1.printStackTrace()
}catch(javax.crypto.NoSuchPaddingException e2){
e2.printStackTrace()
}catch(java.lang.Exception e3){
e3.printStackTrace()
}
return null
}
//keybyte加密密钥度24字节
//src加密缓冲区
public static byte[] decryptMode(byte[] keybyte,byte[] src){
try {
//密钥
SecretKey deskey = new SecretKeySpec(keybyte, Algorithm)
//解密
Cipher c1 = Cipher.getInstance(Algorithm)
c1.init(Cipher.DECRYPT_MODE, deskey)
return c1.doFinal(src)
} catch (java.security.NoSuchAlgorithmException e1) {
// TODO: handle exception
e1.printStackTrace()
}catch(javax.crypto.NoSuchPaddingException e2){
e2.printStackTrace()
}catch(java.lang.Exception e3){
e3.printStackTrace()
}
return null
}
//转换十六进制字符串
public static String byte2Hex(byte[] b){
String hs=""
String stmp=""
for(int n=0n<b.lengthn++){
stmp = (java.lang.Integer.toHexString(b[n]&0XFF))
if(stmp.length()==1){
hs = hs + "0" + stmp
}else{
hs = hs + stmp
}
if(n<b.length-1)hs=hs+":"
}
return hs.toUpperCase()
}
public static void main(String[] args) {
// TODO Auto-generated method stub
//添加新安全算,用JCE要添加进
Security.addProvider(new com.sun.crypto.provider.SunJCE())
final byte[] keyBytes = {0x11, 0x22, 0x4F, 0x58,
(byte)0x88, 0x10, 0x40, 0x38, 0x28, 0x25, 0x79, 0x51,
(byte)0xCB,
(byte)0xDD, 0x55, 0x66, 0x77, 0x29, 0x74,
(byte)0x98, 0x30, 0x40, 0x36,
(byte)0xE2
}//24字节密钥
String szSrc = "This is a 3DES test. 测试"
System.out.println("加密前字符串:" + szSrc)
byte[] encoded = encryptMode(keyBytes,szSrc.getBytes())
System.out.println("加密字符串:" + new String(encoded))
byte[] srcBytes = decryptMode(keyBytes,encoded)
System.out.println("解密字符串:" + (new String(srcBytes)))
}
}
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