遗失的笔记本
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遗失的笔记本
编程

dea_des ecb 模式 java php c#实现

1.java 

<br />
	package com.egame.fee.sdk.pc.util;
</p>

<p>
	import java.io.IOException;<br />
	import java.io.UnsupportedEncodingException;<br />
	import java.security.InvalidKeyException;<br />
	import java.security.NoSuchAlgorithmException;<br />
	import java.security.SecureRandom;<br />
	import java.security.spec.InvalidKeySpecException;
</p>

<p>
	import javax.crypto.BadPaddingException;<br />
	import javax.crypto.Cipher;<br />
	import javax.crypto.IllegalBlockSizeException;<br />
	import javax.crypto.NoSuchPaddingException;<br />
	import javax.crypto.SecretKey;<br />
	import javax.crypto.SecretKeyFactory;<br />
	import javax.crypto.spec.DESKeySpec;
</p>

<p>
	import sun.misc.BASE64Decoder;<br />
	import sun.misc.BASE64Encoder;
</p>

<p>
	public class SecretUtilTools {
</p>

<p>
	public static String encryptForDES(String souce, String key) throws InvalidKeyException,<br />
	NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException,<br />
	IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException {<br />
	// DES算法要求有一个可信任的随机数源<br />
	SecureRandom sr = new SecureRandom();<br />
	// 从原始密匙数据创建DESKeySpec对象<br />
	DESKeySpec dks = new DESKeySpec(key.getBytes(&quot;UTF-8&quot;));<br />
	// 创建一个密匙工厂，然后用它把DESKeySpec转换成 一个SecretKey对象<br />
	SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(&quot;DES&quot;);<br />
	SecretKey key1 = keyFactory.generateSecret(dks);<br />
	// Cipher对象实际完成加密操作<br />
	Cipher cipher = Cipher.getInstance(&quot;DES&quot;);<br />
	// 用密匙初始化Cipher对象<br />
	cipher.init(Cipher.ENCRYPT_MODE, key1, sr);<br />
	// 现在，获取数据并加密<br />
	byte encryptedData[] = cipher.doFinal(souce.getBytes(&quot;UTF-8&quot;));<br />
	// 通过BASE64位编码成字符创形式<br />
	String base64Str = new BASE64Encoder().encode(encryptedData);
</p>

<p>
	return base64Str;<br />
	}
</p>

<p>
	public static String decryptForDES(String souce, String key) throws InvalidKeyException,<br />
	NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, IOException,<br />
	IllegalBlockSizeException, BadPaddingException {<br />
	// DES算法要求有一个可信任的随机数源<br />
	SecureRandom sr = new SecureRandom();<br />
	// 从原始密匙数据创建DESKeySpec对象<br />
	DESKeySpec dks = new DESKeySpec(key.getBytes());<br />
	// 创建一个密匙工厂，然后用它把DESKeySpec转换成 一个SecretKey对象<br />
	SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(&quot;DES&quot;);<br />
	SecretKey key1 = keyFactory.generateSecret(dks);<br />
	// Cipher对象实际完成加密操作<br />
	Cipher cipher = Cipher.getInstance(&quot;DES&quot;);<br />
	// 用密匙初始化Cipher对象<br />
	cipher.init(Cipher.DECRYPT_MODE, key1, sr);<br />
	// 将加密报文用BASE64算法转化为字节数组<br />
	byte[] encryptedData = new BASE64Decoder().decodeBuffer(souce);<br />
	// 用DES算法解密报文<br />
	byte decryptedData[] = cipher.doFinal(encryptedData);<br />
	return new String(decryptedData,&quot;UTF-8&quot;);<br />
	}
</p>

<p>
	}<br />

2.php 

<br />
	&lt;？php
</p>

<p>
	class SecretUtilTools<br />
	{<br />
	//加密算法<br />
	function encryptForDES($input,$key)<br />
	{<br />
	$size = mcrypt_get_block_size(&#39;des&#39;,&#39;ecb&#39;);<br />
	$input = $this-&amp;gt;pkcs5_pad($input, $size);<br />
	$td = mcrypt_module_open(&#39;des&#39;, &#39;&#39;, &#39;ecb&#39;, &#39;&#39;);<br />
	$iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);<br />
	@mcrypt_generic_init($td, $key, $iv);<br />
	$data = mcrypt_generic($td, $input);<br />
	mcrypt_generic_deinit($td);<br />
	mcrypt_module_close($td);<br />
	$data = base64_encode($data);<br />
	return $data;<br />
	}<br />
	//解密算法<br />
	function decryptForDES($encrypted,$key)<br />
	{<br />
	$encrypted = base64_decode($encrypted);<br />
	$td = mcrypt_module_open(&#39;des&#39;,&#39;&#39;,&#39;ecb&#39;,&#39;&#39;);<br />
	//使用MCRYPT_DES算法,cbc模式<br />
	$iv = @mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);<br />
	$ks = mcrypt_enc_get_key_size($td);<br />
	@mcrypt_generic_init($td, $key, $iv);<br />
	//初始处理<br />
	$decrypted = mdecrypt_generic($td, $encrypted);<br />
	//解密<br />
	mcrypt_generic_deinit($td);<br />
	//结束<br />
	mcrypt_module_close($td);<br />
	$y=$this-&amp;gt;pkcs5_unpad($decrypted);<br />
	return $y;<br />
	}
</p>

<p>
	function pkcs5_pad ($text, $blocksize)<br />
	{<br />
	$pad = $blocksize - (strlen($text) % $blocksize);<br />
	return $text . str_repeat(chr($pad), $pad);<br />
	}
</p>

<p>
	function pkcs5_unpad($text)<br />
	{<br />
	$pad = ord($text{strlen($text)-1});<br />
	if ($pad &amp;gt; strlen($text))<br />
	{<br />
	return false;<br />
	}<br />
	if (strspn($text, chr($pad), strlen($text) - $pad) != $pad)<br />
	{<br />
	return false;<br />
	}<br />
	return substr($text, 0, -1 * $pad);<br />
	}<br />
	}<br />
	？&gt;

3.c# 

<br />
	using System;<br />
	using System.IO;<br />
	using System.Security.Cryptography;<br />
	using System.Text;<br />
	using System.Threading;
</p>

<p>
	public class SecretUtilTools<br />
	{<br />
	public string encryptForDES(string message, string key)<br />
	{<br />
	using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())<br />
	{<br />
	byte[] inputByteArray = Encoding.UTF8.GetBytes(message);<br />
	des.Key = UTF8Encoding.UTF8.GetBytes(key);<br />
	des.IV = UTF8Encoding.UTF8.GetBytes(key);<br />
	des.Mode = System.Security.Cryptography.CipherMode.ECB;<br />
	System.IO.MemoryStream ms = new System.IO.MemoryStream();<br />
	using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write))<br />
	{<br />
	cs.Write(inputByteArray, 0, inputByteArray.Length);<br />
	cs.FlushFinalBlock();<br />
	cs.Close();<br />
	}<br />
	string str = Convert.ToBase64String(ms.ToArray());<br />
	ms.Close();<br />
	return str;<br />
	}<br />
	}
</p>

<p>
	public string decryptForDES(string message, string key)<br />
	{<br />
	byte[] inputByteArray = Convert.FromBase64String(message);<br />
	using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())<br />
	{<br />
	des.Key = UTF8Encoding.UTF8.GetBytes(key);<br />
	des.IV = UTF8Encoding.UTF8.GetBytes(key);<br />
	des.Mode = System.Security.Cryptography.CipherMode.ECB;<br />
	System.IO.MemoryStream ms = new System.IO.MemoryStream();<br />
	using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write))<br />
	{<br />
	cs.Write(inputByteArray, 0, inputByteArray.Length);<br />
	cs.FlushFinalBlock();<br />
	cs.Close();<br />
	}<br />
	string str = Encoding.UTF8.GetString(ms.ToArray());<br />
	ms.Close();<br />
	return str;<br />
	}<br />
	}
</p>

<p>
	}<br />

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