基础加密组件代码,Java代码库,德仔网

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【Java】基础加密组件
作者: / 发布于2011/1/14/ 380
<div><span style="color: #0000ff">package</span><span style="color: #000000"> org.wxws.common.tools;

</span><span style="color: #0000ff">import</span><span style="color: #000000"> java.security.MessageDigest;

</span><span style="color: #0000ff">import</span><span style="color: #000000"> javax.crypto.KeyGenerator;
</span><span style="color: #0000ff">import</span><span style="color: #000000"> javax.crypto.Mac;
</span><span style="color: #0000ff">import</span><span style="color: #000000"> javax.crypto.SecretKey;
</span><span style="color: #0000ff">import</span><span style="color: #000000"> javax.crypto.spec.SecretKeySpec;

</span><span style="color: #0000ff">import</span><span style="color: #000000"> sun.misc.BASE64Decoder;
</span><span style="color: #0000ff">import</span><span style="color: #000000"> sun.misc.BASE64Encoder;

</span><span style="color: #008000">/**</span><span style="color: #008000">
* 基础加密组件
* 
* </span><span style="color: #808080">@author</span><span style="color: #008000"> 梁栋
* </span><span style="color: #808080">@version</span><span style="color: #008000"> 1.0
* </span><span style="color: #808080">@since</span><span style="color: #008000"> 1.0
</span><span style="color: #008000">*/</span><span style="color: #000000">
</span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">abstract</span><span style="color: #000000"> </span><span style="color: #0000ff">class</span><span style="color: #000000"> CoderUtil {
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> </span><span style="color: #0000ff">final</span><span style="color: #000000"> String KEY_SHA </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">"</span><span style="color: #000000">SHA</span><span style="color: #000000">"</span><span style="color: #000000">;
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> </span><span style="color: #0000ff">final</span><span style="color: #000000"> String KEY_MD5 </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">"</span><span style="color: #000000">MD5</span><span style="color: #000000">"</span><span style="color: #000000">;

 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * MAC算法可选以下多种算法
 * 
 * <pre>
 * HmacMD5 
 * HmacSHA1 
 * HmacSHA256 
 * HmacSHA384 
 * HmacSHA512
 * </pre>
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> </span><span style="color: #0000ff">final</span><span style="color: #000000"> String KEY_MAC </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">"</span><span style="color: #000000">HmacMD5</span><span style="color: #000000">"</span><span style="color: #000000">;

 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * BASE64解密
 * 
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> key
 * </span><span style="color: #808080">@return</span><span style="color: #008000">
 * </span><span style="color: #808080">@throws</span><span style="color: #008000"> Exception
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> </span><span style="color: #0000ff">byte</span><span style="color: #000000">[] decryptBASE64(String key) </span><span style="color: #0000ff">throws</span><span style="color: #000000"> Exception {
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> (</span><span style="color: #0000ff">new</span><span style="color: #000000"> BASE64Decoder()).decodeBuffer(key);
 }

 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * BASE64加密
 * 
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> key
 * </span><span style="color: #808080">@return</span><span style="color: #008000">
 * </span><span style="color: #808080">@throws</span><span style="color: #008000"> Exception
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String encryptBASE64(</span><span style="color: #0000ff">byte</span><span style="color: #000000">[] key) </span><span style="color: #0000ff">throws</span><span style="color: #000000"> Exception {
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> (</span><span style="color: #0000ff">new</span><span style="color: #000000"> BASE64Encoder()).encodeBuffer(key);
 }

 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * MD5加密
 * 
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> data
 * </span><span style="color: #808080">@return</span><span style="color: #008000">
 * </span><span style="color: #808080">@throws</span><span style="color: #008000"> Exception
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> </span><span style="color: #0000ff">byte</span><span style="color: #000000">[] encryptMD5(</span><span style="color: #0000ff">byte</span><span style="color: #000000">[] data) </span><span style="color: #0000ff">throws</span><span style="color: #000000"> Exception {

 MessageDigest md5 </span><span style="color: #000000">=</span><span style="color: #000000"> MessageDigest.getInstance(KEY_MD5);
 md5.update(data);

 </span><span style="color: #0000ff">return</span><span style="color: #000000"> md5.digest();

 }

 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * SHA加密
 * 
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> data
 * </span><span style="color: #808080">@return</span><span style="color: #008000">
 * </span><span style="color: #808080">@throws</span><span style="color: #008000"> Exception
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> </span><span style="color: #0000ff">byte</span><span style="color: #000000">[] encryptSHA(</span><span style="color: #0000ff">byte</span><span style="color: #000000">[] data) </span><span style="color: #0000ff">throws</span><span style="color: #000000"> Exception {

 MessageDigest sha </span><span style="color: #000000">=</span><span style="color: #000000"> MessageDigest.getInstance(KEY_SHA);
 sha.update(data);

 </span><span style="color: #0000ff">return</span><span style="color: #000000"> sha.digest();

 }

 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * 初始化HMAC密钥
 * 
 * </span><span style="color: #808080">@return</span><span style="color: #008000">
 * </span><span style="color: #808080">@throws</span><span style="color: #008000"> Exception
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String initMacKey() </span><span style="color: #0000ff">throws</span><span style="color: #000000"> Exception {
 KeyGenerator keyGenerator </span><span style="color: #000000">=</span><span style="color: #000000"> KeyGenerator.getInstance(KEY_MAC);

 SecretKey secretKey </span><span style="color: #000000">=</span><span style="color: #000000"> keyGenerator.generateKey();
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> encryptBASE64(secretKey.getEncoded());
 }

 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * HMAC加密
 * 
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> data
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> key
 * </span><span style="color: #808080">@return</span><span style="color: #008000">
 * </span><span style="color: #808080">@throws</span><span style="color: #008000"> Exception
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> </span><span style="color: #0000ff">byte</span><span style="color: #000000">[] encryptHMAC(</span><span style="color: #0000ff">byte</span><span style="color: #000000">[] data, String key) </span><span style="color: #0000ff">throws</span><span style="color: #000000"> Exception {

 SecretKey secretKey </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> SecretKeySpec(decryptBASE64(key), KEY_MAC);
 Mac mac </span><span style="color: #000000">=</span><span style="color: #000000"> Mac.getInstance(secretKey.getAlgorithm());
 mac.init(secretKey);

 </span><span style="color: #0000ff">return</span><span style="color: #000000"> mac.doFinal(data);

 }

 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> </span><span style="color: #0000ff">void</span><span style="color: #000000"> main(String[] args) </span><span style="color: #0000ff">throws</span><span style="color: #000000"> Exception {
 String inputStr </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">"</span><span style="color: #000000">简单加密</span><span style="color: #000000">"</span><span style="color: #000000">;
 System.err.println(</span><span style="color: #000000">"</span><span style="color: #000000">原文:\n</span><span style="color: #000000">"</span><span style="color: #000000"> </span><span style="color: #000000">+</span><span style="color: #000000"> inputStr);

 </span><span style="color: #0000ff">byte</span><span style="color: #000000">[] inputData </span><span style="color: #000000">=</span><span style="color: #000000"> inputStr.getBytes();
 String code </span><span style="color: #000000">=</span><span style="color: #000000"> CoderUtil.encryptBASE64(inputData);

 System.err.println(</span><span style="color: #000000">"</span><span style="color: #000000">BASE64加密后:\n</span><span style="color: #000000">"</span><span style="color: #000000"> </span><span style="color: #000000">+</span><span style="color: #000000"> code);

 </span><span style="color: #0000ff">byte</span><span style="color: #000000">[] output </span><span style="color: #000000">=</span><span style="color: #000000"> CoderUtil.decryptBASE64(code);

 String outputStr </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> String(output);

 System.err.println(</span><span style="color: #000000">"</span><span style="color: #000000">BASE64解密后:\n</span><span style="color: #000000">"</span><span style="color: #000000"> </span><span style="color: #000000">+</span><span style="color: #000000"> outputStr);

 }
}</span>
</div>
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