工具类密码加密

MD5密码加密实现

最新推荐文章于 2023-06-25 11:55:46 发布

houzhanwublog

最新推荐文章于 2023-06-25 11:55:46 发布

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CC 4.0 BY-SA版权

本文为博主原创文章，未经博主允许不得转载。

本文链接：https://blog.youkuaiyun.com/qq_27404929/article/details/53538276

本文介绍了一种使用MD5算法进行密码加密的方法，并提供了完整的Java实现代码。文章详细解释了如何通过MessageDigest类来生成MD5哈希值，以及如何将字节数组转换为十六进制字符串。

public class PasswordDigester {

private static Logger logger = Logger.getLogger(PasswordDigester.class);

private static final String ALGORITHM_MD5 = "MD5";

/**
* Encrypt the password with MD5
*
* @param pass
* the password to encryption
* @return encryption string
*/
public static String getPassMD5(String pass) {
String keys = null;
try {
MessageDigest md = MessageDigest.getInstance(ALGORITHM_MD5);
if (pass == null) {
pass = "";
}
byte[] bPass = pass.getBytes("UTF-8");
md.update(bPass);
// keys = new String(md.digest(), "GBK");
keys = bytesToHexString(md.digest());
} catch (NoSuchAlgorithmException aex) {
logger.error("there is no " + ALGORITHM_MD5 + " Algorithm!");
} catch (java.io.UnsupportedEncodingException uex) {
logger.error("can not encode the password - " + uex.getMessage());
}
return keys;
}

/**
* 将beye[]转换为十六进制字符串
*
* @param bArray
* @return
*/
public static final String bytesToHexString(byte[] bArray) {
StringBuffer sb = new StringBuffer(bArray.length);
String sTemp;
for (int i = 0; i < bArray.length; i++) {
sTemp = Integer.toHexString(0xFF & bArray[i]);
if (sTemp.length() < 2) {
sb.append(0);
}
sb.append(sTemp.toUpperCase());
}
return sb.toString();
}
}