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Voovan is a java framwork and it not depends on any third-party framework.
package org.voovan.tools;
import org.voovan.tools.log.Logger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* hash 算法类
*
* @author helyho
*
* Voovan Framework.
* WebSite: https://github.com/helyho/Voovan
* Licence: Apache v2 License
*/
public class THash {
/**
* BASE64解密
*
* @param key 待解密字符串
* @return 解密后字符串
*/
public static String decryptBASE64(String key) {
return new String(TBase64.decode(key));
}
/**
* BASE64加密
*
* @param key 待加密字符串
* @return 加密后字符串
*/
public static String encryptBASE64(String key) {
return TBase64.encode(key.getBytes());
}
/**
* MD5加密
* @param str 待加密字符串
* @return 加密结果
*/
public static String encryptMD5(String str){
return digest("MD5", str);
}
/**
* SHA 加密
* @param str 待加密字符串
* @return 加密结果
*/
public static String encryptSHA(String str){
return digest("SHA", str);
}
private static String digest(String code,String str) {
try {
//code 可选 hash 算法
//MD2
//MD5
//SHA-1/SHA
//SHA-256
//SHA-384
//SHA-512
MessageDigest messageDigest = MessageDigest.getInstance(code);
messageDigest.reset();
messageDigest.update(str.getBytes());
byte[] byteArray = messageDigest.digest();
StringBuffer md5StrBuff = new StringBuffer();
for (int i = 0; i < byteArray.length; i++) {
if (Integer.toHexString(0xFF & byteArray[i]).length() == 1)
md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));
else
md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));
}
return md5StrBuff.toString();
} catch (NoSuchAlgorithmException e) {
Logger.error("No such algorithm",e);
return null;
}
}
/**
* Time33算法
* @param source 待加密字符串
* @return 加密结果
*/
public static int hash_time33(String source) {
int hash = 0;
for (int i = 0; i < source.length(); i++) {
hash = hash * 33 + Integer.valueOf(source.charAt(i));
}
return hash;
}
}