encrypt.java

来自「MM7彩信对接网关示例」· Java 代码 · 共 53 行

/*
 * Created on 2004-1-8
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package com.rainbow.util.tools;

import java.security.MessageDigest;

/**
 * @author liu_hongshan
 *
 * 各种加密算法，目前只实现了MD5加密算法。还缺少Des，3Des等重要的加密算法。
 */

public class Encrypt {
	//MD5加密算法
	public static String md5( String str )
	{
		try
		{
			MessageDigest md = MessageDigest.getInstance( "MD5" );
			md.update( str.getBytes() );

			byte[] b = md.digest();
			StringBuffer sb = new StringBuffer();
			for(int i=0; i<b.length; i++)
			{
				int v = (int)b[i];
				v = v < 0 ? 0x100+v : v;
				String cc = Integer.toHexString(v);
				if( cc.length()==1 )
					sb.append( '0' );
				sb.append( cc );
			}

			return sb.toString();
		}
		catch( Exception e ) {
			e.printStackTrace();
		}
		return "";
	}
//	public static String haha(){
//		String haha = "aaaaaa";
//		DESedeKeySpec keyspec = new DESedeKeySpec(haha.getBytes());
//		SecretKeyFactory keyfactory = SecretKeyFactory.getInstance(keyAlg);
//		SecretKey secretKey = keyfactory.generateSecret(keyspec);
//		return "";
//	}
}