hashsha1string.java

用HASH加密字符传

/*
 * Created on 2007-6-29
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package com.ai.get24;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import sun.misc.BASE64Encoder;
/**
 * @author Vincent.Zhang
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class HashSHA1String {

	public String hashSHA1String(String dataToHash) {
		String tmp = null;
		String salt = "abcedefghijklmnopqrstuvwxyz";
		try {
			//One-way hash      
			MessageDigest md = MessageDigest.getInstance("SHA1");
			md.update(salt.getBytes());
			byte[] byteTmpe = md.digest(dataToHash.getBytes());
			//base 64 encoding, using sun's internal lib        
			BASE64Encoder b64encoder = new BASE64Encoder();
			tmp = b64encoder.encode(byteTmpe);
		} catch (NoSuchAlgorithmException e) {
			//			silence and return null
		}
		return tmp;
	}
}