SHA1

SHA1

package com.terrynow.common;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Locale;

/**
 * @author Terry E-mail: yaoxinghuo at 126 dot com
 * @date Aug 19, 2013 9:54:05 AM
 */
public class SHA1 {
  public static String sha1(String inStr) {
		MessageDigest md = null;
		String outStr = null;
		try {
			md = MessageDigest.getInstance("SHA-1"); // 选择SHA-1，也可以选择MD5
			byte[] digest = md.digest(inStr.getBytes()); // 返回的是byet[]，要转化为String存储比较方便
			outStr = bytetoString(digest);
		} catch (NoSuchAlgorithmException nsae) {
			nsae.printStackTrace();
		}
		return outStr;
	}

	public static String bytetoString(byte[] digest) {
		String str = "";
		String tempStr = "";

		for (int i = 1; i < digest.length; i++) {
			tempStr = (Integer.toHexString(digest[i] & 0xff));
			if (tempStr.length() == 1) {
				str = str + "0" + tempStr;
			} else {
				str = str + tempStr;
			}
		}
		return str.toLowerCase(Locale.ENGLISH);
	}
	
	public static void main(String[] args) {
		System.out.println(sha1("123456"));
	}
}