Java tutorial
//package com.java2s; /* * Copyright (C) 2015 iChano incorporation's Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class Main { public static String sha1(String strSrc) { MessageDigest md = null; String strDes = ""; byte[] bt = strSrc.getBytes(); try { md = MessageDigest.getInstance("SHA-1"); md.update(bt); byte[] encryptStr = md.digest(); String tmp = null; for (int i = 0; i < encryptStr.length; i++) { tmp = (Integer.toHexString(encryptStr[i] & 0xFF)); if (tmp.length() == 1) { strDes += "0"; } strDes += tmp; } } catch (NoSuchAlgorithmException e) { System.out.println("Invalid algorithm."); return null; } return strDes; } }