Here you can find the source of sha1(String param)
public static byte[] sha1(String param)
//package com.java2s; /*// w w w.j a va 2 s . com * Copyright 2009 Denys Pavlov, Igor Azarnyi * * 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; public class Main { public static byte[] sha1(String param) { MessageDigest SHA = null; try { SHA = MessageDigest.getInstance("SHA-1"); SHA.reset(); SHA.update(param.getBytes("UTF-8")); } catch (Exception e) { System.err.println(e); } return SHA.digest(); } }