Here you can find the source of sha1Hash(final String tohash)
public static String sha1Hash(final String tohash)
//package com.java2s; /**//ww w.j av a2 s . c o m * $URL$ * $Id$ * * Copyright (c) 2010 The Sakai Foundation * * Licensed under the Educational Community 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.opensource.org/licenses/ECL-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.io.UnsupportedEncodingException; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class Main { private static final char[] TOHEX = "0123456789abcdef".toCharArray(); public static String sha1Hash(final String tohash) { byte[] b = null; try { b = tohash.getBytes("UTF-8"); MessageDigest sha1 = MessageDigest.getInstance("SHA-1"); b = sha1.digest(b); } catch (UnsupportedEncodingException e) { throw new Error(e); } catch (NoSuchAlgorithmException e) { throw new Error(e); } return byteToHex(b); } public static String byteToHex(final byte[] base) { if (base != null) { char[] c = new char[base.length * 2]; int i = 0; for (byte b : base) { int j = b; j = j + 128; c[i++] = TOHEX[j / 0x10]; c[i++] = TOHEX[j % 0x10]; } return new String(c); } else { return null; } } }