Java SHA1 sha1(String data)

Description

sha

License

Open Source License

Declaration

public static String sha1(String data) throws NoSuchAlgorithmException 

Method Source Code

//package com.java2s;
/*/* ww  w. jav  a 2 s  .c  o  m*/
 * Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software;Designed and Developed mainly by many Chinese 
 * opensource volunteers. you can redistribute it and/or modify it under the 
 * terms of the GNU General Public License version 2 only, as published by the
 * Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Any questions about this component can be directed to it's project Web address 
 * https://code.google.com/p/opencloudb/.
 *
 */

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Main {
    public static String sha1(String data) throws NoSuchAlgorithmException {
        MessageDigest md = MessageDigest.getInstance("SHA1");
        md.update(data.getBytes());
        StringBuffer buf = new StringBuffer();
        byte[] bits = md.digest();
        for (int i = 0; i < bits.length; i++) {
            int a = bits[i];
            if (a < 0)
                a += 256;
            if (a < 16)
                buf.append("0");
            buf.append(Integer.toHexString(a));
        }
        return buf.toString();
    }

    public static String toString(byte[] bytes) {
        if (bytes == null || bytes.length == 0) {
            return "";
        }
        StringBuffer buffer = new StringBuffer();
        for (byte byt : bytes) {
            buffer.append((char) byt);
        }
        return buffer.toString();
    }
}

Related

1. SHA1(final String text)
2. sha1(final String todigest)
3. SHA1(InputStream in)
4. SHA1(MessageDigest messageDigest, String... texts)
5. sha1(Object object)
6. sha1(String data)
7. sha1(String data)
8. sha1(String data)
9. SHA1(String decript)