Java Digest digest(String name, String source)

Description

digest

License

Apache License

Declaration

private static String digest(String name, String source) throws NoSuchAlgorithmException 

Method Source Code

//package com.java2s;
/*//from www. j  av  a 2  s.com
 * Copyright (c) 2016 yunmle.com(????????).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 */

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

public class Main {
    public static final char[] DIGITS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e',
            'f' };

    private static String digest(String name, String source) throws NoSuchAlgorithmException {
        if (source != null) {
            final MessageDigest md = MessageDigest.getInstance(name);
            md.update(source.getBytes());
            return toHexString(md.digest());
        }
        return null;
    }

    private static String digest(String name, byte[] bytes) throws NoSuchAlgorithmException {
        if (bytes != null) {
            final MessageDigest md = MessageDigest.getInstance(name);
            md.update(bytes);
            return toHexString(md.digest());
        }
        return null;
    }

    public static String toHexString(final byte[] bs) {
        final int len;
        if (bs != null && (len = bs.length) != 0) {
            final char[] cs = new char[len << 1];
            final char[] myDigits = DIGITS;
            byte b;
            for (int i = 0, j = 0; i < len; i++) {
                cs[j++] = myDigits[((b = bs[i]) >>> 4) & 0xF];
                cs[j++] = myDigits[b & 0xF];
            }
            return String.valueOf(cs);
        }
        return null;
    }
}

Related

1. digest(String ha1, String ha2, String nonce)
2. digest(String input, Charset charset)
3. digest(String input, String algorithm, String encoding)
4. digest(String key)
5. digest(String message, byte[] salt)
6. digest(String orgin, String algorithm)
7. digest(String password)
8. digest(String plain, String algorithm)
9. digest(String planeText)