Java MD5 String md5(String input)

Description

md

License

Apache License

Declaration

public static String md5(String input) 

Method Source Code

//package com.java2s;
/*/*from w  ww .  j  av  a 2s .co  m*/
 * Copyright 2002-2015 the original author or authors.
 *
 * 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.
 */

public class Main {
    public static String md5(String input) {
        return hash(input, "MD5");
    }

    private static String hash(String input, String algorithm) {
        try {
            java.security.MessageDigest md = java.security.MessageDigest.getInstance(algorithm);
            byte[] array = md.digest(input.getBytes());
            StringBuffer sb = new StringBuffer();
            for (int i = 0; i < array.length; ++i) {
                sb.append(Integer.toHexString((array[i] & 0xFF) | 0x100).substring(1, 3));
            }
            return sb.toString();
        } catch (Exception e) {
            //ignore
        }
        throw new IllegalArgumentException("The input " + input + " or algorithm " + algorithm + " is illegal");
    }
}

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