Java加密工具類
/*
- Licensed to the Apache Software Foundation (ASF) under one
- or more contributor license agreements. See the NOTICE file
- distributed with this work for additional information
- regarding copyright ownership. The ASF licenses this file
- to you 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. */
package org.apache.ftpserver.util;
import java.security.MessageDigest; import java.security.NoSuchAlgorithmException;
/**
- <strong>Internal class, do not use directly.</strong>
- String encryption utility methods. *
@author <a href=" MINA Project</a> */ public class EncryptUtils {
/**
Encrypt byte array. */ public final static byte[] encrypt(byte[] source, String algorithm)
throws NoSuchAlgorithmException {MessageDigest md = MessageDigest.getInstance(algorithm); md.reset(); md.update(source); return md.digest(); }
/**
Encrypt string */ public final static String encrypt(String source, String algorithm)
throws NoSuchAlgorithmException {byte[] resByteArray = encrypt(source.getBytes(), algorithm); return StringUtils.toHexString(resByteArray); }
/**
Encrypt string using MD5 algorithm */ public final static String encryptMD5(String source) { if (source == null) {
source = "";}
String result = ""; try {
result = encrypt(source, "MD5");} catch (NoSuchAlgorithmException ex) {
// this should never happen throw new RuntimeException(ex);} return result; }
/**
Encrypt string using SHA algorithm */ public final static String encryptSHA(String source) { if (source == null) {
source = "";}
String result = ""; try {
result = encrypt(source, "SHA");} catch (NoSuchAlgorithmException ex) {
// this should never happen throw new RuntimeException(ex);} return result; }
}</pre>