001/*
002 *  Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
003 *  <p>
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *  <p>
008 *  http://www.apache.org/licenses/LICENSE-2.0
009 *  <p>
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package com.mybatisflex.core.audit.http;
017
018import java.nio.charset.StandardCharsets;
019import java.security.MessageDigest;
020
021public class HashUtil {
022
023    private HashUtil() {}
024
025    private static final char[] HEX_DIGITS = "0123456789abcdef".toCharArray();
026
027    public static String md5(String srcStr) {
028        return hash("MD5", srcStr);
029    }
030
031    public static String sha256(String srcStr) {
032        return hash("SHA-256", srcStr);
033    }
034
035    public static String hash(String algorithm, String srcStr) {
036        try {
037            MessageDigest md = MessageDigest.getInstance(algorithm);
038            byte[] bytes = md.digest(srcStr.getBytes(StandardCharsets.UTF_8));
039            return toHex(bytes);
040        } catch (Exception e) {
041            throw new RuntimeException(e);
042        }
043    }
044
045    public static String toHex(byte[] bytes) {
046        StringBuilder ret = new StringBuilder(bytes.length * 2);
047        for (byte b : bytes) {
048            ret.append(HEX_DIGITS[(b >> 4) & 0x0f]);
049            ret.append(HEX_DIGITS[b & 0x0f]);
050        }
051        return ret.toString();
052    }
053
054}