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    private static final char[] HEX_DIGITS = "0123456789abcdef".toCharArray();
023
024    public static String md5(String srcStr) {
025        return hash("MD5", srcStr);
026    }
027
028    public static String sha256(String srcStr) {
029        return hash("SHA-256", srcStr);
030    }
031
032    public static String hash(String algorithm, String srcStr) {
033        try {
034            MessageDigest md = MessageDigest.getInstance(algorithm);
035            byte[] bytes = md.digest(srcStr.getBytes(StandardCharsets.UTF_8));
036            return toHex(bytes);
037        } catch (Exception e) {
038            throw new RuntimeException(e);
039        }
040    }
041
042    public static String toHex(byte[] bytes) {
043        StringBuilder ret = new StringBuilder(bytes.length * 2);
044        for (byte b : bytes) {
045            ret.append(HEX_DIGITS[(b >> 4) & 0x0f]);
046            ret.append(HEX_DIGITS[b & 0x0f]);
047        }
048        return ret.toString();
049    }
050
051}