content: /*
   *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
   *  <p>
   *  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
   *  <p>
   *  http://www.apache.org/licenses/LICENSE-2.0
   *  <p>
   *  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 com.agentsflex.core.util;
  
  import javax.crypto.Mac;
  import javax.crypto.spec.SecretKeySpec;
  import java.nio.charset.StandardCharsets;
  import java.security.MessageDigest;
  import java.util.Base64;
  
  public class HashUtil {
      private static final char[] HEX_DIGITS = "0123456789abcdef".toCharArray();
      private static final char[] CHAR_ARRAY = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".toCharArray();
  
      public static String md5(String srcStr) {
          return hash("MD5", srcStr);
      }
  
  
      public static String sha256(String srcStr) {
          return hash("SHA-256", srcStr);
      }
  
      public static String hmacSHA256ToBase64(String content, String secret) {
          try {
              Mac hmacSHA256 = Mac.getInstance("HmacSHA256");
              SecretKeySpec secretKey = new SecretKeySpec(secret.getBytes(StandardCharsets.UTF_8), "HmacSHA256");
              hmacSHA256.init(secretKey);
              byte[] bytes = hmacSHA256.doFinal(content.getBytes(StandardCharsets.UTF_8));
              return Base64.getEncoder().encodeToString(bytes);
          } catch (Exception e) {
              throw new RuntimeException(e);
          }
      }
  
      public static String hash(String algorithm, String srcStr) {
          try {
              MessageDigest md = MessageDigest.getInstance(algorithm);
              byte[] bytes = md.digest(srcStr.getBytes(StandardCharsets.UTF_8));
              return bytesToHex(bytes);
          } catch (Exception e) {
              throw new RuntimeException(e);
          }
      }
  
      public static String bytesToHex(byte[] bytes) {
          StringBuilder ret = new StringBuilder(bytes.length * 2);
          for (byte aByte : bytes) {
              ret.append(HEX_DIGITS[(aByte >> 4) & 0x0f]);
              ret.append(HEX_DIGITS[aByte & 0x0f]);
          }
          return ret.toString();
      }
  
  
  
  }
  