content: /*
   *
   * 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 com.alibaba.cloudapp.messaging.redis.demo.intercepter;
  
  import com.alibaba.cloudapp.api.cache.interceptors.EncryptInterceptor;
  import com.alibaba.cloudapp.exeption.CloudAppException;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.crypto.Cipher;
  import java.security.PrivateKey;
  
  public class RsaEncryptInterceptor extends EncryptInterceptor {
  
      private static final Logger logger = LoggerFactory.getLogger(RsaEncryptInterceptor.class);
  
      private final PrivateKey privateKey;
  
      public RsaEncryptInterceptor(PrivateKey privateKey) {
          this.privateKey = privateKey;
      }
  
      @Override
      public byte[] intercept(byte[] param) throws CloudAppException {
          try {
              Cipher cipher = Cipher.getInstance("RSA");
              cipher.init(Cipher.ENCRYPT_MODE, privateKey);
              return cipher.doFinal(param);
          } catch (Exception e) {
              logger.error("encrypt error, error:{}", e.getMessage());
              return param;
          }
      }
  
  }
  