text: /*
   * Copyright (C) 2021 Huawei Device Co., Ltd.
   * 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
   *
   *     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.
   */
  
  #include "util/digest_parameter.h"
  
  namespace OHOS::Security::Verify {
  DigestParameter::DigestParameter() : digestOutputSizeBytes(0), md(nullptr), ptrCtx(nullptr)
  {
  }
  
  DigestParameter::~DigestParameter()
  {
      if (ptrCtx != nullptr) {
          EVP_MD_CTX_destroy(ptrCtx);
          ptrCtx = nullptr;
      }
      /* md points to the OpenSSL global static struct constant, no need to free. */
      md = nullptr;
  }
  
  DigestParameter::DigestParameter(const DigestParameter& other)
  {
      digestOutputSizeBytes = other.digestOutputSizeBytes;
      md = other.md;
      ptrCtx = EVP_MD_CTX_create();
      EVP_MD_CTX_copy(ptrCtx, other.ptrCtx);
  }
  
  DigestParameter& DigestParameter::operator = (const DigestParameter& other)
  {
      if (ptrCtx != nullptr) {
          EVP_MD_CTX_destroy(ptrCtx);
          ptrCtx = nullptr;
      }
  
      digestOutputSizeBytes = other.digestOutputSizeBytes;
      md = other.md;
      ptrCtx = EVP_MD_CTX_create();
      EVP_MD_CTX_copy(ptrCtx, other.ptrCtx);
      return *this;
  }
  }