Use openssl to encrypt md5

Use openssl to encrypt md5

/**

• MD5 encryption

• @param data Input the string buf that needs to be encrypted Output string
  */
  int myTools::MD5(const char * data, char * buf)
  { MD5_CTX ctx; unsigned char md[16];
  
  

  MD5_Init(&ctx);
  MD5_Update(&ctx,data,strlen(data));
  MD5_Final(md,&ctx);

  for(int i=0; i<16; i++ ){
  char tmp[10];
  sprintf(tmp,“%02x”,md[i]);
  strcat(buf,tmp);
  }
  return 0;
  }