Question

我必须为给定的输入生成256位长度的哈希值。我正在使用'EVP_sha256'。

错误：未在此范围内声明'EVP_sha256'

以下是我的代码---

HMAC_Init_ex(&hmac, key, keyLength, EVP_sha256(), NULL);

我在我的cpp文件中包含了openssl / evp.h。

使用openssl版本 OpenSSL 1.0.1e-fips 2013年2月11日。

任何指针？

以下计划

文件名：Generatehash.cpp

#include <iostream>
#include <string.h>
#include <openssl/rand.h>
#include <openssl/hmac.h>
#include <openssl/evp.h>
#include <sstream>
#include <iomanip>
#include <bitset>

using namespace std;
int KEY_SIZE = 256;
int AES_BLOCK_SIZE = 16;
int IV_SIZE = 16;

void hmac(unsigned char* key, int keyLength, string msg, unsigned char*         hash)
{

  HMAC_CTX hmac;
  HMAC_CTX_init(&hmac);
  HMAC_Init_ex(&hmac, key, keyLength, EVP_sha256(), NULL);
  if(HMAC_Update(&hmac, ( unsigned char* )&msg[0], msg.length()))
    cout<<"Update success"<<endl;

  unsigned int len = 0;
  if(HMAC_Final(&hmac, hash, &len))
    cout<<"Final success"<<endl;
  HMAC_CTX_cleanup(&hmac);
}

int GenerateHashValue(unsigned char* encryptionKey, int keyLength, string     uri, unsigned char* iv)
{
  unsigned char hashBuffer[32] = {'\0'};
  hmac(encryptionKey, keyLength, uri, hashBuffer);
}

int main()
{
  std::cout<<"TEST START =====>>\n";

  string key = "Jwe9#z+IND.niSNDJwe9#z+IND.niSND";

  string strData = "www.format@imminent.com";

  unsigned char iv[16] = {'\0'};

  GenerateHashValue((unsigned char*)key.c_str(),key.length(),strData, iv);

  std::cout<<"TEST END =====>>\n";
  return 0;
}

用于编译的命令

g ++ Generatehash.cpp -lssl -lcrypto

编译期间无法找到EVP_sha256

0 个答案: