Re: Issue facing while using function "const EVP_MD *EVP_get_digestbyname(const char *name)"

[Tom marchand]

Do you have to call OpenSSL_add_all_digests() first?


On Aug 9, 2013, at 7:17 PM, Sanjay Kumar (sanjaku5) wrote:

Hello All,

I have a test program to use the function EVP_get_digestbyname as below

I am not able figure out why function “EVP_get_digestbyname” return NULL ?

After running the program as below I am getting the print “md is NULL”

Any help ?


#include <stdio.h>
#include <openssl/evp.h>

int main(int argc, char *argv[])
{
  const EVP_MD *md;
  const  char *hash_type = "SHA1";

  md = EVP_get_digestbyname(hash_type);
  if(md == NULL)
  {
    printf("\n md is NULL\n");
  }
  return 0;
}

Compilation:
cc test.c –lcrypto

Running:
./a.out
md is NULL


Thanks,
Sanjay