Null termination after encryption.

[Michael Luich]

Hello everyone, here's what's driving me nuts. I'm sure i'm missing
something simple, but why isn't the encrypted message coming out of  "
BIO_get_mem_data(out, &enc_msg); " Null terminated ?

Full code below.

Mike Luich


        fprintf (stderr, "ENTER: %s in %s, line %d.\n",
                 __FUNCTION__, __FILE__, __LINE__);


      const    EVP_CIPHER *cipher= EVP_des_ede3_cbc();
      STACK_OF(X509) *certs= sk_X509_new_null();
      X509 *tmp;
      BIO *in, *out, *b64_bio;
      PKCS7 *pkcs7;
      char *enc_msg, *ptr;

      OpenSSL_add_all_algorithms();
      ERR_load_crypto_strings();
      RAND_load_file("/dev/urandom", 1024);

          fprintf (stderr, "START: %s in %s, line %d.\n",
                   __FUNCTION__, __FILE__, __LINE__);

      in = BIO_new_mem_buf(clear_msg, -1);
      out = BIO_new(BIO_s_mem());

      if (!(tmp = PEM_read_X509(pub_cert, NULL, NULL, NULL))) {
          fprintf (stderr, "Error Opening Public Key");
      }
      sk_X509_push(certs,tmp);
      fclose (pub_cert);

      if (!(pkcs7 = PKCS7_encrypt(certs, in, cipher, PKCS7_BINARY))) {
          fprintf (stderr,"Error making PKC#7object : %s in %s, line %d.\n",
                            __FUNCTION__, __FILE__, __LINE__);
      }

      if (SMIME_write_PKCS7(out, pkcs7, in, 0) !=1)
      {
          fprintf (stderr,"Error writing SMIME : %s in %s, line %d.\n",
                            __FUNCTION__, __FILE__, __LINE__);
      }

          fprintf (stderr,"Encryption success : %s in %s, line %d.\n",
                        __FUNCTION__, __FILE__, __LINE__);

      BIO_get_mem_data(out, &enc_msg);

          fprintf (stderr,"Data out of bio: %s in %s, line %d.\n %s\n",
                   __FUNCTION__, __FILE__, __LINE__, enc_msg);