Nothing like forgetting to add Algorithms which was the issue
ERR_load_BIO_strings();
ERR_load_crypto_strings();
OpenSSL_add_all_algorithms();
OpenSSL_add_all_ciphers();
OpenSSL_add_all_digests();
basically get the public key
testrsa = RSA_new();
FILE *fp = fopen("x509public.pem", "r");
if(PEM_read_RSAPublicKey(fp, &testrsa, NULL, NULL) == NULL) {
printf("\n%s\n", "Error Reading public key x509public.pem");
return;
}
printf("TEST KEY OKAY \n");
Set the EVP up.
EVP_PKEY *pk;
if ((pk=EVP_PKEY_new()) == NULL){
fprintf(stderr,"err 1\n");
return;
}
printf("here now \n");
EVP_PKEY * pubkey=EVP_PKEY_new();
int rc=EVP_PKEY_set1_RSA(pubkey, testrsa);
Load the x509
x=NULL;
x= PEM_read_X509(fp,&x, NULL, NULL);
if (x==NULL){
fprintf(stderr,"null x509\n");
return;
}
fclose(fp);
and verify it
rc= X509_verify(x,pubkey);
returns a 1 value now. done.
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