On Thu, 6 Sep 2001, Zulkiffli Mohd Nur wrote:
>
> hello.
>
>
>
> i have a problem how to read version and serial number from certificate.
X509_get_version() will return a long that could be printed using %ld
specification.
>
> just now i have a certificate.
>
>
>
> the code like this
>
>
>
> #include <stdio.h>
> #include <openssl/x509.h>
> #include <openssl/pem.h>
>
>
>
>
> main()
> {
> X509 *x;
> FILE *fp;
> EVP_PKEY * pkey;
>
> long version;
> char * s;
>
>
>
>
> if ((fp=fopen("C:\\CryptoWeb\\backup 492001\\Haizad.crt","r")) != NULL)
> {
> x=X509_new();
> if (PEM_read_X509(fp,&x,NULL,NULL)!=NULL)
> printf("\nReading success!\n");
> else
>
> {
> printf ("\nError reading certificate!");
> exit (1);
> }
> printf("\nCertificate value: %s",x);
> version = X509_NAME_oneline(X509_get_version(x), NULL,NULL);
> printf ("\nVersion: %s\n",version);
>
>
> s = X509_NAME_oneline(X509_get_subject_name(x),NULL,NULL);
> printf("\nSUBJECT NAME: %s\n",s);
> s = X509_NAME_oneline(X509_get_issuer_name(x),NULL,NULL);
> printf("\nISSUER NAME: %s\n",s);
>
>
>
> /* Get public key - eay */
> pkey=X509_get_pubkey(x);
> if (pkey == NULL) {
> printf ("\nPublic key error!");
> exit (1);
> }
>
> if (pkey == NULL) {
> printf ("\nPublic key is NULL!");
> exit (1);
> }
> else
> printf ("Public key found!");
>
>
>
> printf("\nPublic key:");
> RSA_print_fp(stdout,pkey->pkey.rsa,0);
>
>
>
> X509_free(x);
> fclose(fp);
> }
> else
> perror("ERROR, haizad.crt");
>
>
>
> }
>
> this code have some error.
>
> can you help me give any example.
>
> please reply as soon as possible.
>
> thank you
>
>
>
>
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