Sample code for 30+ languages & platforms
C

Load DER encoded X.509 Certificate (.cer, .crt)

See more Certificates Examples

Loads a digital certificate from a binary DER encoded X.509 Certificate (.cer, .crt) and fetches information about the cert.

Chilkat C Downloads

C
#include <C_CkCert.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkCert cert;

    success = FALSE;

    cert = CkCert_Create();

    // LoadFromFile will load virtually any certificate format file.
    // It will auto-recognize the format and load appropiately.
    success = CkCert_LoadFromFile(cert,"/Users/chilkat/testData/cer/chilkat_ssl.cer");
    if (success != TRUE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkCert_Dispose(cert);
        return;
    }

    // DN = "Distinguished Name"
    printf("SubjectDN:%s\n",CkCert_subjectDN(cert));

    printf("Common Name:%s\n",CkCert_subjectCN(cert));
    printf("Issuer Common Name:%s\n",CkCert_issuerCN(cert));

    printf("Serial Number:%s\n",CkCert_serialNumber(cert));


    CkCert_Dispose(cert);

    }