Verify SSL Server Certificate

Demonstrates how to connect to an SSL server and verify its SSL certificate.

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MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

#include <C_CkSocket.h>
#include <C_CkCert.h>

void ChilkatSample(void)
    {
    HCkSocket socket;
    BOOL success;
    BOOL ssl;
    long maxWaitMillisec;
    const char * sslServerHost;
    long sslServerPort;
    HCkCert cert;
    BOOL bExpired;
    BOOL bRevoked;
    BOOL bSignatureVerified;
    BOOL bTrustedRoot;

    socket = CkSocket_Create();

    success = CkSocket_UnlockComponent(socket,"Anything for 30-day trial");
    if (success != TRUE) {
        printf("Failed to unlock component\n");
        return;
    }

    ssl = TRUE;

    maxWaitMillisec = 20000;

    //  The SSL server hostname may be an IP address, a domain name,
    //  or "localhost".

    sslServerHost = "www.paypal.com";

    sslServerPort = 443;

    //  Connect to the SSL server:
    success = CkSocket_Connect(socket,sslServerHost,sslServerPort,ssl,maxWaitMillisec);
    if (success != TRUE) {
        printf("%s\n",CkSocket_lastErrorText(socket));
        return;
    }

    cert = CkSocket_GetSslServerCert(socket);
    if (!(cert == 0 )) {

        printf("Server Certificate:\n");
        printf("Distinguished Name: %s\n",CkCert_subjectDN(cert));
        printf("Common Name: %s\n",CkCert_subjectCN(cert));
        printf("Issuer Distinguished Name: %s\n"
            ,CkCert_issuerDN(cert));
        printf("Issuer Common Name: %s\n",CkCert_issuerCN(cert));

        bExpired = CkCert_IsExpired(cert);
        bRevoked = CkCert_getRevoked(cert);
        bSignatureVerified = CkCert_getSignatureVerified(cert);
        bTrustedRoot = CkCert_getTrustedRoot(cert);

        printf("Expired: %d\n",bExpired);
        printf("Revoked: %d\n",bRevoked);
        printf("Signature Verified: %d\n",bSignatureVerified);
        printf("Trusted Root: %d\n",bTrustedRoot);

        CkCert_Dispose(cert);
    }

    //  Close the connection with the server
    //  Wait a max of 20 seconds (20000 millsec)
    CkSocket_Close(socket,20000);



    CkSocket_Dispose(socket);

    }