C

SFTP use Cert's Private Key for Authentication (Windows)

See more SFTP Examples

Demonstrates how to use the private key of a pre-installed certificate (on Windows) for SFTP authentication. The certificate's private key must be marked as "exportable" when originally installed. C

#include <C_CkCert.h>
#include <C_CkPrivateKey.h>
#include <C_CkSshKey.h>
#include <C_CkSFtp.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkCert cert;
    HCkPrivateKey privKey;
    const char *privKeyPem;
    HCkSshKey sshKey;
    HCkSFtp sftp;

    success = FALSE;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    cert = CkCert_Create();

    // Load the certificate from the Windows certificate store
    success = CkCert_LoadByCommonName(cert,"my_cert_common_name");
    if (success == FALSE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkCert_Dispose(cert);
        return;
    }

    // Get the private key.  
    privKey = CkPrivateKey_Create();
    success = CkCert_GetPrivateKey(cert,privKey);
    if (success == FALSE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkCert_Dispose(cert);
        CkPrivateKey_Dispose(privKey);
        return;
    }

    privKeyPem = CkPrivateKey_getPkcs8Pem(privKey);
    if (CkPrivateKey_getLastMethodSuccess(privKey) == FALSE) {
        printf("%s\n",CkPrivateKey_lastErrorText(privKey));
        CkCert_Dispose(cert);
        CkPrivateKey_Dispose(privKey);
        return;
    }

    sshKey = CkSshKey_Create();
    success = CkSshKey_FromOpenSshPrivateKey(sshKey,privKeyPem);
    if (success == FALSE) {
        printf("%s\n",CkSshKey_lastErrorText(sshKey));
        CkCert_Dispose(cert);
        CkPrivateKey_Dispose(privKey);
        CkSshKey_Dispose(sshKey);
        return;
    }

    // Connect to an SSH/SFTP server
    sftp = CkSFtp_Create();
    success = CkSFtp_Connect(sftp,"sftp.example.com",22);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkCert_Dispose(cert);
        CkPrivateKey_Dispose(privKey);
        CkSshKey_Dispose(sshKey);
        CkSFtp_Dispose(sftp);
        return;
    }

    // Authenticate with the SSH server using a username + private key.
    // (The private key serves as the password.  The username identifies
    // the SSH user account on the server.)
    success = CkSFtp_AuthenticatePk(sftp,"mySshLogin",sshKey);
    if (success == FALSE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkCert_Dispose(cert);
        CkPrivateKey_Dispose(privKey);
        CkSshKey_Dispose(sshKey);
        CkSFtp_Dispose(sftp);
        return;
    }

    printf("OK, the connection and authentication with the SSH server is completed.\n");

    // This example is only to show the connection + authentication using a private key associated with a certificate in the Windows certificate store...


    CkCert_Dispose(cert);
    CkPrivateKey_Dispose(privKey);
    CkSshKey_Dispose(sshKey);
    CkSFtp_Dispose(sftp);

    }