SFTP Public-Key Authentication

Demonstrates how to authenticate with an SSH server using publickey authentication.

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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_CkSFtp.h>
#include <C_CkSshKey.h>

void ChilkatSample(void)
    {
    HCkSFtp sftp;
    BOOL success;
    long port;
    const char * hostname;
    HCkSshKey key;
    const char * privKey;

    //  Important: It is helpful to send the contents of the
    //  sftp.LastErrorText property when requesting support.

    sftp = CkSFtp_Create();

    //  Any string automatically begins a fully-functional 30-day trial.

    success = CkSFtp_UnlockComponent(sftp,"Anything for 30-day trial");
    if (success != TRUE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        return;
    }

    //  Set some timeouts, in milliseconds:
    CkSFtp_putConnectTimeoutMs(sftp,5000);
    CkSFtp_putIdleTimeoutMs(sftp,15000);

    //  Connect to the SSH server.
    //  The standard SSH port = 22
    //  The hostname may be a hostname or IP address.

    hostname = "www.my-ssh-server.com";
    port = 22;
    success = CkSFtp_Connect(sftp,hostname,port);
    if (success != TRUE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        return;
    }

    key = CkSshKey_Create();

    //  Load a private key from a PEM file:
    //  (Private keys may be loaded from OpenSSH and Putty formats.
    //  Both encrypted and unencrypted private key file formats
    //  are supported.  This example loads an unencrypted private
    //  key in OpenSSH format.

    privKey = CkSshKey_loadText(key,"myPrivateKey.pem");
    if (privKey == 0 ) {
        printf("%s\n",CkSshKey_lastErrorText(key));
        return;
    }

    success = CkSshKey_FromOpenSshPrivateKey(key,privKey);
    if (success != TRUE) {
        printf("%s\n",CkSshKey_lastErrorText(key));
        return;
    }

    //  Authenticate with the SSH server.  Chilkat SFTP supports
    //  both password-based authenication as well as public-key
    //  authentication.
    success = CkSFtp_AuthenticatePk(sftp,"myLogin",key);
    if (success != TRUE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        return;
    }

    printf("%s\n",CkSFtp_lastErrorText(sftp));
    printf("Public-Key Authentication Successful!\n");

    CkSFtp_Dispose(sftp);
    CkSshKey_Dispose(key);

    }