SSH Public Key Authentication

Demonstrates how to authenticate with an SSH server using public key authentication.

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

FreeBSD C++ Libraries

HP-UX C++ Libraries

BlackBerry QNX C++ Libraries

#include <C_CkSsh.h>
#include <C_CkSshKey.h>

void ChilkatSample(void)
    {
    HCkSsh ssh;
    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 sending email
    //  to support@chilkatsoft.com

    ssh = CkSsh_Create();

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

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

    //  Set some timeouts, in milliseconds:
    CkSsh_putConnectTimeoutMs(ssh,5000);
    CkSsh_putIdleTimeoutMs(ssh,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 = CkSsh_Connect(ssh,hostname,port);
    if (success != TRUE) {
        printf("%s\n",CkSsh_lastErrorText(ssh));
        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.  PuTTY keys typically use the .ppk
    //  file extension, while OpenSSH keys use the PEM format.

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

    //  (For PuTTY keys, call FromPuttyPrivateKey instead.)
    success = CkSshKey_FromOpenSshPrivateKey(key,privKey);
    if (success != TRUE) {
        printf("%s\n",CkSshKey_lastErrorText(key));
        return;
    }

    //  Authenticate with the SSH server using the login and
    //  private key.  (The corresponding public key should've
    //  been installed on the SSH server beforehand.)
    success = CkSsh_AuthenticatePk(ssh,"myLogin",key);
    if (success != TRUE) {
        printf("%s\n",CkSsh_lastErrorText(ssh));
        return;
    }

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

    CkSsh_Dispose(ssh);
    CkSshKey_Dispose(key);

    }