C++

SFTP Public-Key Authentication

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Demonstrates how to authenticate with an SSH/SFTP server using publickey authentication. C++

#include <CkSFtp.h>
#include <CkSshKey.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkSFtp sftp;

    //  Set some timeouts, in milliseconds:
    sftp.put_ConnectTimeoutMs(5000);
    sftp.put_IdleTimeoutMs(15000);

    //  Connect to the SSH server.  
    //  The standard SSH port = 22
    //  The hostname may be a hostname or IP address.
    const char *hostname = "sftp.example.com";
    int port = 22;
    success = sftp.Connect(hostname,port);
    if (success != true) {
        std::cout << sftp.lastErrorText() << "\r\n";
        return;
    }

    CkSshKey key;

    //  Load a PEM file into a string variable:
    //  (This does not load the PEM file into the key.  The LoadText
    //  method is a convenience method for loading the full contents of ANY text
    //  file into a string variable.)
    const char *privKey = key.loadText("myPrivateKey.pem");
    if (key.get_LastMethodSuccess() != true) {
        std::cout << key.lastErrorText() << "\r\n";
        return;
    }

    //  Load a private key from a PEM string:
    //  (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.
    success = key.FromOpenSshPrivateKey(privKey);
    if (success != true) {
        std::cout << key.lastErrorText() << "\r\n";
        return;
    }

    //  Authenticate with the SSH server.  Chilkat SFTP supports
    //  both password-based authenication as well as public-key
    //  authentication.  
    success = sftp.AuthenticatePk("myLogin",key);
    if (success != true) {
        std::cout << sftp.lastErrorText() << "\r\n";
        return;
    }

    std::cout << sftp.lastErrorText() << "\r\n";
    std::cout << "Public-Key Authentication Successful!" << "\r\n";
    }