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(C) SFTP Public-Key Authentication

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

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

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

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

    sftp = CkSFtp_Create();

    // 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 = "sftp.example.com";
    port = 22;
    success = CkSFtp_Connect(sftp,hostname,port);
    if (success != TRUE) {
        printf("%s\n",CkSFtp_lastErrorText(sftp));
        CkSFtp_Dispose(sftp);
        return;
    }

    key = CkSshKey_Create();

    // 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.)
    privKey = CkSshKey_loadText(key,"myPrivateKey.pem");
    if (CkSshKey_getLastMethodSuccess(key) != TRUE) {
        printf("%s\n",CkSshKey_lastErrorText(key));
        CkSFtp_Dispose(sftp);
        CkSshKey_Dispose(key);
        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 = CkSshKey_FromOpenSshPrivateKey(key,privKey);
    if (success != TRUE) {
        printf("%s\n",CkSshKey_lastErrorText(key));
        CkSFtp_Dispose(sftp);
        CkSshKey_Dispose(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));
        CkSFtp_Dispose(sftp);
        CkSshKey_Dispose(key);
        return;
    }

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


    CkSFtp_Dispose(sftp);
    CkSshKey_Dispose(key);

    }

 

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