DataFlex

SFTP Public-Key Authentication

See more SFTP Examples

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

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoSftp
    String sHostname
    Integer iPort
    Variant vKey
    Handle hoKey
    String sPrivKey
    String sTemp1
    Boolean bTemp1

    Move False To iSuccess

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

    Get Create (RefClass(cComChilkatSFtp)) To hoSftp
    If (Not(IsComObjectCreated(hoSftp))) Begin
        Send CreateComObject of hoSftp
    End

    // Set some timeouts, in milliseconds:
    Set ComConnectTimeoutMs Of hoSftp To 5000
    Set ComIdleTimeoutMs Of hoSftp To 15000

    // Connect to the SSH server.  
    // The standard SSH port = 22
    // The hostname may be a hostname or IP address.
    Move "sftp.example.com" To sHostname
    Move 22 To iPort
    Get ComConnect Of hoSftp sHostname iPort To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoSftp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatSshKey)) To hoKey
    If (Not(IsComObjectCreated(hoKey))) Begin
        Send CreateComObject of hoKey
    End

    // 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.)
    Get ComLoadText Of hoKey "myPrivateKey.pem" To sPrivKey
    Get ComLastMethodSuccess Of hoKey To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoKey To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // 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.
    Get ComFromOpenSshPrivateKey Of hoKey sPrivKey To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoKey To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Authenticate with the SSH server.  Chilkat SFTP supports
    // both password-based authenication as well as public-key
    // authentication.  
    Get pvComObject of hoKey to vKey
    Get ComAuthenticatePk Of hoSftp "myLogin" vKey To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoSftp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComLastErrorText Of hoSftp To sTemp1
    Showln sTemp1
    Showln "Public-Key Authentication Successful!"


End_Procedure