DataFlex

Generate RSA Key for SFTP

See more SSH Key Examples

Generates an 2048-bit RSA key for SSH/SFTP. Your application will use the generated private key. The public key is to be uploaded to the server and stored in the ".ssh" directory located under the HOME directory of the SSH/SFTP user account. DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoKey
    Integer iNumBits
    Integer iExponent
    String sExportedKey
    Boolean iExportEncrypted

    Move False To iSuccess

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

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

    Move 2048 To iNumBits
    Move 65537 To iExponent
    Get ComGenerateRsaKey Of hoKey iNumBits iExponent To iSuccess
    If (iSuccess <> True) Begin
        Showln "Bad params passed to RSA key generation method."
        Procedure_Return
    End

    // Note: Generating a public/private key pair is CPU intensive
    // and may take a short amount of time (more than few seconds,
    // but less than a minute).

    // Export the RSA private key to encrypted PuTTY format:
    Set ComPassword Of hoKey To "secret"
    Move True To iExportEncrypted
    Get ComToPuttyPrivateKey Of hoKey iExportEncrypted To sExportedKey
    Get ComSaveText Of hoKey sExportedKey "qa_output/rsa_privkey_putty_encrypted.ppk" To iSuccess

    // Export the public key to openSSH format..
    Get ComToOpenSshPublicKey Of hoKey To sExportedKey
    Get ComSaveText Of hoKey sExportedKey "qa_output/id_rsa.pub" To iSuccess

    // Sample id_rsa.pub:
    // ssh-rsa
    // AAAAB3NzaC1yc2EAAAADAQABAAA.....6tK3+vjwX/YC9dIXUz2Z 

    Showln "Finished.  Upload the id_rsa.pub to your .ssh directory located on the SSH/SFTP server under your user account's HOME directory"
    Showln "(Your HOME directory is the default directory you are in when you login via an SSH terminal.)"

    // After the id_rsa.pub is uploaded to your user account on the SSH/SFTP server, you can authenticate using the private key.
    // Your application will load the private key (.ppk) as shown here: Load SSH/SFTP Private Key .ppk
    // and then authenticate by calling AuthenticatePk (or AuthenticatePwPk).


End_Procedure