DataFlex

Save a Private Key as an Encrypted PKCS #8 PEM File

Demonstrates the Chilkat PrivateKey.SavePkcs8EncryptedPemFile method, which saves the key as password-protected PKCS #8 PEM (the ENCRYPTED PRIVATE KEY label). The first argument is the password and the second is the destination path.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: The text (PEM) form of an encrypted saved key — portable across systems and safe to store because the private material is protected by a passphrase. It is the encrypted counterpart to SavePkcs8PemFile and a good default for keys kept in configuration or version-controlled deployment repositories. Source the password securely.

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DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoPrivKey
    String sPassword
    String sTemp1

    Move False To iSuccess

    //  Load a private key to export.
    Get Create (RefClass(cComChilkatPrivateKey)) To hoPrivKey
    If (Not(IsComObjectCreated(hoPrivKey))) Begin
        Send CreateComObject of hoPrivKey
    End
    Get ComLoadPemFile Of hoPrivKey "qa_data/private.pem" To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoPrivKey To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    //  The key password is not hard-coded in a real application; obtain it from an interactive
    //  prompt, environment variable, or a secrets vault.
    Move "myKeyPassword" To sPassword

    //  Save as password-protected PKCS #8 PEM (the "ENCRYPTED PRIVATE KEY" label).  The 1st argument
    //  is the password and the 2nd is the destination path.
    Get ComSavePkcs8EncryptedPemFile Of hoPrivKey sPassword "qa_output/private_pkcs8_enc.pem" To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoPrivKey To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Showln "Saved (encrypted)."


End_Procedure