(DataFlex) Write PKCS1 or PKCS8 Public Key PEM

Demonstrates how to write either PKCS1 or PKCS8 format PEM files. PKCS1 public keys have this PEM format:

-----BEGIN RSA PUBLIC KEY-----
BASE64 ENCODED DATA
-----END RSA PUBLIC KEY-----

-----BEGIN PUBLIC KEY-----
BASE64 ENCODED DATA
-----END PUBLIC KEY-----

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoChilkatGlob
    Boolean iSuccess
    Handle hoPem
    Integer i
    Integer iNumPublicKeys
    String sTemp1

    // Unlock the Chilkat API.
    // Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
    // by calling UnlockBundle.  It requires a Bundle unlock code.
    Get Create (RefClass(cComChilkatGlobal)) To hoChilkatGlob
    If (Not(IsComObjectCreated(hoChilkatGlob))) Begin
        Send CreateComObject of hoChilkatGlob
    End
    Get ComUnlockBundle Of hoChilkatGlob "Anything for 30-day trial." To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoChilkatGlob To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatPem)) To hoPem
    If (Not(IsComObjectCreated(hoPem))) Begin
        Send CreateComObject of hoPem
    End

    // Load a public key from a PEM file.
    // (Assume the PEM contains at least one public key..)
    Get ComLoadPemFile Of hoPem "/Users/chilkat/testData/pem/myPublicKey.pem" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoPem To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComNumPublicKeys Of hoPem To iNumPublicKeys
    If (iNumPublicKeys = 0) Begin
        Showln (("Error: Expected the PEM to contain public keys."))
        Procedure_Return
    End

    // Get each public key as PEM, first in PKCS1 format, then in PKCS8.
    For i From 1 To iNumPublicKeys

        // First output to PKCS1 PEM format:
        Showln "This is PKCS1 format:"
        Set ComPublicKeyFormat Of hoPem To "pkcs1"
        Get ComToPem Of hoPem To sTemp1
        Showln sTemp1

        // Now PKCS8 PEM format:
        Showln "This is PKCS8 format:"
        Set ComPublicKeyFormat Of hoPem To "pkcs8"
        Get ComToPem Of hoPem To sTemp1
        Showln sTemp1

    Loop



End_Procedure