(PureBasic) Convert DSA DER Private Key to PEM

Converts a DSA private key from DER format to PEM. Demonstrates how to write both encrypted and unencrypted PEM formatted private keys.

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkDsa.pb"

Procedure ChilkatExample()

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

    dsa.i = CkDsa::ckCreate()
    If dsa.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Load a DER private key.
    success.i = CkDsa::ckFromDerFile(dsa,"dsa_priv.der")
    If success <> 1
        Debug CkDsa::ckLastErrorText(dsa)
        CkDsa::ckDispose(dsa)
        ProcedureReturn
    EndIf

    pemStr.s

    ; Save to unencrypted PEM:
    pemStr = CkDsa::ckToPem(dsa)
    success = CkDsa::ckSaveText(dsa,pemStr,"dsa_priv.pem")
    If success <> 1
        Debug CkDsa::ckLastErrorText(dsa)
        CkDsa::ckDispose(dsa)
        ProcedureReturn
    EndIf

    ; Save to encrypted PEM:
    pemStr = CkDsa::ckToEncryptedPem(dsa,"myPassword")
    success = CkDsa::ckSaveText(dsa,pemStr,"dsa_privEncrypted.pem")
    If success <> 1
        Debug CkDsa::ckLastErrorText(dsa)
        CkDsa::ckDispose(dsa)
        ProcedureReturn
    EndIf

    Debug "Finished!"


    CkDsa::ckDispose(dsa)


    ProcedureReturn
EndProcedure