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DataFlex Examples

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(DataFlex) Convert Java KeyStore to PEM

Loads a Java keystore file and saves the trusted certificate entries to a PEM file.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoJks
    String sJksPassword
    Boolean iSuccess
    Handle hoFac
    Integer iNumCerts
    Integer i
    Variant vCert
    Handle hoCert
    String sPem
    String sTemp1

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

    Get Create (RefClass(cComChilkatJavaKeyStore)) To hoJks
    If (Not(IsComObjectCreated(hoJks))) Begin
        Send CreateComObject of hoJks
    End

    Move "myJksPassword" To sJksPassword

    //  Load the Java keystore from a file.  The JKS file password is used
    //  to verify the keyed digest that is found at the very end of the keystore.
    //  It verifies that the keystore has not been modified.
    Get ComLoadFile Of hoJks sJksPassword "/someDir/keyStore.jks" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoJks To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    //  Open/create the output PEM file.
    //  This example uses Chilkat's file access class for writing the output file.
    //  You may replace the file I/O lines of code with whatever is most convenient for you.
    Get Create (RefClass(cComCkFileAccess)) To hoFac
    If (Not(IsComObjectCreated(hoFac))) Begin
        Send CreateComObject of hoFac
    End
    Get ComOpenForWrite Of hoFac "/pemFiles/caCerts.pem" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoFac To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComNumTrustedCerts Of hoJks To iNumCerts

    //  Iterate over the trusted certs, get the PEM for each,
    //  and append it to the output file.
    Move 0 To i
    While (i < iNumCerts)
        Get ComGetTrustedCert Of hoJks i To vCert
        If (IsComObject(vCert)) Begin
            Get Create (RefClass(cComChilkatCert)) To hoCert
            Set pvComObject Of hoCert To vCert
        End

        //  Get the certificate in PEM format.
        Get ComExportCertPem Of hoCert To sPem

        //  Append the PEM string to the open file.
        //  The PEM contains only us-ascii chars..
        Get ComAppendAnsi Of hoFac sPem To iSuccess
        If (iSuccess <> True) Begin
            Get ComLastErrorText Of hoFac To sTemp1
            Showln sTemp1
            Send Destroy of hoCert
            Procedure_Return
        End

        Send Destroy of hoCert
        Move i + 1 To i
    Loop

    //  Close the output file.
    Send ComFileClose To hoFac

    Showln "Trusted certificates saved to PEM."


End_Procedure

 

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