Get the JWE Protected Header

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.GetProtectedHeader, which copies the decoded shared JWE protected header into a JsonObject.

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoJwe
    String sJweCompact
    Variant vJson
    Handle hoJson
    String sTemp1

    Move False To iSuccess

    Get Create (RefClass(cComChilkatJwe)) To hoJwe
    If (Not(IsComObjectCreated(hoJwe))) Begin
        Send CreateComObject of hoJwe
    End

    //  Load the JWE.
    Move "eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>" To sJweCompact
    Get ComLoadJwe Of hoJwe sJweCompact To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoJwe To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    //  Copy the decoded shared JWE protected header into a JsonObject.  Only the protected header is
    //  returned; it is not merged with the unprotected or per-recipient headers.
    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get pvComObject of hoJson to vJson
    Get ComGetProtectedHeader Of hoJwe vJson To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoJwe To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Set ComEmitCompact Of hoJson To False
    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1


End_Procedure