Re: W3C XML Digital Signature Object Element Processing Issue

2010-12-15 Thread Andreas Kuehne
Hi Deepak, I guess you came across some of the very common problems of XML signature verification. Do you use a ready-made toolkit ( like Bouncy Castle ) ? I guess you have to dig into the details of reference resolving ... But I would propose another approach for your scenario : I'm member of

Re: [widgets] Seeking review of Widgets Dig Sig Test Suite

2010-10-06 Thread kuehne
Hi Marcos, especially for widget signing we started the adventure of adding EC support to our signing server and got a little bit suprised by the poor support by the crypto libs. Nevertheless I guess we can track down one of our EC-problems to the ecdsa.cert.pem certificate. Despite using an

Re: Re: ENISA Smartphone security study

2010-05-21 Thread kuehne
Andreas Kuehne - original Nachricht Betreff: Re: ENISA Smartphone security study Gesendet: Do, 20. Mai 2010 Von: Arthur Barstowart.bars...@nokia.com Giles, On 5/20/10 5:43 AM, ext Giles Hogben wrote: Apologies - I should have explained a little more what we are looking for from

Minor DigSig feedback

2010-05-05 Thread Andreas Kuehne
Hi all, just a minor comment found by build a test case : Section7.1. Common Constraints for Signature Generation and Validation 1. [...] 2. [...] 3. For each ds:Reference element: 1. The URI attribute MUST be a zip relative path

Re: Widget Signature modification proposal (revised)

2010-04-07 Thread kuehne
Hi all, from the implementors perspective these modifications don't introduce too much trouble. But I'm a little bit concerned about the explicit ban of canonicalizations for 'external' documents like config.xml. In real life it happens very fast that an XML file is still valid but modified in

Re: Re: Widget Signature modification proposal (revised)

2010-04-07 Thread kuehne
Hi Frederik, hi Thomas ! I don't want to critisize the decisions taken by your group. To keep implementations and testing easy is a good reason ! But from my outside view it's a bit suprising : Seeing that XMLDSig is used let's me expect a complex solution. So it would be good to read at the

Re: Re: Issues with XML Dig Sig and XML Canonicalization

2010-02-16 Thread kuehne
Hi Marcos, thanks for your friendly mail ! I'll upload the latest client version to sourceforge and post a link to the list. The server version will take some time, we are a bit stuck due to feature overload ... Btw.: I would like to ask about the verification side of the widgets. If there

Re: Issues with XML Dig Sig and XML Canonicalization

2010-02-12 Thread kuehne
Hi all, our goal in the OASIS DSS group is make the living with DSig as easy as possible ! That's why we made a spec to easily access a crypto server component by webservice and forget about signature standards, algorithms, validity dates ... My company build a open sourced server

Implementation of the widget signing spec

2009-10-21 Thread Andreas Kuehne
Hi all, I would like to let you know that we finished the implementation of the widget signing spec within our open sourced signing server. As an implementaion of the OASIS DSS spec we focus on server side signature creation. The server side processing of signing process offers some advantages