<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">Am 02.12.2022 um 12:46 schrieb David Chadwick <<a href="mailto:d.w.chadwick@verifiablecredentials.info" class="">d.w.chadwick@verifiablecredentials.info</a>>:</div><br class="Apple-interchange-newline"><div class="">
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<div class="moz-cite-prefix">On 02/12/2022 11:24, Torsten
Lodderstedt wrote:<br class="">
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Hi David,
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<div class="">Am 23.11.2022 um 19:14 schrieb David Chadwick
via Openid-specs-ab <<a href="mailto:openid-specs-ab@lists.openid.net" class="moz-txt-link-freetext" moz-do-not-send="true">openid-specs-ab@lists.openid.net</a>>:</div>
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<div class=""><p class="">Hi Torsten</p><p class="">excellent work. I fully support its adoption
by the WG</p>
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Thanks.<br class="">
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<div class=""><p class="">I note however that if the Verifier uses a
QR code to kick off the transaction, then the wallet
could equally well display a QR code containing the
vp_token (assuming the VC is small enough) in which
case BLE will not be needed. This flow should be
supported.</p>
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<div class="">Do you mean the wallet would show a QR code in response
to the request encoded in the verifier’s QR code?</div>
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</blockquote><p class="">Yes, the wallet can display a QR code in answer to the verifier's
request (in a QRcode). This only works for small VP/VC due to the
size restrictions of QR codes, </p></div></div></blockquote><div>The QR code only contains a small amount of data sufficient to establish a secure connection. The presentation request itself is sent over BLE. Putting the whole request in the QR Code would result in a much bigger QR Code. </div><div><br class=""></div><div>I would suggest to treat this is a another protocol besides BLE. </div><blockquote type="cite" class=""><div class=""><div class=""><p class="">but it will be a lot simpler than
setting up a BLE session (which I always find is tedious to do -
e.g. between my car and mobile phone).</p><div class=""><br class=""></div></div></div></blockquote><div><br class=""></div>You don’t need to setup a BLE session yourself with the QR Code approach. That will happen automatically. UX is key! </div><div><blockquote type="cite" class=""><div class=""><div class=""><p class="">Kind regards</p><p class="">David<br class="">
</p>
<blockquote type="cite" cite="mid:5C35187F-2B74-46C6-8AB4-928400230F88@lodderstedt.net" class="">
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<div class="">best regards.</div>
<div class="">Torsten. </div>
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<div class=""><div class=""> <br class="webkit-block-placeholder"></div><p class="">Kind regards</p><p class="">David<br class="">
</p>
<div class="moz-cite-prefix">On 23/11/2022 17:52,
Torsten Lodderstedt via Openid-specs-ab wrote:<br class="">
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<blockquote type="cite" cite="mid:025D3FE0-0599-48BA-8E02-A2B1259E09D4@lodderstedt.net" class="">
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Hi all,
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<div class="">Kristina, Kenichi, Sasi, Ramesh, and
myself have been working for a couple of month on a
specification to enable VC presentation over BLE. </div>
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<div class="">Here is the link the individual draft: <a href="https://tlodderstedt.github.io/openid-for-verifiable-presentations-offline-1_0-00.html" class="moz-txt-link-freetext" moz-do-not-send="true">https://tlodderstedt.github.io/openid-for-verifiable-presentations-offline-1_0-00.html</a></div>
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<div class="">We think this would be a valuable
extension to the OpenID 4 VCs protocol family as it
would allow offline presentation (e.g. at the
entrance of a conference or a restaurant) using the
mechanisms we already have in OpenID4VPs.</div>
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<div class="">An implementation of the spec is under
way at MOSIP. </div>
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<div class="">We ask the WG to consider this draft for
adoption as WG document. </div>
<div class=""><br class="">
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<div class="">best regards,</div>
<div class="">Torsten </div>
<br class="">
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