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Thank you Oliver.
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<div>@All, the last sentence in the notes may be misleading. Please ignore it. </div>
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<div>Regards<br>
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<div>On 11 Jun 2024, at 22:09, Oliver Terbu <oliver.terbu@mattr.global> wrote:</div>
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<div>Nie otrzymujesz często wiadomości e-mail z adresu<span class="Apple-converted-space"> </span><a href="mailto:oliver.terbu@mattr.global">oliver.terbu@mattr.global</a>.<span class="Apple-converted-space"> </span><a href="https://aka.ms/LearnAboutSenderIdentification">Dowiedz
się, dlaczego jest to ważne</a></div>
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Sorry but I think wrt c_nonce, the following summary might be more accurate (as found here<a href="https://github.com/openid/OpenID4VCI/issues/331#issuecomment-2161515537" originalsrc="https://github.com/openid/OpenID4VCI/issues/331#issuecomment-2161515537" shash="nLAXtoz6DUAb8h0oPZ8Egh29Ds6bqYvX8yXKqTeR9RKgOExPkn8bfv6iw8LbySkVhPHMAZCTq4cwZfD1rFnCSlg69SXEgHuZXzaUiIWwhaIzOf2nKnWyrkgC5knWvFlgv5BGAPinIMQI4fP1arx2/BNpXLBOUQotdQg3Vsk4iQ0=" id="LPlnk">https://github.com/openid/OpenID4VCI/issues/331#issuecomment-2161515537</a>):</div>
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<a target="_blank" id="LPImageAnchor258655" href="https://github.com/openid/OpenID4VCI/issues/331#issuecomment-2161515537" originalsrc="https://github.com/openid/OpenID4VCI/issues/331#issuecomment-2161515537" shash="dI2+uPyITRmtoQcKfkUgeAfasSBXmb2rli0c4C0l/RWXc1/mHL6riTFDbMmCp++YLHtpbh9+itIf9ayakEVKbyyv8GnQh0xs3KD/wjvveH3ZpJmMTM9hoZ8X35w9MR4IsqiRKKR1tx303NmaB1DGP7mv9h6YGaYEVifXAxDVldY="><img id="LPThumbnailImageId258655" alt="" height="120" width="240" src="https://opengraph.githubassets.com/06d325e97524fcd50795eba1474d919200b5c6a5527e5442e65826eaf00fc33c/openid/OpenID4VCI/issues/331" style="display: block;"></a></div>
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<a target="_blank" id="LPUrlAnchor258655" href="https://github.com/openid/OpenID4VCI/issues/331#issuecomment-2161515537" originalsrc="https://github.com/openid/OpenID4VCI/issues/331#issuecomment-2161515537" shash="PtdTDVcIuncKPg+wpG7HRsyPcPPhdn5DfMJdnnqLGh66OaWcT/MUf5Oho89XpItlQdh+qofRVQhvxFNLWSHk1K5AfsAsXHauY1K21+phlQD1ZXgeoNVAAeagflV/te7eiR0+ERFJjiH209UeOQiTQ5wgxj+FC4AMh+fV4GRKuBk=" style="text-decoration: none; color: var(--themePrimary);">Is
c_nonce required in proof or not? · Issue #331 · openid/OpenID4VCI</a></div>
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Nonces in proof types are OPTIONAL but the following sentence confused me: The proof element MUST incorporate the Credential Issuer Identifier (audience), and a c_nonce value generated by the Autho...</div>
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<a href="http://github.com/">github.com</a></div>
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<span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">no c_nonce from the token endpoint.</span></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; margin-top: 0.25em; margin-left: 0px;">
<span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">c_nonce from the credential endpoint is optional. returned in the credential error response if needed.</span></li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; margin-top: 0.25em; margin-left: 0px;">
<span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">is attack in<span class="Apple-converted-space"> </span></span><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: var(--base-text-weight-semibold, 600);"><u><a href="https://github.com/openid/OpenID4VCI/issues/19" originalsrc="https://github.com/openid/OpenID4VCI/issues/19" shash="Uhl78PGL/ClQLlRZkiWOVFH7bAgiWEwRkTStjiqNAzB89//9cf0vZUM1rYwI3mn/kaWrRlYY9zmPPM7epMliPLhS2iG7ppzIXj3EFe9MMRnAKjbjB4mOtJsxTO2cV+GP38vW6jiSfnqiRYc91QERP0hcsmPpcTZWRWZLvYcuBLk=" id="OWA01fa3a88-868f-8557-8373-ae17a4275858" class="issue-link js-issue-link OWAAutoLink" data-error-text="Failed to load title" data-id="1877183628" data-permission-text="Title is private" data-url="https://github.com/openid/OpenID4VCI/issues/19" data-hovercard-type="issue" data-hovercard-url="/openid/OpenID4VCI/issues/19/hovercard" style="">VC
Issuance is vulnerable to Unknown Key Share attacks</a></u></span><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: var(--base-text-weight-normal, 400);"><u><a href="https://github.com/openid/OpenID4VCI/issues/19" originalsrc="https://github.com/openid/OpenID4VCI/issues/19" shash="I0ggsYFYIaSMR2F23EMP0hAbj2lZdvdh1jtn6M3uTn8b7bND8qJHjTBW2zC0vwV5NbNrtnBeBlsu67+WoElgObZdJcVQnRkzm5i91IgGai7DLcs/n/tMI7wE5YRDVGznOGhoQRmwR8Frb+yqkLH8F6Th8BS/mB5SZf197tAFkk4=" id="OWA01fa3a88-868f-8557-8373-ae17a4275858" class="issue-link js-issue-link OWAAutoLink" data-error-text="Failed to load title" data-id="1877183628" data-permission-text="Title is private" data-url="https://github.com/openid/OpenID4VCI/issues/19" data-hovercard-type="issue" data-hovercard-url="/openid/OpenID4VCI/issues/19/hovercard" style=""> #19</a></u></span><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;"> worth
protecting against? if yes,<span class="Apple-converted-space"> </span></span><span style="font-family: var(--fontStack-monospace, ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace); font-size: 12pt;"><code style="font-family: var(--fontStack-monospace, ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace);">ath</code></span><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;"> probably
makes sense. if not no need. -> direction seems to be making ath mandatory.</span></li></ol>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size: 11pt;"><b>From:</b><span class="Apple-converted-space"> </span>Openid-specs-digital-credentials-protocols <<a href="mailto:openid-specs-digital-credentials-protocols-bounces@lists.openid.net">openid-specs-digital-credentials-protocols-bounces@lists.openid.net</a>>
on behalf of Lukasz Jaromin via Openid-specs-digital-credentials-protocols <<a href="mailto:openid-specs-digital-credentials-protocols@lists.openid.net">openid-specs-digital-credentials-protocols@lists.openid.net</a>><br>
<b>Sent:</b><span class="Apple-converted-space"> </span>Tuesday, June 11, 2024 10:05 PM<br>
<b>To:</b><span class="Apple-converted-space"> </span><a href="mailto:openid-specs-digital-credentials-protocols@lists.openid.net">openid-specs-digital-credentials-protocols@lists.openid.net</a><span class="Apple-converted-space"> </span><<a href="mailto:openid-specs-digital-credentials-protocols@lists.openid.net">openid-specs-digital-credentials-protocols@lists.openid.net</a>><br>
<b>Cc:</b><span class="Apple-converted-space"> </span>Lukasz Jaromin <<a href="mailto:lukasz.jaromin@raidiam.com">lukasz.jaromin@raidiam.com</a>><br>
<b>Subject:</b><span class="Apple-converted-space"> </span>[Openid-specs-digital-credentials-protocols] Notes DCP WG + SIOP meeting minutes: Jun 11, 2024</font>
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Hi All,</div>
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Please find the meeting notes below.</div>
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Attendees: <span class="x_Apple-tab-span" style="white-space: pre;"> </span></div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Kristina Yasuda</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Jan Vereecken</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Oliver Terbu</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Elizabeth Garber</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Paul Bastian</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Sudesha Shetty</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Lukasz Jaromin</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Victor Lu</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Daniel Fett</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Michael Jones</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Brian Campbell</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Christian Bormann</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Tobias Looker</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- John Bradley</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Tom Jones</div>
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<span class="x_Apple-tab-span" style="white-space: pre;"></span>- Sebastien Bahloul</div>
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Agenda:</div>
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Announcement to help with PRs. The number of issues is growing. </li><li style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: "Helvetica Neue"; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;">
PRs and Issues. Call for specific PRs and/or issues that we should discuss? </li><ol>
<li style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: "Helvetica Neue"; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;">
Batch credentials</li><li style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: "Helvetica Neue"; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;">
c_nonce issue</li></ol>
</ol>
<div style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: "Helvetica Neue"; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;">
Issues</div>
<ul style="list-style-type: "— ";">
<li style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: "Helvetica Neue"; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;">
<span style="font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;"></span>VCI
#286 Encrypted responses in Batch and Deferred Endpoint<span class="Apple-converted-space"> </span><a href="https://github.com/openid/OpenID4VCI/issues/286" originalsrc="https://github.com/openid/OpenID4VCI/issues/286" shash="nVqJ1jQulS3miL63NsJWGik6AOju2T9kRFCJ8r33qa7pcL/Gt8ShSCqUsMgt+vgCRfVoKFjZ/vdouDnqfQPFd9BNmzRkc+brEO+HGzOe2M7q9cOmekwPssQ5UUwQHdBWzx3Z9WKP01QF48jtHwcblCMlR85XBgVsYxxPJIt5U6o="><span style="color: rgb(220, 161, 13);">https://github.com/openid/OpenID4VCI/issues/286</span></a><span class="Apple-converted-space"> </span>discussion
on whether we do encryption</li><li style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: "Helvetica Neue"; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;">
<span style="font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;"></span>VCI
#189 Move Use Cases Appendix before Acknowledgements and Notices<span class="Apple-converted-space"> </span><a href="https://github.com/openid/OpenID4VCI/issues/189" originalsrc="https://github.com/openid/OpenID4VCI/issues/189" shash="RSJm4o75IRBCnkGFHBkuisUlWp0cV7HW+qnehdn6qHJepUBrb2cmQrNWOF45snfuos3jnLugDzwpYA7NeGx7lJK23SC00Rz108dDM8SA5YoGyfh+AXs4prftJ5sMSLmFF3GnEJfct1oaZntqrF4UAbHkIJchZLqCANg+akMjHPY="><span style="color: rgb(220, 161, 13);">https://github.com/openid/OpenID4VCI/issues/189</span></a><span class="Apple-converted-space"> </span>Q:
Any objection to do that? Yes</li><li style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: "Helvetica Neue"; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;">
<span style="font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;"></span>VCI
#233 Examples of signed JWTs do not always have valid signatures<span class="Apple-converted-space"> </span><a href="https://github.com/openid/OpenID4VCI/issues/233" originalsrc="https://github.com/openid/OpenID4VCI/issues/233" shash="Dfdjwcn0LLczVVssisSTTmkXHsT1MITgcyTKt7WnXLhMGA/klijtUHvPWuQzNVR5kbVKlvNgsx08R0F7/kA2ijudJ8BTW296SuPjM4o2hfxIxqN2luldR/BPw41NOXPPHjARvMbES1ICMr5hBwz7YOyim2gzwQbdM4tjYv4rfbk="><span style="color: rgb(220, 161, 13);">https://github.com/openid/OpenID4VCI/issues/233</span></a><span class="Apple-converted-space"> </span>We
move on with it and have a volenteer wants to do it.</li><li style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: "Helvetica Neue"; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;">
<span style="font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;"></span>VCI
Pull #293 rework credential and batch credential endpoint <span class="Apple-converted-space"> </span><a href="https://github.com/openid/OpenID4VCI/pull/293" originalsrc="https://github.com/openid/OpenID4VCI/pull/293" shash="w9lUfJZHO0J20Y/htRy2qQ8OZY7bbWpzFzWtiKLfeAAEr2bp9mJ5z81ifKLcPxaY+L6jaO/QyKXoRwXTP1vXQ9f5IghEu6eDkZM509h2kyCKfguaTNmq2GmfzCNzD0stcrFMuMZRTPz/YgXeI+G9eDzZGZQqfV1dNKBTG5gA/k4="><span style="color: rgb(220, 161, 13);">https://github.com/openid/OpenID4VCI/pull/293</span></a><span class="Apple-converted-space"> </span>Please
review it. It will be merged if there are two more approvals. Additional comments: PR is going to be merged, however this happens conditionally provided that we will discuss VCI Issue #18. Tobias will create the issue to addresses the problem of an array with
a single proof.</li><li style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: "Helvetica Neue"; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;">
<span style="font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;"></span>VCI
pull #336 add randomness to the credential_offer_uri<span class="Apple-converted-space"> </span><a href="https://github.com/openid/OpenID4VCI/pull/336" originalsrc="https://github.com/openid/OpenID4VCI/pull/336" shash="iu4Z9eCoKHN623yM5Iqe1lLMQFkVBK9UMjWkjkNXuDOQ0IndfK2xPs5e+vfV81BCyLRg2IZX7402Ar2jib5io8NYENB1entbJDvWhJbzJ5n7d2ZcLADTj22VDv5+BE+/0XsVTATuDynWoM5iNjAxDIyASLQZGs5LjNLEVNa2E1k="><span style="color: rgb(220, 161, 13);">https://github.com/openid/OpenID4VCI/pull/336</span></a><span class="Apple-converted-space"> </span>is
ready to be merged</li><li style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: "Helvetica Neue"; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal; color: rgb(220, 161, 13);">
<span style="font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;"></span><span style="">VCI
Issue<span class="Apple-converted-space"> </span><a href="https://github.com/openid/OpenID4VCI/issues/301" originalsrc="https://github.com/openid/OpenID4VCI/issues/301" shash="jat74LTdV0FlmZGYltu7rw5IdDCKj9z0Jh9VJEsOKP18ErfGJI050T5d/73FQ5InjlyKW3gSjs7V3OX8G4Ps1W9iK33rPY1L+Sniez1U6pRfsmLtMZBqwGikTPmUP6ulFcLat6yAnF8OScr29yYe+lglvZ46BCEYiXtO9tuSg6k=">https://github.com/openid/OpenID4VCI/issues/301</a><span class="Apple-converted-space"> </span>We
will add clarification on it.</span></li><li style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 13px; line-height: normal; font-family: "Helvetica Neue"; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;">
<span style="font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-feature-settings: normal;"></span>Olivier
explains c_nonce related issue <span class="Apple-converted-space"> </span><a href="https://github.com/openid/OpenID4VCI/issues/331" originalsrc="https://github.com/openid/OpenID4VCI/issues/331" shash="gA2rzSxg9JeVQi4e6nSRUnJgoPbezfPNRiFXba1RXplvPbF8hSyEz8Yzo9OAP+xJSoMVKumo3B8OPte+nOuBTjWIoqs6eCLC/yIfereVVYP8ENuxn3bz3x80+vrNhCVVbTpWFSvUd6iLCZAGeU/jG9e/6Qv98lwxAOz5wWX2yB0="><span style="color: rgb(220, 161, 13);">https://github.com/openid/OpenID4VCI/issues/331</span></a><span class="Apple-converted-space"> </span>Discussion
whether we need c_nonce or not. We looked at<span class="Apple-converted-space"> </span><a href="https://github.com/openid/OpenID4VCI/issues/19" originalsrc="https://github.com/openid/OpenID4VCI/issues/19" shash="kt8dANJM51790r+k+MesOZam1l9fJLRhTg6jNesqmbCuU/Xum5BWWEHB1Ah9nCzORHhgIM2t/Wu+XWM8soVihj8ND/hR2u9AfSZ7ieJxLzbtQP43aGA/KWssP5ggVm/1nL9Y/nGp7M+NJfYrCn+naxUqBZ24SdPkAeK4zAwe3wI="><span style="color: rgb(220, 161, 13);">https://github.com/openid/OpenID4VCI/issues/19</span></a><span class="Apple-converted-space"> </span>while
talking about it. The group is leaning towards keeping the c_nonce as required.</li></ul>
<div><font face="Helvetica Neue" size="2">Regards</font></div>
<div><font face="Helvetica Neue" size="2">LJ</font></div>
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