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<div>Hi Guys,</div>
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<div>I have been reviewing the Mobile Connect Profile doc released by the GSMA. There are some parameters in the authentication request, id_token and userinfo that have changed their use from optional to recommend or mandatory (These cases are showed in green).
I don't think it is a problem to turn an optional parameter into mandatory in responses (id_token or userinfo), but I would like to highlight the cases where the spec says that the parameters are optional in the authentication request and the Mobile Profile
says that they are mandatory, because I think they break the backward compatibility of the OIDC servers unless we can to differentiate the mobile profile requests from the other requests.</div>
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<div>PARAMETER<span class="Apple-tab-span" style="white-space:pre"> </span>SPEC<span class="Apple-tab-span" style="white-space:pre">
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<div>state<span class="Apple-tab-span" style="white-space:pre"> </span>Recommended<span class="Apple-tab-span" style="white-space:pre">
</span>Mandatory</div>
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<div>nonce<span class="Apple-tab-span" style="white-space: pre; "> </span>Recommended<span class="Apple-tab-span" style="white-space: pre; ">
</span>Mandatory</div>
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<div>prompt<span class="Apple-tab-span" style="white-space: pre; "> </span>Recommended<span class="Apple-tab-span" style="white-space: pre; ">
</span>Mandatory</div>
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<div>max_age<span class="Apple-tab-span" style="white-space: pre; "> </span>Recommended<span class="Apple-tab-span" style="white-space: pre; ">
</span>Mandatory</div>
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<div>acr_values<span class="Apple-tab-span" style="white-space: pre; "> </span>Recommended<span class="Apple-tab-span" style="white-space: pre; ">
</span>Mandatory</div>
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<div>I understand that state and nonce offer and added value from the point of view of security, however I don't see the benefit of the acr_values as mandatory parameter.</div>
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<div>Best,</div>
<div>Gonza.</div>
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