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[spec] Add B&A k-anonymity fields #1360

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[spec] Add B&A k-anonymity fields #1360

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9c756e2
Add B&A k-anonymity fields
brusshamilton Dec 9, 2024
437f090
Fix typo in server aucthion ghost winner
brusshamilton Dec 17, 2024
9d4e3ca
Address comments
brusshamilton Feb 4, 2025
09d5577
Address comments
brusshamilton Feb 6, 2025
0b21420
Reference non-k-anonymous winning bid to the non-k-anon leading bid
brusshamilton Feb 10, 2025
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25 changes: 13 additions & 12 deletions spec.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -3468,8 +3468,8 @@ A <dfn>server auction response</dfn> is a [=struct=] that contains auction resul
: <dfn>selected buyer and seller reporting id</dfn>
:: Null or a [=string=], initially null. When not null, this will be verified with the winning bid's
[=generated bid/ad=]'s [=interest group ad/selectable buyer and seller reporting IDs=].
: <dfn>winner join candidates</dfn>
:: Null or [=server auction join candidates=]. When not null, contains the
: <dfn>winner join candidate</dfn>
:: Null or [=server auction join candidate=]. When not null, contains the
k-anonymity hashes corresponding to the winning bid and indicates which
k-anonymity hashes were used for k-anonymity enforcement on the server.
: <dfn>ghost winner</dfn>
Expand All @@ -3492,23 +3492,24 @@ A <dfn>server auction response</dfn> is a [=struct=] that contains auction resul
:: A [=map=] whose [=map/keys=] are [=origins=] and whose [=map/values=] are [=lists=] of [=urls=].
</dl>

<dfn>server auction join candidates</dfn> is a [=struct=] with the following [=struct/items=]:
<dl dfn-for="server auction join candidates">
<dfn>server auction join candidate</dfn> is a [=struct=] with the following [=struct/items=]:
<dl dfn-for="server auction join candidate">
: <dfn>ad render url hash</dfn>
:: A [=SHA-256=] hash of the [=k-anonymity key=] for the ad in the winning bid,
as calculated using [=compute the key hash of ad=].
: <dfn>ad component render url hashes</dfn>
:: A [=list=] of [=SHA-256=] hashes for each of the ad components in the
winning bid, as calculated using [=compute the key hash of component ad=].
:: A [=list=] of [=SHA-256=] hashes of [=k-anonymity keys=] for each of the ad
components in the winning bid, as calculated using
[=compute the key hash of component ad=].
: <dfn>reporting id hash</dfn>
:: A [=SHA-256=] hash of the [=k-anonymity key=] for the reporting ID in the
winning bid, as calculated using [=compute the key hash of reporting ID=].
</dl>

<dfn>server auction ghost winner</dfn> is a [=struct=] with the following [=struct/items=]:
<dl dfn-for="server auction ghost winner">
: <dfn>candidates</dfn>
:: [=server auction join candidates=] associated with this winner.
: <dfn>candidate</dfn>
:: [=server auction join candidate=] associated with this winner.
: <dfn>interest group owner</dfn>
:: An [=origin=]. The non-k-anonymous winning bid's interest group [=interest group/owner=].
: <dfn>interest group name</dfn>
Expand All @@ -3521,12 +3522,12 @@ A <dfn>server auction response</dfn> is a [=struct=] that contains auction resul
A <dfn>server auction ghost winner bid info</dfn> is a [=struct=] with the following [=struct/items=]:
<dl dfn-for="server auction ghost winner bid info">
: <dfn>ad render url</dfn>
:: [=URL=]. The [=leading bid info/leading non-k-anon-enforced bid=]'s [=generated bid/ad descriptor=]'s [=ad descriptor/url=] from the
auction.
:: A. [=URL=]. The [=leading bid info/leading non-k-anon-enforced bid=]'s
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[=generated bid/ad descriptor=]'s [=ad descriptor/url=] from the auction.
: <dfn>ad components</dfn>
:: A [=list=] of [=URLs=]. A list of the non-k-anonymous winning bid's
:: A [=list=] of [=URLs=]. A list of the [=leading bid info/leading non-k-anon-enforced bid=]'s
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[=generated bid/ad component descriptors=]'s [=ad descriptor/urls=] from the
auction.
server auction.
: <dfn>modified_bid</dfn>
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:: [=bid with currency=]. Contains the non-k-anonymous winning bid's [=generated bid/modified bid=]
when not null, otherwise the non-k-anonymous winning bid's [=generated bid/bid=].
Expand Down