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[release/11.0] KEM support for EnvelopedCms - #134310

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artl93 merged 1 commit into
release/11.0from
backport/pr-133046-to-release/11.0
Sep 21, 2026
Merged

artl93 merged 1 commit into
release/11.0from
backport/pr-133046-to-release/11.0

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@github-actions github-actions Bot commented Sep 20, 2026 •

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Backport of #133046 to release/11.0

/cc @vcsjones

Customer Impact

  • Customer reported
  • Found internally

This is a post quantum algorithm addition to EnvelopedCms - ML-KEM.

Regression

  • Yes
  • No

Testing

Existing tests ensure existing functionality continues to pass. New tests were added for the new functionality.

Risk

Low. New functionality and changes to existing functionality is minimal.

This implements ML-KEM and Composite ML-KEM API surface for EnvelopedCms. For the managed implementation, this implements ML-KEM entirely per RFC 9936.

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Tagging subscribers to this area: @bartonjs, @vcsjones, @dotnet/area-system-security
See info in area-owners.md if you want to be subscribed.

@bartonjs
bartonjs requested a review from artl93 September 20, 2026 22:28
@artl93 artl93 added the Servicing-approved Approved for servicing release label Sep 21, 2026

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PQC. Apporved.

@vcsjones / @bartonjs - please check build analysis.

@vcsjones

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/ba-g failures are unrelated

@artl93
artl93 merged commit b0a953f into release/11.0 Sep 21, 2026
136 of 140 checks passed
@artl93
artl93 deleted the backport/pr-133046-to-release/11.0 branch September 21, 2026 16:35
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3 participants