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Feat/108 request object signing algs - #120

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patchandthat merged 4 commits into
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feat/108-request-object-signing-algs
Oct 19, 2026
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patchandthat merged 4 commits into
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feat/108-request-object-signing-algs

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Description

Closes #108. Emits the request_object_signing_alg_values_supported property in the discovery document, and validates jwt request signatures with respect to the list. Defaults to RS256, RS384, RS512, PS256, PS384, PS512, ES256, ES384 and ES512.

Type of change

  • Bug fix
  • Feature
  • Refactoring
  • Documentation
  • Other

Does this PR introduce a breaking change?

Does the change cause a breaking change to any of the following?

  • Changes to existing public APIs or DB schema
  • Changes which could cause existing behaviour to fail (eg. feature restrictions, changes to default values, stricter validation, etc)

Breaking behaviour for request objects signed with HSXXX symmetric keys, which really shouldn't be used anyway.
Previous behaviour can be restored by clearing the SupportedJwtRequestSigningAlgorithms collection, or adding the additional algorithms on startup.

Testing

New tests added.

LLM Usage

Please describe where and how you have used LLM tooling in relation to these changes.
Note: We want all code changes in the shippable nuget packages to be human authored. LLM usage elsewhere is acceptable, you are expected to thoroughly scrutinise any generated content.

Used in generating tests.

Other context

Please include any other contextual information to support this change, if necessary.
eg. Instructions for testing and validating the code, any necessary dependencies or environmental setup

@patchandthat
patchandthat merged commit 2d3bdf2 into main Oct 19, 2026
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@patchandthat
patchandthat deleted the feat/108-request-object-signing-algs branch October 19, 2026 12:33
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Advertise supported request object signing types.

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