feat: add RS256 signing keys backed by AWS KMS#2571
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cstockton
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I think this is a good start but do see the need for some changes here.
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🤖 I have created a release *beep* *boop* --- ## [2.191.0](v2.190.0...v2.191.0) (2026-06-17) ### Features * add RS256 signing keys backed by AWS KMS ([#2571](#2571)) ([983f59a](983f59a)) * **saml:** support zero-downtime SP key rotation ([#2575](#2575)) ([5b95ff8](5b95ff8)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: supabase-releaser[bot] <223506987+supabase-releaser[bot]@users.noreply.github.com>
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Adds support for RSA signing keys backed by AWS KMS, which are the cheapest type of key.
You specify
aws:kms:arnas a claim in the private key's JWK and it all flows from there. It uses the ambient credentials of the process to talk to KMS.