This commit fills out the JWT "kid" (KeyID) field on most serviceaccount tokens we create. The KeyID value we use is derived from the public key of keypair that backs the cluster's OIDC issuer. OIDC verifiers use the KeyID to smoothly cope with key rotations: * During a rotation, the verifier will have multiple keys cached from the issuer, any of which could have signed the token being verified. KeyIDs let the verifier pick the appropriate key without having to try each one. * Seeing a new KeyID is a trigger for the verifier to invalidate its cached keys and fetch the new set of valid keys from the identity provider. The value we use for the KeyID is derived from the identity provider's public key by serializing it in DER format, taking the SHA256 hash, and then urlsafe base64-encoding it. This gives a value that is strongly bound to the key, but can't be reversed to obtain the public key, which keeps people from being tempted to derive the key from the key ID and using that for verification. Tokens based on jose OpaqueSigners are omitted for now --- I don't see any way to actually run the API server that results in an OpaqueSigner being used. |
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hack | ||
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pkg | ||
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test | ||
third_party | ||
translations | ||
vendor | ||
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BUILD.bazel | ||
CHANGELOG-1.2.md | ||
CHANGELOG-1.3.md | ||
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CHANGELOG-1.6.md | ||
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CHANGELOG-1.8.md | ||
CHANGELOG-1.9.md | ||
CHANGELOG-1.10.md | ||
CHANGELOG-1.11.md | ||
CHANGELOG-1.12.md | ||
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CHANGELOG-1.14.md | ||
CHANGELOG-1.15.md | ||
CHANGELOG-1.16.md | ||
CHANGELOG.md | ||
code-of-conduct.md | ||
CONTRIBUTING.md | ||
go.mod | ||
go.sum | ||
LICENSE | ||
Makefile | ||
Makefile.generated_files | ||
OWNERS | ||
OWNERS_ALIASES | ||
README.md | ||
SECURITY_CONTACTS | ||
SUPPORT.md | ||
WORKSPACE |
Kubernetes

Kubernetes is an open source system for managing containerized applications across multiple hosts; providing basic mechanisms for deployment, maintenance, and scaling of applications.
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