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feat(verifier): add VersionedEvidence trait for TEE evidence versioning - #1596

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lmilleri:evidence-versioning
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feat(verifier): add VersionedEvidence trait for TEE evidence versioning#1596
lmilleri wants to merge 1 commit into
confidential-containers:mainfrom
lmilleri:evidence-versioning

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Introduce a shared VersionedEvidence trait giving every TEE verifier a consistent way to declare its evidence version and reject unsupported versions with a uniform, user-facing error message.

Each TEE keeps its own evidence structure; the trait only standardizes version handling via version(), tee_name(), max_supported_version() and the provided validate_version(). It is meant to back the untagged V1/V0 enum pattern (newest first, fall back to legacy) already used by az_snp_vtpm.

  • Add deps/verifier/src/versioned.rs (trait + unit tests)
  • Export it from lib.rs as pub mod versioned

Refs: #1412

Introduce a shared VersionedEvidence trait giving every TEE verifier a
consistent way to declare its evidence version and reject unsupported
versions with a uniform, user-facing error message.

Each TEE keeps its own evidence structure; the trait only standardizes
version handling via version(), tee_name(), max_supported_version() and
the provided validate_version(). It is meant to back the untagged V1/V0
enum pattern (newest first, fall back to legacy) already used by
az_snp_vtpm.

- Add deps/verifier/src/versioned.rs (trait + unit tests)
- Export it from lib.rs as `pub mod versioned`

Refs: confidential-containers#1412

Signed-off-by: Leonardo Milleri <lmilleri@redhat.com>

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
@lmilleri
lmilleri marked this pull request as ready for review August 27, 2026 10:17
@lmilleri
lmilleri requested a review from a team as a code owner August 27, 2026 10:17
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