feat: add simulated CCA attester #4
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shefali-kamal wants to merge 2 commits into
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thomas-fossati
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Jul 17, 2026
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Excellent contribution, thanks!
I have left a few comments inline for your consideration -- none of which are blocking.
| use ciborium::Value as CborValue; | ||
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| impl From<PlatformClaims> for CborValue { | ||
| #[allow(clippy::vec_init_then_push)] |
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just a curiosity: why is this needed here and not in the (very similar) RealmClaims (around L199)?
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Clippy only flags PlatformClaims because it has five consecutive pushes before any conditional field. RealmClaims branches early with an if let Some(profile) after the first push, so clippy doesn't trigger there. No functional difference - just clippy heuristics.
- Replace the old FakeTsmBuilder with SimulatedTokenBuilder that constructs real CBOR tag 399 tokens from JSON claims and JWK keys - Add encode_cca_token() for building CCA tokens with two COSE_Sign1 signatures (platform + realm) using ES384 on P-384 - Add CcaSimulatedAttester implementing the Attester trait - Add CcaRatsdAttester that posts to RATSD and parses the CMW envelope - Add crypto helpers: load_p384_jwk, build_rak_cose_key, sign_cose_sign1, is_supported_hash_alg, compute_hash - Add serde-enabled CCA token types with CBOR conversions - Add decode_cca_token() and pretty_print_token() utilities - Add CBOR key constants per the Arm CCA attestation token spec - Switch cmw dependency from git to crates.io v0.1.1 Signed-off-by: BISWAS, SREYAN <SREYAN.BISWAS@fujitsu.com>
Signed-off-by: Dhanus M Lal <Dhanus.MLal@fujitsu.com>
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Thanks for addressing all my comments. This looks ready to ship. |
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Replaces the old static-blob FakeTsmBuilder with a real SimulatedTokenBuilder that builds spec-compliant CCA tokens (CBOR tag 399) from JSON claims and JWK keys signed with ES384. No hardware or RATSD daemon needed.