feat(fw): add InitBk3 firmware handler with masked key codec#372
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feat(fw): add InitBk3 firmware handler with masked key codec#372jaygmsft wants to merge 2 commits into
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vsonims
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vsonims
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Adds the firmware-side InitBk3 DDI handler that masks a 48-byte BK3 against the partition's 80-byte BK_BOOT using AES-CBC-256 + HMAC-SHA-384 (encrypt-then-MAC), producing an mcr-hsm-compatible 244-byte MaskedKey wire-format blob. New crate fw/core/crypto/masked-key/ hosts the wire format and encode logic. Public surface: - mask_cbc(pal, io, masking_key, plaintext, metadata, out) - MASKING_KEY_AES_CBC_256_HMAC_384_LEN The encoder uses zerocopy-derived #[repr(C)] header structs as the single layout-of-truth and writes the blob directly into a caller- supplied DMA buffer (zero-init precondition checked via plaintext staging. Also includes: - fw/core/ddi/mbor/types/src/masked_key.rs: DdiMaskedKeyMetadata - Integration smoke tests in ddi/lib/tests/integration/init_bk3_smoke.rs - Copyright/format fixes in unrelated touched crypto files Validated: - 4/4 init_bk3 smoke tests pass against emu - 10/10 emu smoke tests pass - fmt + copyright clean Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Add the InitBk3 DDI command handler and supporting infrastructure for BK3 initialization and masked key operations.
New modules:
PAL changes:
DDI integration test results with --features emu (566 total):
32 passed, 534 failed, 0 skipped
DDI smoke test results with --features emu (9 total):
9 passed, 0 failed, 0 skipped