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2019-02-13If a KEK is given to keywrap/unwrap, zero it out of the keywrap core after use.Paul Selkirk
The key-export mechanism unwraps the key with the KEK from Master Key Memory, then re-wraps it with a random KEK. If that random KEK stays in the keywrap core, it will cause problems for all subsequent wrap/unwrap operations.
2019-02-12Track Joachim's latest keywrap core - KEK remains in the AES core until it ↵Paul Selkirk
times out or is explicitly zeroed out.
2018-09-11Track Joachim's latest keywrap core - unroll bank-switched memory into a ↵Paul Selkirk
number of core register blocks.
2018-08-16Correct the limit on memory banks in the keywrap core.Paul Selkirk
2018-08-15Add support for Joachim's keywrap core.Paul Selkirk
2018-07-31Add hashsig description to READMEPaul Selkirk
2018-07-25Merge branch 'hashsig'Paul Selkirk
2018-07-24Change the rest of the hashsig ASN.1 wrapper functions to static inline, for ↵Paul Selkirk
consistency.
2018-07-24A recent(?) version of arm-none-eabi-gcc decided to make storage for enumsPaul Selkirk
the minimum size necessary, so hal_asn1_decode_lms_algorithm and hal_asn1_decode_lmots_algorithm were writing 4 bytes of data into 1-byte variables. Hilarity ensued. Yes, I already knew that conflating enum with uint32_t was a bad idea, I was just being lazy. For that matter, sizeof(size_t) isn't guaranteed either, although arm-none-eabi-gcc treats it as 32 bits on this 32-bit target (for now), so exercise proper data hygiene in hal_asn1_decode_size_t as well.
2018-07-24Add protection against trying to use hashsig while the restart mechanism is ↵Paul Selkirk
rebuilding the tree.
2018-07-24Housekeeping: Mark hal_ks_pin_uuid extern, so it doesn't get instantiated in ↵Paul Selkirk
each object module.
2018-07-24Add descriptions of signature algorithm OIDs, because pre-encoded ASN.1 ↵Paul Selkirk
blobs are really inscrutable.
2018-07-16No-op out core alloc/free when no cores exist.Rob Austein
2018-07-15Support PF_UNIX socket inode modes other than 0600.Rob Austein
2018-05-27Inline hal_core_base().Rob Austein
2018-05-27FMC cleanup: constification, gratuitous pointer.Rob Austein
2018-05-22Disable seldom-used FMC I/O debugging code by default.Rob Austein
Profiling reports significant time spent in the hal_io_fmc.c debugging code even when runtime debugging is off. This is odd, and may be a profiling artifact, but we don't use that debugging code often, so if it costs anything at all we might as well disable it when not needed.
2018-05-20Drop <assert.h> now that everything should be using hal_assert() instead.Rob Austein
2018-05-20Better hal_core_alloc() semantics, assert() and printf() cleanup.Rob Austein
Various fixes extracted from the abandoned(-for-now?) reuse-cores branch, principally: * Change hal_core_alloc*() to support core reuse and to pick the least-recently-used core of a particular type otherwise; * Replace assert() and printf() calls with hal_assert() and hal_log(), respectively. assert() is particularly useless on the HSM, since it sends its error message into hyperspace then hangs the HSM.
2018-05-20Clean up parallel signature test script.Rob Austein
Aside from not really needing to use every crayon in the box, using a simpler control structure makes exceptions behave more as one expects.
2018-05-20Add small cache for RSA blinding factors.Rob Austein
Generating new RSA blinding factors turns out to be relatively expensive, but we can amortize that cost by maintaining a small cache and simply mutating old values after each use with a cheaper operation. Squaring works, pretty much by definition. Blinding factors are only sort-of-sensitive: we don't want them to leak out of the HSM, but they're only based on the public modulus, not the private key components, and we're only using them to foil side channel attacks, so the risk involved in caching them seems small. For the moment, the cache is very small, since we only care about this for bulk signature operations. Tune this later if it becomes an issue.
2018-05-20Silence compiler warning in revised hal_ks_fetch().Rob Austein
2018-05-19Release keystore lock before unwrapping key.Rob Austein
hal_ks_fetch() was written as lock-at-the-top, unlock-at-the-bottom to keep it as simple as possible, but this turns out to have bad performance implications when unwrapping the key is slow. So now we grab the wrapped key, release the lock, then unwrap, which should be safe enough given that hal_ks_fetch() is read-only. This lets us make better use of multiple AES cores to unwrap in parallel when we have multiple active clients.
2018-05-01Add some yields to try to improve responsiveness during hashsig key ↵Paul Selkirk
generation and deletion.
2018-04-19Merge branch 'profiling' into hashsigPaul Selkirk
2018-04-19Rebase hashsig from masterPaul Selkirk
2018-04-19Reconstruct the hashsig hash tree(s) on device restart.Paul Selkirk
2018-04-19Update to draft-10: clarifications and Test Case 2;Paul Selkirk
add ability to export public key to xdr for interop testing
2018-04-19For 2^w and 2^h, replace hard-coded w2 and h2 values with 1<<w and 1<<h.Paul Selkirk
2018-04-19Add Test Case 2 from draft-mcgrew-09Paul Selkirk
2018-04-19Fold the coef* functions into a single function, because that really was ↵Paul Selkirk
premature optimization.
2018-04-19Fix coef4, which was swapping digitsPaul Selkirk
2018-04-19Implement hash-based signatures, per draft-mcgrew-hash-sigs-08.txtPaul Selkirk
2018-04-19Add hal_ks_availablePaul Selkirk
2018-04-19Encode/decode uint32_t and octet stringsPaul Selkirk
2018-04-19Clean up RPC code, track changes to XDR API.Paul Selkirk
2018-04-19Refactor XDR code, add support for fixed-length opaque data.Paul Selkirk
2018-04-19Reconstruct the hashsig hash tree(s) on device restart.Paul Selkirk
2018-04-14Clean up definition of HAL_KS_WRAPPED_KEYSIZE.Rob Austein
2018-03-30More accurate timing.Rob Austein
2018-03-30Tweak report output.Rob Austein
Copy ContextManagedUnpacker from latest version of libhal.py so that this script won't depend on the current development code.
2018-03-30First cut at parallel signature timing test.Rob Austein
At the moment this only handles RSA keys, and can only handle one size of key at a time. More bells and whistles will follow eventually, now that the basic asynchronous API to our RPC protocol works.
2018-03-25Clear search state variables in rsa.c's find_prime().Rob Austein
Failing to clear the temporary buffer used to transfer bits from the TRNG into a bignum was a real leak of something very close to keying material, albeit only onto the local stack where it was almost certain to have been overwritten by subsequent operations (generation of other key components, wrap and PKCS #8 encoding) before pkey_generate_rsa() ever returned to its caller. Still, bad coder, no biscuit. Failing to clear the remainders array was probably harmless, but doctrine says clear it anyway.
2018-03-21Supply our own context manager instead of using contextlib.Rob Austein
contextlib is cute, but incompatible with other coroutine schemes like Tornado, so just write our own context manager for xdrlib.Unpacker.
2018-03-15Update to draft-10: clarifications and Test Case 2;Paul Selkirk
add ability to export public key to xdr for interop testing
2018-03-10For 2^w and 2^h, replace hard-coded w2 and h2 values with 1<<w and 1<<h.Paul Selkirk
2018-03-10Add Test Case 2 from draft-mcgrew-09Paul Selkirk
2018-03-10Fold the coef* functions into a single function, because that really was ↵Paul Selkirk
premature optimization.
2018-03-10Fix coef4, which was swapping digitsPaul Selkirk
2018-02-27Implement hash-based signatures, per draft-mcgrew-hash-sigs-08.txtPaul Selkirk
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