If an error occurs, calling any function on the same operation should return
PSA_ERROR_BAD_STATE, and we were not honouring that for all errors. Add extra
failure tests to try and ratify this.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
For sign and verify, the pointer passed in to the hash is not guaranteed to
remain valid inbetween calls, thus we need to store the hash in the
operation. Added a test to ensure this is the case.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Make it clear that these functions reset the number of ops, and remove
statements that say they have no effect.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Test for not having determnistic ECDSA was also being run when no ECDSA, and
this fails earlier. Fixed this and added a specific test for no ECDSA. Also
fixed (swapped) incorrect test descriptions.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Also make previous changes apply to both interruptible sign hash operation
structures rather than just the one as it was.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Test for unsupported deterministic ECDSA was originally passing due to
incorrect code, fixing the code unfortunately broke the test.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Only 2 options were really possible anyway - complete in 1 op, or somewhere
between 2 and max ops. Anything else we cannot test due to implementation
specifics.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Make sure the number of ops is tested in the interruptible failure tests,
should they get through the interruptible loop part.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Set the psa level global anyway, regardless of having a built in
implementation, to match the set function. Also, ensure that value returned
is the same as value passed in, irregardless of internal implementation
requirements.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Ensure that num_ops is cleared when manual abort is called, but obviously not
when an operation just completes, and test this.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Move to accumulate ops in context rather than attempting to read straight out
of structures due to structure ops getting reset per operation, and also
issues with _abort clearing internal data. Fix usage of size_t in structures
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Make public the versions of ECSDA sign and verify which return raw signatures
rather than returning ASN.1 encoded signatures, in order to use them for the
internal implemention of psa_sign/verify_hash_interruptible.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Apply the usual parameter name and align the local variables and
comments. This naming diverges from the standard notation, but this is
beneficial as our variable meanings diverge as well and the difference
can help avoiding confusion.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
It is not necessary to save the middle limb upfront as overwriting it is
the desired result: in the first step we are reducing modulo
2^{512+biL}.
Arguably, the original flow is more intuitive and easier to see the idea
behind it.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
