tree 5b9cc395bef23bf12be74a7dfa2d2f9d9da9f5c0
parent 1e6bfdff5eb0e3d0b50acd3416ce4545aa5c3d46
author Gilles Peskine <Gilles.Peskine@arm.com> 1531694189 +0200
committer itayzafrir <itay.zafrir@arm.com> 1536759672 +0300

HMAC: improve robustness checks on hash/block size

In psa_mac_setup and psa_hmac_setup_internal, perform a sanity check
on the hash size and the hash block size respectively. These sanity
checks should only trigger on an incompletely or incorrectly
implemented hash function.

Remove the check on the block size in psa_hmac_finish_internal
because at this point it has already been checked and used.