John Baldwin b0b2161ce4 Fix AES-CCM requests with an AAD size smaller than a single block.
The amount to copy for the first block is the minimum of the size of
the AAD region or the remaining space in the first block.

Reported by:	cryptocheck -z
MFC after:	2 weeks
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D25140
2020-06-12 21:33:02 +00:00
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