Herbert Xu 493b2ed3f7 crypto: algif_hash - Handle NULL hashes correctly
Right now attempting to read an empty hash simply returns zeroed
bytes, this patch corrects this by calling the digest function
using an empty input.

Reported-by: Russell King - ARM Linux <linux@armlinux.org.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-09-07 21:08:28 +08:00
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