powerpc/crypto: Use cheaper random numbers for crc-vpmsum self-test

Browse source

This code was filling a 64K buffer from /dev/urandom in order to
compute a CRC over (on average half of) it by two different methods,
comparing the CRCs, and repeating.

This is not a remotely security-critical application, so use the far
faster and cheaper prandom_u32() generator.

And, while we're at it, only fill as much of the buffer as we plan to use.

Signed-off-by: George Spelvin <lkml@sdf.org>
Acked-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

...

This commit is contained in:

George Spelvin 2019-03-21 10:42:22 +00:00 • committed by Michael Ellerman

parent 6917735e8f

commit 80d04b7fab

1 changed files with 3 additions and 7 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

10

arch/powerpc/crypto/crc-vpmsum_test.c

View file