s390/crypto: simplify CPACF encryption / decryption functions

Browse source

The double while loops of the CTR mode encryption / decryption functions
are overly complex for little gain. Simplify the functions to a single
while loop at the cost of an additional memcpy of a few bytes for every
4K page worth of data.
Adapt the other crypto functions to make them all look alike.

Reviewed-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

...

This commit is contained in:

Martin Schwidefsky 2016-08-15 15:17:52 +02:00

parent 69c0e360f9

commit 7bac4f5b8e

2 changed files with 136 additions and 214 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

196

arch/s390/crypto/aes_s390.c

View file

168

arch/s390/crypto/des_s390.c

View file