commit ce6dd368984068c8938e8d3fba8e292ef63cee97
author Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Sat Jun 09 18:25:40 2012 +0300
committer Herbert Xu <herbert@gondor.apana.org.au> Thu Jun 14 10:07:21 2012 +0800
tree daf864115070eff01607912162f8d31fbb6b87da
parent 31b4cd2907322bd56e4090168e4ce8f8dcd17820

crypto: arc4 - improve performance by adding ecb(arc4)

Currently arc4.c provides simple one-byte blocksize cipher which is wrapped
by ecb() module, giving function call overhead on every encrypted byte. This
patch adds ecb(arc4) directly into arc4.c for higher performance.

tcrypt results (speed ratios: new/old):

AMD Phenom II, x86-64 : x2.7
Intel Core 2, x86-64  : x1.9
Intel Atom N260, i386 : x1.4

Cc: Jon Oberheide <jon@oberheide.org>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>