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| author | Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | 2012-03-03 15:59:00 +0400 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2012-03-14 13:25:54 +0400 |
| commit | c9b56d33b03e9d5cd5f9d8598b56e9c84386844a (patch) | |
| tree | 6c9224ca235a9ef9aa662e4d104d67c56956915a /Documentation/dcdbas.txt | |
| parent | 894042648902d11d579af2a936a5a9a43cd5f1e4 (diff) | |
| download | linux-c9b56d33b03e9d5cd5f9d8598b56e9c84386844a.tar.xz | |
crypto: camellia - simplify key setup and CAMELLIA_ROUNDSM macro
camellia_setup_tail() applies 'inverse of the last half of P-function' to
subkeys, which is unneeded if keys are applied directly to yl/yr in
CAMELLIA_ROUNDSM.
Patch speeds up key setup and should speed up CAMELLIA_ROUNDSM as applying
key to yl/yr early has less register dependencies.
Quick tcrypt camellia results:
x86_64, AMD Phenom II, ~5% faster
x86_64, Intel Core 2, ~0.5% faster
i386, Intel Atom N270, ~1% faster
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'Documentation/dcdbas.txt')
0 files changed, 0 insertions, 0 deletions