| Age | Commit message (Collapse) | Author |
|---|
|
There are quite a number of occurrences in the kernel of the pattern
if (dst != src)
memcpy(dst, src, walk.total % AES_BLOCK_SIZE);
crypto_xor(dst, final, walk.total % AES_BLOCK_SIZE);
or
crypto_xor(keystream, src, nbytes);
memcpy(dst, keystream, nbytes);
where crypto_xor() is preceded or followed by a memcpy() invocation
that is only there because crypto_xor() uses its output parameter as
one of the inputs. To avoid having to add new instances of this pattern
in the arm64 code, which will be refactored to implement non-SIMD
fallbacks, add an alternative implementation called crypto_xor_cpy(),
taking separate input and output arguments. This removes the need for
the separate memcpy().
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
This module implements variations of "des3_ede" only. Drop the bogus
module aliases for "des".
Cc: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
This prefixes all crypto module loading with "crypto-" so we never run
the risk of exposing module auto-loading to userspace via a crypto API,
as demonstrated by Mathias Krause:
https://lkml.org/lkml/2013/3/4/70
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
Patch fixes following sparse warning:
CHECK arch/x86/crypto/des3_ede_glue.c
arch/x86/crypto/des3_ede_glue.c:308:52: warning: restricted __be64 degrades to integer
arch/x86/crypto/des3_ede_glue.c:309:52: warning: restricted __be64 degrades to integer
arch/x86/crypto/des3_ede_glue.c:310:52: warning: restricted __be64 degrades to integer
arch/x86/crypto/des3_ede_glue.c:326:44: warning: restricted __be64 degrades to integer
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
Patch adds x86_64 assembly implementation of Triple DES EDE cipher algorithm.
Two assembly implementations are provided. First is regular 'one-block at
time' encrypt/decrypt function. Second is 'three-blocks at time' function that
gains performance increase on out-of-order CPUs.
tcrypt test results:
Intel Core i5-4570:
des3_ede-asm vs des3_ede-generic:
size ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec
16B 1.21x 1.22x 1.27x 1.36x 1.25x 1.25x
64B 1.98x 1.96x 1.23x 2.04x 2.01x 2.00x
256B 2.34x 2.37x 1.21x 2.40x 2.38x 2.39x
1024B 2.50x 2.47x 1.22x 2.51x 2.52x 2.51x
8192B 2.51x 2.53x 1.21x 2.56x 2.54x 2.55x
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
Ard Biesheuvel
Mathias Krause
Kees Cook
Jussi Kivilinna