Commit Graph

20 Commits

Author SHA1 Message Date
Eric Biggers
c4741b2305 crypto: run initcalls for generic implementations earlier
Use subsys_initcall for registration of all templates and generic
algorithm implementations, rather than module_init.  Then change
cryptomgr to use arch_initcall, to place it before the subsys_initcalls.

This is needed so that when both a generic and optimized implementation
of an algorithm are built into the kernel (not loadable modules), the
generic implementation is registered before the optimized one.
Otherwise, the self-tests for the optimized implementation are unable to
allocate the generic implementation for the new comparison fuzz tests.

Note that on arm, a side effect of this change is that self-tests for
generic implementations may run before the unaligned access handler has
been installed.  So, unaligned accesses will crash the kernel.  This is
arguably a good thing as it makes it easier to detect that type of bug.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-04-18 22:15:03 +08:00
Eric Biggers
31d40c2098 crypto: null - convert ecb-cipher_null to skcipher API
Convert the "ecb-cipher_null" algorithm from the deprecated "blkcipher"
API to the "skcipher" API.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-01-11 14:16:58 +08:00
Kees Cook
8d60539842 crypto: null - Remove VLA usage of skcipher
In the quest to remove all stack VLA usage from the kernel[1], this
replaces struct crypto_skcipher and SKCIPHER_REQUEST_ON_STACK() usage
with struct crypto_sync_skcipher and SYNC_SKCIPHER_REQUEST_ON_STACK(),
which uses a fixed stack size.

[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-09-28 12:46:08 +08:00
Eric Biggers
e50944e219 crypto: shash - remove useless setting of type flags
Many shash algorithms set .cra_flags = CRYPTO_ALG_TYPE_SHASH.  But this
is redundant with the C structure type ('struct shash_alg'), and
crypto_register_shash() already sets the type flag automatically,
clearing any type flag that was already there.  Apparently the useless
assignment has just been copy+pasted around.

So, remove the useless assignment from all the shash algorithms.

This patch shouldn't change any actual behavior.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-07-09 00:30:24 +08:00
Herbert Xu
499a66e6b6 crypto: null - Remove default null blkcipher
The default null blkcipher is no longer used and can now be removed.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-07-18 17:35:44 +08:00
Herbert Xu
a0129733a3 crypto: null - Add new default null skcipher
Current the default null skcipher is actually a crypto_blkcipher.
This patch creates a synchronous crypto_skcipher version of the
null cipher which unfortunately has to settle for the name skcipher2.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-07-18 17:35:37 +08:00
Herbert Xu
330234638e crypto: null - Add default null skcipher
This patch adds a default null skcipher for users such as gcm
to perform copies on SG lists.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:55 +08:00
Kees Cook
5d26a105b5 crypto: prefix module autoloading with "crypto-"
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>
2014-11-24 22:43:57 +08:00
Horia Geanta
72567258f0 crypto: export NULL algorithms defines
These defines might be needed by crypto drivers.

Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-03-21 21:54:26 +08:00
Jussi Kivilinna
70a03bff6c crypto: crypto_null - use crypto_[un]register_algs
Combine all crypto_alg to be registered and use new crypto_[un]register_algs
functions. This simplifies init/exit code.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-08-01 17:47:24 +08:00
Richard Hartmann
c9af70fb86 crypto: crypto_null - Fix checkpatch errors
Signed-off-by: Richard Hartmann <richih.mailinglist@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2010-02-16 20:31:54 +08:00
Herbert Xu
d35d2454ce crypto: null - Switch to shash
This patch changes digest_null to the new shash interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-12-25 11:02:07 +11:00
Kamalesh Babulal
3af5b90bde [CRYPTO] all: Clean up init()/fini()
On Thu, Mar 27, 2008 at 03:40:36PM +0100, Bodo Eggert wrote:
> Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
> 
> > This patch cleanups the crypto code, replaces the init() and fini()
> > with the <algorithm name>_init/_fini
> 
> This part ist OK.
> 
> > or init/fini_<algorithm name> (if the 
> > <algorithm name>_init/_fini exist)
> 
> Having init_foo and foo_init won't be a good thing, will it? I'd start
> confusing them.
> 
> What about foo_modinit instead?

Thanks for the suggestion, the init() is replaced with

	<algorithm name>_mod_init ()

and fini () is replaced with <algorithm name>_mod_fini.
 
Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-04-21 10:19:34 +08:00
Herbert Xu
ce5bd4aca3 [CRYPTO] null: Allow setkey on digest_null
We need to allow setkey on digest_null if it is to be used directly by
authenc instead of through hmac.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-01-11 08:16:54 +11:00
Herbert Xu
3631c650c4 [CRYPTO] null: Add null blkcipher algorithm
This patch adds a null blkcipher algorithm called ecb(cipher_null) for
backwards compatibility.  Previously the null algorithm when used by
IPsec copied the data byte by byte.  This new algorithm optimises that
to a straight memcpy which lets us better measure inherent overheads in
our IPsec code.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-01-11 08:16:53 +11:00
Adrian Bunk
87ae9afdca cleanup asm/scatterlist.h includes
Not architecture specific code should not #include <asm/scatterlist.h>.

This patch therefore either replaces them with
#include <linux/scatterlist.h> or simply removes them if they were
unused.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-11-02 08:47:06 +01:00
Herbert Xu
560c06ae1a [CRYPTO] api: Get rid of flags argument to setkey
Now that the tfm is passed directly to setkey instead of the ctx, we no
longer need to pass the &tfm->crt_flags pointer.

This patch also gets rid of a few unnecessary checks on the key length
for ciphers as the cipher layer guarantees that the key length is within
the bounds specified by the algorithm.

Rather than testing dia_setkey every time, this patch does it only once
during crypto_alloc_tfm.  The redundant check from crypto_digest_setkey
is also removed.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:41:02 +10:00
Herbert Xu
6c2bb98bc3 [CRYPTO] all: Pass tfm instead of ctx to algorithms
Up until now algorithms have been happy to get a context pointer since
they know everything that's in the tfm already (e.g., alignment, block
size).

However, once we have parameterised algorithms, such information will
be specific to each tfm.  So the algorithm API needs to be changed to
pass the tfm structure instead of the context pointer.

This patch is basically a text substitution.  The only tricky bit is
the assembly routines that need to get the context pointer offset
through asm-offsets.h.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-06-26 17:34:39 +10:00
Patrick McHardy
d0856009db [PATCH] crypto: fix null encryption/compression
null_encrypt() needs to copy the data in case src and dst are disjunct,
null_compress() needs to copy the data in any case as far as I can tell.  I
joined compress/decompress and encrypt/decrypt to avoid duplicating code.

Without this patch ESP null_enc packets look like this:

IP (tos 0x0, ttl  64, id 23130, offset 0, flags [DF], length: 128)
10.0.0.1 > 10.0.0.2: ESP(spi=0x0f9ca149,seq=0x4)
	0x0000:  4500 0080 5a5a 4000 4032 cbef 0a00 0001  E...ZZ@.@2......
	0x0010:  0a00 0002 0f9c a149 0000 0004 0000 0000  .......I........
	0x0020:  0000 0000 0000 0000 0000 0000 0000 0000  ................
	0x0030:  0000 0000 0000 0000 0000 0000 0000 0000  ................
	0x0040:  0000 0000 0000 0000 0000 0000 0000 0000  ................
	0x0050:  0000                                     ..

IP (tos 0x0, ttl  64, id 256, offset 0, flags [DF], length: 128)
10.0.0.2 > 10.0.0.1: ESP(spi=0x0e4f7b51,seq=0x2)
	0x0000:  4500 0080 0100 4000 4032 254a 0a00 0002  E.....@.@2%J....
	0x0010:  0a00 0001 0e4f 7b51 0000 0002 a8a8 a8a8  .....O{Q........
	0x0020:  a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8  ................
	0x0030:  a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8  ................
	0x0040:  a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8  ................
	0x0050:  a8a8                                     ..

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:18 -07:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00