Commit Graph

547 Commits

Author SHA1 Message Date
Herbert Xu
9cd899a32f crypto: cryptd - Switch to template create API
This patch changes cryptd to use the template->create function
instead of alloc in anticipation for the switch to new style
ahash algorithms.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 18:45:45 +08:00
Herbert Xu
7be380f720 crypto: tcrypt - Add mask parameter
This patch adds a mask parameter to complement the existing type
parameter.  This is useful when instantiating algorithms that
require a mask other than the default, e.g., ahash algorithms.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 16:06:54 +08:00
Herbert Xu
01c2dece43 crypto: ahash - Add instance/spawn support
This patch adds support for creating ahash instances and using
ahash as spawns.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 15:54:09 +08:00
Herbert Xu
88056ec346 crypto: ahash - Convert to new style algorithms
This patch converts crypto_ahash to the new style.  The old ahash
algorithm type is retained until the existing ahash implementations
are also converted.  All ahash users will automatically get the
new crypto_ahash type.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 15:54:07 +08:00
Herbert Xu
2ca33da1de crypto: api - Remove frontend argument from extsize/init_tfm
As the extsize and init_tfm functions belong to the frontend the
frontend argument is superfluous.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 12:58:15 +08:00
Herbert Xu
0d6669e2ba crypto: cryptd - Use crypto_ahash_set_reqsize
This patch makes cryptd use crypto_ahash_set_reqsize to avoid
accessing crypto_ahash directly.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 12:58:12 +08:00
Herbert Xu
46309d8938 crypto: cryptd - Use shash algorithms
This patch changes cryptd to use shash algorithms instead of the
legacy hash interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 12:58:10 +08:00
Herbert Xu
7eddf95ec5 crypto: shash - Export async functions
This patch exports the async functions so that they can be reused
by cryptd when it switches over to using shash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 12:58:08 +08:00
Herbert Xu
6941c3a0aa crypto: hash - Remove legacy hash/digest implementaion
This patch removes the implementation of hash and digest now that
no algorithms use them anymore.  The interface though will remain
until the users are converted across.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 12:58:07 +08:00
Herbert Xu
9ef074fa9b crypto: authenc - Remove reference to crypto_hash
Now that there are no more legacy hash implementations we can
remove the reference to crypto_hash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 12:58:07 +08:00
Herbert Xu
3106caab61 crypto: xcbc - Switch to shash
This patch converts the xcbc algorithm to the new shash type.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 12:58:06 +08:00
Herbert Xu
8bd1209cff crypto: hmac - Switch to shash
This patch changes hmac to the new shash interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 12:58:04 +08:00
Herbert Xu
113adefc73 crypto: shash - Make descsize a run-time attribute
This patch changes descsize to a run-time attribute so that
implementations can change it in their init functions.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-14 12:58:00 +08:00
Herbert Xu
57cfe44bcc crypto: shash - Move null setkey check to registration time
This patch moves the run-time null setkey check to shash_prepare_alg
just like we did for finup/digest.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-12 10:46:02 +08:00
Herbert Xu
9b2fda7b94 crypto: sha256_generic - Add export/import support
This patch adds export/import support to sha256_generic.  The exported
type is defined by struct sha256_state, which is basically the entire
descriptor state of sha256_generic.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-11 18:23:34 +08:00
Herbert Xu
3d4d277cf8 crypto: sha256_generic - Use 64-bit counter like sha1
This patch replaces the two 32-bit counter code in sha256_generic
with the simpler 64-bit counter code from sha1.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-11 18:23:33 +08:00
Herbert Xu
e2a7ce4e18 crypto: sha1_generic - Add export/import support
This patch adds export/import support to sha1_generic.  The exported
type is defined by struct sha1_state, which is basically the entire
descriptor state of sha1_generic.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-11 18:23:33 +08:00
Herbert Xu
8267adab94 crypto: shash - Move finup/digest null checks to registration time
This patch moves the run-time null finup/digest checks to the
shash_prepare_alg function which is run at registration time.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-11 18:23:33 +08:00
Herbert Xu
99d27e1c59 crypto: shash - Export/import hash state only
This patch replaces the full descriptor export with an export of
the partial hash state.  This allows the use of a consistent export
format across all implementations of a given algorithm.

This is useful because a number of cases require the use of the
partial hash state, e.g., PadLock can use the SHA1 hash state
to get around the fact that it can only hash contiguous data
chunks.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-11 18:23:32 +08:00
Herbert Xu
7ede5a5ba5 crypto: api - Fix crypto_drop_spawn crash on blank spawns
This patch allows crypto_drop_spawn to be called on spawns that
have not been initialised or have failed initialisation.  This
fixes potential crashes during initialisation without adding
special case code.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-09 11:34:06 +08:00
Herbert Xu
deee2289b9 crypto: shash - Propagate reinit return value
This patch fixes crypto_shash_import to propagate the value returned
by reinit.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-08 23:39:01 +08:00
Herbert Xu
f88ad8de28 crypto: shash - Use finup in default digest
This patch simplifies the default digest function by using finup.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-08 23:32:08 +08:00
Herbert Xu
619a6ebd25 crypto: shash - Add shash_register_instance
This patch adds shash_register_instance so that shash instances
can be registered without bypassing the shash checks applied to
normal algorithms.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-08 19:00:38 +08:00
Herbert Xu
7d6f56400a crypto: shash - Add shash_attr_alg2 helper
This patch adds the helper shash_attr_alg2 which locates a shash
algorithm based on the information in the given attribute.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-08 18:58:30 +08:00
Herbert Xu
d06854f024 crypto: api - Add crypto_attr_alg2 helper
This patch adds the helper crypto_attr_alg2 which is similar to
crypto_attr_alg but takes an extra frontend argument.  This is
intended to be used by new style algorithm types such as shash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-08 18:58:29 +08:00
Herbert Xu
942969992d crypto: shash - Add spawn support
This patch adds the functions needed to create and use shash
spawns, i.e., to use shash algorithms in a template.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-08 18:58:29 +08:00
Herbert Xu
97eedce1a6 crypto: api - Add new style spawn support
This patch modifies the spawn infrastructure to support new style
algorithms like shash.  In particular, this means storing the
frontend type in the spawn and using crypto_create_tfm to allocate
the tfm.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-08 18:57:10 +08:00
Herbert Xu
2e4fddd8e4 crypto: shash - Add shash_instance
This patch adds shash_instance and the associated alloc/free
functions.  This is meant to be an instance that with a shash
algorithm under it.  Note that the instance itself doesn't have
to be shash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-08 18:57:10 +08:00
Herbert Xu
70ec7bb91a crypto: api - Add crypto_alloc_instance2
This patch adds a new argument to crypto_alloc_instance which
sets aside some space before the instance for use by algorithms
such as shash that place type-specific data before crypto_alg.

For compatibility the function has been renamed so that existing
users aren't affected.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-07 18:55:28 +08:00
Herbert Xu
f2ac72e826 crypto: api - Add new template create function
This patch introduces the template->create function intended
to replace the existing alloc function.  The intention is for
create to handle the registration directly, whereas currently
the caller of alloc has to handle the registration.

This allows type-specific code to be run prior to registration.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-07 12:30:33 +08:00
Sebastian Andrzej Siewior
fd09d7facb crypto: ansi_prng - alloc cipher just in init
As reported by Eric Sesterhenn the re-allocation of the cipher in reset leads
to:
|BUG: sleeping function called from invalid context at kernel/rwsem.c:21
|in_atomic(): 1, irqs_disabled(): 0, pid: 4926, name: modprobe
|INFO: lockdep is turned off.
|Pid: 4926, comm: modprobe Tainted: G   M 2.6.31-rc1-22297-g5298976 #24
|Call Trace:
| [<c011dd93>] __might_sleep+0xf9/0x101
| [<c0777aa0>] down_read+0x16/0x68
| [<c048bf04>] crypto_alg_lookup+0x16/0x34
| [<c048bf52>] crypto_larval_lookup+0x30/0xf9
| [<c048c038>] crypto_alg_mod_lookup+0x1d/0x62
| [<c048c13e>] crypto_alloc_base+0x1e/0x64
| [<c04bf991>] reset_prng_context+0xab/0x13f
| [<c04e5cfc>] ? __spin_lock_init+0x27/0x51
| [<c04bfce1>] cprng_init+0x2a/0x42
| [<c048bb4c>] __crypto_alloc_tfm+0xfa/0x128
| [<c048c153>] crypto_alloc_base+0x33/0x64
| [<c04933c9>] alg_test_cprng+0x30/0x1f4
| [<c0493329>] alg_test+0x12f/0x19f
| [<c0177f1f>] ? __alloc_pages_nodemask+0x14d/0x481
| [<d09219e2>] do_test+0xf9d/0x163f [tcrypt]
| [<d0920de6>] do_test+0x3a1/0x163f [tcrypt]
| [<d0926035>] tcrypt_mod_init+0x35/0x7c [tcrypt]
| [<c010113c>] _stext+0x54/0x12c
| [<d0926000>] ? tcrypt_mod_init+0x0/0x7c [tcrypt]
| [<c01398a3>] ? up_read+0x16/0x2b
| [<c0139fc4>] ? __blocking_notifier_call_chain+0x40/0x4c
| [<c014ee8d>] sys_init_module+0xa9/0x1bf
| [<c010292b>] sysenter_do_call+0x12/0x32

because a spin lock is held and crypto_alloc_base() may sleep.
There is no reason to re-allocate the cipher, the state is resetted in
->setkey(). This patches makes the cipher allocation a one time thing and
moves it to init.

Reported-by: Eric Sesterhenn <eric.sesterhenn@lsexperts.de>
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-03 12:10:47 +08:00
Sebastian Andrzej Siewior
ed94070058 crypto: ansi_prng - Use just a BH lock
The current code uses a mix of sping_lock() & spin_lock_irqsave(). This can
lead to deadlock with the correct timming & cprng_get_random() + cprng_reset()
sequence.
I've converted them to bottom half locks since all three user grab just a BH
lock so this runs probably in softirq :)

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-03 12:09:41 +08:00
Herbert Xu
a68f6610d4 crypto: testmgr - Allow implementation-specific tests
This patch adds the support for testing specific implementations.
This should only be used in very specific situations.  Right now
this means specific implementations of random number generators.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-07-02 16:32:12 +08:00
Herbert Xu
0b67fb65d1 crypto: skcipher - Change default sync geniv on SMP to eseqiv
As it stands we use chainiv for sync algorithms and eseqiv for
async algorithms.  However, when there is more than one CPU
chainiv forces all processing to be serialised which is usually
not what you want.  Also, the added overhead of eseqiv isn't that
great.

Therefore this patch changes the default sync geniv on SMP machines
to eseqiv.  For the odd situation where the overhead is unacceptable
then chainiv is still available as an option.

Note that on UP machines chainiv is still preferred over eseqiv
for sync algorithms.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-25 18:43:48 +08:00
Herbert Xu
435578aeaa crypto: skcipher - Fix request for sync algorithms
When a sync givcipher algorithm is requested, if an async version
of the same algorithm already exists, then we will loop forever
without ever constructing the sync version based on a blkcipher.

This is because we did not include the requested type/mask when
getting a larval for the geniv algorithm that is to be constructed.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-25 14:46:31 +08:00
Herbert Xu
259c5e05c1 crypto: testmgr - Remove hash size check
Until hash test vectors grow longer than 256 bytes, the only
purpose of the check is to generate a gcc warning.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-24 13:48:13 +08:00
Neil Horman
215ccd6f55 crypto: fips - Select CPRNG
The ANSI CPRNG has no dependence on FIPS support.  FIPS support however,
requires the use of the CPRNG.  Adjust that depedency relationship in Kconfig.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-21 21:38:03 +08:00
Herbert Xu
ea40065769 crypto: tcrypt - Fix module return code when testing by name
We should return 0/-ENOENT instead of 1/0 when testing by name.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-19 20:37:00 +08:00
Herbert Xu
27300176d7 crypto: ansi_cprng - Do not select FIPS
The RNG should work with FIPS disabled.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-19 20:32:58 +08:00
Steffen Klassert
a873a5f1c4 crypto: tcrypt - Test algorithms by name
This adds the 'alg' module parameter to be able to test an
algorithm by name. If the algorithm type is not ad-hoc
clear for a algorithm (e.g. pcrypt, cryptd) it is possilbe
to set the algorithm type with the 'type' module parameter.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-19 19:46:53 +08:00
Neil Horman
5b739ef8a4 random: Add optional continuous repetition test to entropy store based rngs
FIPS-140 requires that all random number generators implement continuous self
tests in which each extracted block of data is compared against the last block
for repetition.  The ansi_cprng implements such a test, but it would be nice if
the hw rng's did the same thing.  Obviously its not something thats always
needed, but it seems like it would be a nice feature to have on occasion. I've
written the below patch which allows individual entropy stores to be flagged as
desiring a continuous test to be run on them as is extracted.  By default this
option is off, but is enabled in the event that fips mode is selected during
bootup.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-18 19:50:21 +08:00
Vegard Nossum
722f2a6c87 Merge commit 'linus/master' into HEAD
Conflicts:
	MAINTAINERS

Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
2009-06-15 15:50:49 +02:00
Vegard Nossum
33f65df7ed crypto: don't track xor test pages with kmemcheck
The xor tests are run on uninitialized data, because it is doesn't
really matter what the underlying data is. Annotate this false-
positive warning.

Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
2009-06-15 12:40:10 +02:00
Alex Riesen
aa07a6990f crypto: api - Use formatting of module name
Besdies, for the old code, gcc-4.3.3 produced this warning:
  "format not a string literal and no format arguments"

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02 14:13:14 +10:00
Herbert Xu
a0cfae59f8 crypto: testmgr - Allow hash test vectors longer than a page
As it stands we will each test hash vector both linearly and as
a scatter list if applicable.  This means that we cannot have
vectors longer than a page, even with scatter lists.

This patch fixes this by skipping test vectors with np != 0 when
testing linearly.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02 14:05:02 +10:00
Herbert Xu
fd57f22a09 crypto: testmgr - Check all test vector lengths
As we cannot guarantee the availability of contiguous pages at
run-time, all test vectors must either fit within a page, or use
scatter lists.  In some cases vectors were not checked as to
whether they fit inside a page.  This patch adds all the missing
checks.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02 14:05:00 +10:00
Jarod Wilson
4e033a6bc7 crypto: tcrypt - Do not exit on success in fips mode
At present, the tcrypt module always exits with an -EAGAIN upon
successfully completing all the tests its been asked to run. In fips
mode, integrity checking is done by running all self-tests from the
initrd, and its much simpler to check the ret from modprobe for
success than to scrape dmesg and/or /proc/crypto. Simply stay
loaded, giving modprobe a retval of 0, if self-tests all pass and
we're in fips mode.

A side-effect of tracking success/failure for fips mode is that in
non-fips mode, self-test failures will return the actual failure
return codes, rather than always returning -EAGAIN, which seems more
correct anyway.

The tcrypt_test() portion of the patch is dependent on my earlier
pair of patches that skip non-fips algs in fips mode, at least to
achieve the fully intended behavior.

Nb: testing this patch against the cryptodev tree revealed a test
failure for sha384, which I have yet to look into...

Signed-off-by: Jarod Wilson <jarod@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02 14:04:57 +10:00
Geert Uytterhoeven
3ce858cb04 crypto: compress - Return produced bytes in crypto_{,de}compress_{update,final}
If crypto_{,de}compress_{update,final}() succeed, return the actual number of
bytes produced instead of zero, so their users don't have to calculate that
theirselves.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02 14:04:56 +10:00
Jarod Wilson
a3bef3a31a crypto: testmgr - Skip algs not flagged fips_allowed in fips mode
Because all fips-allowed algorithms must be self-tested before they
can be used, they will all have entries in testmgr.c's alg_test_descs[].
Skip self-tests for any algs not flagged as fips_approved and return
-EINVAL when in fips mode.

Signed-off-by: Jarod Wilson <jarod@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02 14:04:49 +10:00
Jarod Wilson
a1915d51e8 crypto: testmgr - Mark algs allowed in fips mode
Set the fips_allowed flag in testmgr.c's alg_test_descs[] for algs
that are allowed to be used when in fips mode.

One caveat: des isn't actually allowed anymore, but des (and thus also
ecb(des)) has to be permitted, because disallowing them results in
des3_ede being unable to properly register (see des module init func).

Also, crc32 isn't technically on the fips approved list, but I think
it gets used in various places that necessitate it being allowed.

This list is based on
http://csrc.nist.gov/groups/STM/cavp/index.html

Important note: allowed/approved here does NOT mean "validated", just
that its an alg that *could* be validated.

Signed-off-by: Jarod Wilson <jarod@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02 14:04:48 +10:00