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  1. 25 Dec, 2008 15 commits
    • Herbert Xu's avatar
      crypto: hash - Add import/export interface · dec8b786
      Herbert Xu authored 
      It is often useful to save the partial state of a hash function
so that it can be used as a base for two or more computations.

The most prominent example is HMAC where all hashes start from
a base determined by the key.  Having an import/export interface
means that we only have to compute that base once rather than
for each message.
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      dec8b786
    • Herbert Xu's avatar
      crypto: hash - Export shash through ahash · 3b2f6df0
      Herbert Xu authored 
      This patch allows shash algorithms to be used through the ahash
interface.  This is required before we can convert digest algorithms
over to shash.
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      3b2f6df0
    • Herbert Xu's avatar
      crypto: hash - Add shash interface · 7b5a080b
      Herbert Xu authored 
      The shash interface replaces the current synchronous hash interface.
It improves over hash in two ways.  Firstly shash is reentrant,
meaning that the same tfm may be used by two threads simultaneously
as all hashing state is stored in a local descriptor.

The other enhancement is that shash no longer takes scatter list
entries.  This is because shash is specifically designed for
synchronous algorithms and as such scatter lists are unnecessary.

All existing hash users will be converted to shash once the
algorithms have been completely converted.

There is also a new finup function that combines update with final.
This will be extended to ahash once the algorithm conversion is
done.

This is also the first time that an algorithm type has their own
registration function.  Existing algorithm types will be converted
to this way in due course.
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      7b5a080b
    • Herbert Xu's avatar
      crypto: api - Rebirth of crypto_alloc_tfm · 7b0bac64
      Herbert Xu authored 
      This patch reintroduces a completely revamped crypto_alloc_tfm.
The biggest change is that we now take two crypto_type objects
when allocating a tfm, a frontend and a backend.  In fact this
simply formalises what we've been doing behind the API's back.

For example, as it stands crypto_alloc_ahash may use an
actual ahash algorithm or a crypto_hash algorithm.  Putting
this in the API allows us to do this much more cleanly.

The existing types will be converted across gradually.
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      7b0bac64
    • Herbert Xu's avatar
      crypto: api - Move type exit function into crypto_tfm · 4a779486
      Herbert Xu authored 
      The type exit function needs to undo any allocations done by the type
init function.  However, the type init function may differ depending
on the upper-level type of the transform (e.g., a crypto_blkcipher
instantiated as a crypto_ablkcipher).

So we need to move the exit function out of the lower-level
structure and into crypto_tfm itself.

As it stands this is a no-op since nobody uses exit functions at
all.  However, all cases where a lower-level type is instantiated
as a different upper-level type (such as blkcipher as ablkcipher)
will be converted such that they allocate the underlying transform
and use that instead of casting (e.g., crypto_ablkcipher casted
into crypto_blkcipher).  That will need to use a different exit
function depending on the upper-level type.

This patch also allows the type init/exit functions to call (or not)
cra_init/cra_exit instead of always calling them from the top level.
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      4a779486
    • Neil Horman's avatar
      crypto: ansi_cprng - Allow resetting of DT value · 2566578a
      Neil Horman authored 
      	This is a patch that was sent to me by Jarod Wilson, marking off my
outstanding todo to allow the ansi cprng to set/reset the DT counter value in a
cprng instance.  Currently crytpo_rng_reset accepts a seed byte array which is
interpreted by the ansi_cprng as a {V key} tuple.  This patch extends that tuple
to now be {V key DT}, with DT an optional value during reset.  This patch also
fixes  a bug we noticed in which the offset of the key area of the seed is
started at DEFAULT_PRNG_KSZ rather than DEFAULT_BLK_SZ as it should be.
Signed-off-by: default avatarNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      2566578a
    • Herbert Xu's avatar
      crypto: padlock - Avoid resetting cword on successive operations · 420a4b20
      Herbert Xu authored 
      Resetting the control word is quite expensive.  Fortunately this
isn't an issue for the common operations such as CBC and ECB as
the whole operation is done through a single call.  However, modes
such as LRW and XTS have to call padlock over and over again for
one operation which really hurts if each call resets the control
word.

This patch uses an idea by Sebastian Siewior to store the last
control word used on a CPU and only reset the control word if
that changes.

Note that any task switch automatically resets the control word
so we only need to be accurate with regard to the stored control
word when no task switches occur.
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      420a4b20
    • Kent Liu's avatar
      crypto: crc32c-intel - Update copyright head · 1c06da81
      Kent Liu authored 
      The original copyright head for crc32c-intel.c is incorrect. Please merge
the patch to update it.
Signed-Off-By: default avatarKent Liu <kent.liu@intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      1c06da81
    • Vishnu Suresh's avatar
      crypto: talitos - Preempt overflow interrupts off-by-one fix · 4b24ea97
      Vishnu Suresh authored 
      In commit ec6644d6 "crypto: talitos - Preempt
overflow interrupts", the test in atomic_inc_not_zero was interpreted by the
author to be applied after the increment operation (not before). This off-by-one
fix prevents overflow error interrupts from occurring when requests are frequent
and large enough to do so.
Signed-off-by: default avatarVishnu Suresh <Vishnu@freescale.com>
Signed-off-by: default avatarKim Phillips <kim.phillips@freescale.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      4b24ea97
    • Harvey Harrison's avatar
      crypto: camellia - use kernel-provided bitops, unaligned access · 32bd78e0
      Harvey Harrison authored 
      Remove the private implementation of 32-bit rotation and unaligned
access with byteswapping.

As a bonus, fixes sparse warnings:
crypto/camellia.c:602:2: warning: cast to restricted __be32
crypto/camellia.c:603:2: warning: cast to restricted __be32
crypto/camellia.c:604:2: warning: cast to restricted __be32
crypto/camellia.c:605:2: warning: cast to restricted __be32
crypto/camellia.c:710:2: warning: cast to restricted __be32
crypto/camellia.c:711:2: warning: cast to restricted __be32
crypto/camellia.c:712:2: warning: cast to restricted __be32
crypto/camellia.c:713:2: warning: cast to restricted __be32
crypto/camellia.c:714:2: warning: cast to restricted __be32
crypto/camellia.c:715:2: warning: cast to restricted __be32
crypto/camellia.c:716:2: warning: cast to restricted __be32
crypto/camellia.c:717:2: warning: cast to restricted __be32

[Thanks to Tomoyuki Okazaki for spotting the typo]
Tested-by: default avatarCarlo E. Prelz <fluido@fluido.as>
Signed-off-by: default avatarHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      32bd78e0
    • Neil Horman's avatar
      crypto: testmgr - Trigger a panic when self test fails in FIPS mode · d12d6b6d
      Neil Horman authored 
      The FIPS specification requires that should self test for any supported
crypto algorithm fail during operation in fips mode, we need to prevent
the use of any crypto functionality until such time as the system can
be re-initialized.  Seems like the best way to handle that would be
to panic the system if we were in fips mode and failed a self test.
This patch implements that functionality.  I've built and run it
successfully.
Signed-off-by: default avatarNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      d12d6b6d
    • Kim Phillips's avatar
      crypto: talitos - Perform auth check in h/w if on sec 2.1 and above · fe5720e2
      Kim Phillips authored 
      SEC version 2.1 and above adds the capability to do the IPSec ICV
memcmp in h/w. Results of the cmp are written back in the descriptor
header, along with the done status.  A new callback is added that
checks these ICCR bits instead of performing the memcmp on the core,
and is enabled by h/w capability.
Signed-off-by: default avatarKim Phillips <kim.phillips@freescale.com>

After testing on different parts, another condition was added
before using h/w auth check because different
SEC revisions require different handling.

The SEC 3.0 allows a more flexible link table where
the auth data can span separate link table entries.
The SEC 2.4/2.1 does not support this case.
So a test was added in the decrypt routine
for a fragmented case; the h/w auth check is disallowed for
revisions not having the extent in the link table;
in this case the hw auth check is done by software.

A portion of a previous change for SEC 3.0 link table handling
was removed since it became dead code with the hw auth check supported.

This seems to be the best compromise for using hw auth check
on supporting SEC revisions; it keeps the link table logic
simpler for the fragmented cases.
Signed-off-by: default avatarLee Nipper <lee.nipper@freescale.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      fe5720e2
    • Lee Nipper's avatar
      crypto: talitos - Implement done interrupt mitigation · 1c2e8811
      Lee Nipper authored 
      In talitos_interrupt, upon one done interrupt, mask further done interrupts,
and ack only any error interrupt.
In talitos_done, unmask done interrupts after completing processing.
In flush_channel, ack each done channel processed.
Keep done overflow interrupts masked because even though each pkt
is ack'ed, a few done overflows still occur.
Signed-off-by: default avatarLee Nipper <lee.nipper@freescale.com>
Signed-off-by: default avatarKim Phillips <kim.phillips@freescale.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      1c2e8811
    • Kim Phillips's avatar
      crypto: talitos - Pass correct interrupt status to error handler · 40405f10
      Kim Phillips authored 
      Since we ack early, the re-read interrupt status in talitos_error
may be already updated with a new value.  Pass the error ISR value
directly in order to report and handle the error based on the correct
error status.

Also remove unused error tasklet.
Signed-off-by: default avatarKim Phillips <kim.phillips@freescale.com>
Signed-off-by: default avatarLee Nipper <lee.nipper@freescale.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      40405f10
    • Evgeniy Polyakov's avatar
      crypto: hifn - Disable driver when physical size exceeds 32 bits · a44b56cc
      Evgeniy Polyakov authored 
      On Tue, Sep 23, 2008 at 08:06:32PM +0200, Dimitri Puzin (max@psycast.de) wrote:
> With this patch applied it still doesn't work as expected. The overflow
> messages are gone however syslog shows
> [  120.924266] hifn0: abort: c: 0, s: 1, d: 0, r: 0.
> when doing cryptsetup luksFormat as in original e-mail. At this point
> cryptsetup hangs and can't be killed with -SIGKILL. I've attached
> SysRq-t dump of this condition.

Yes, I was wrong with the patch: HIFN does not support 64-bit addresses
afaics.

Attached patch should not allow HIFN to be registered on 64-bit arch, so
crypto layer will fallback to the software algorithms.
Signed-off-by: default avatarEvgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      a44b56cc
  3. 24 Dec, 2008 8 commits
  5. 23 Dec, 2008 7 commits
  7. 22 Dec, 2008 7 commits
  9. 20 Dec, 2008 3 commits
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