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  1. 21 9月, 2006 19 次提交
    • H
      [CRYPTO] cipher: Added block cipher type · 5cde0af2
      由 Herbert Xu 提交于 
      This patch adds the new type of block ciphers.  Unlike current cipher
algorithms which operate on a single block at a time, block ciphers
operate on an arbitrarily long linear area of data.  As it is block-based,
it will skip any data remaining at the end which cannot form a block.

The block cipher has one major difference when compared to the existing
block cipher implementation.  The sg walking is now performed by the
algorithm rather than the cipher mid-layer.  This is needed for drivers
that directly support sg lists.  It also improves performance for all
algorithms as it reduces the total number of indirect calls by one.

In future the existing cipher algorithm will be converted to only have
a single-block interface.  This will be done after all existing users
have switched over to the new block cipher type.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      5cde0af2
    • H
      [CRYPTO] scatterwalk: Prepare for block ciphers · 5c64097a
      由 Herbert Xu 提交于 
      This patch prepares the scatterwalk code for use by the new block cipher
type.

Firstly it halves the size of scatter_walk on 32-bit platforms.  This
is important as we allocate at least two of these objects on the stack
for each block cipher operation.

It also exports the symbols since the block cipher code can be built as
a module.

Finally there is a hack in scatterwalk_unmap that relies on progress
being made.  Unfortunately, for hardware crypto we can't guarantee
progress to be made since the hardware can fail.

So this also gets rid of the hack by not advancing the address returned
by scatterwalk_map.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      5c64097a
    • H
      [CRYPTO] cipher: Added encrypt_one/decrypt_one · f28776a3
      由 Herbert Xu 提交于 
      This patch adds two new operations for the simple cipher that encrypts or
decrypts a single block at a time.  This will be the main interface after
the existing block operations have moved over to the new block ciphers.

It also adds the crypto_cipher type which is currently only used on the
new operations but will be extended to setkey as well once existing users
have been converted to use block ciphers where applicable.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      f28776a3
    • H
      [CRYPTO] api: Added crypto_type support · e853c3cf
      由 Herbert Xu 提交于 
      This patch adds the crypto_type structure which will be used for all new
crypto algorithm types, beginning with block ciphers.

The primary purpose of this abstraction is to allow different crypto_type
objects for crypto algorithms of the same type, in particular, there will
be a different crypto_type objects for asynchronous algorithms.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      e853c3cf
    • H
      [CRYPTO] api: Added crypto_alloc_base · 6d7d684d
      由 Herbert Xu 提交于 
      Up until now all crypto transforms have been of the same type, struct
crypto_tfm, regardless of whether they are ciphers, digests, or other
types.  As a result of that, we check the types at run-time before
each crypto operation.

This is rather cumbersome.  We could instead use different C types for
each crypto type to ensure that the correct types are used at compile
time.  That is, we would have crypto_cipher/crypto_digest instead of
just crypto_tfm.  The appropriate type would then be required for the
actual operations such as crypto_digest_digest.

Now that we have the type/mask fields when looking up algorithms, it
is easy to request for an algorithm of the precise type that the user
wants.  However, crypto_alloc_tfm currently does not expose these new
attributes.

This patch introduces the function crypto_alloc_base which will carry
these new parameters.  It will be renamed to crypto_alloc_tfm once
all existing users have been converted.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      6d7d684d
    • H
      [CRYPTO] api: Added asynchronous flag · f3f632d6
      由 Herbert Xu 提交于 
      This patch adds the asynchronous flag and changes all existing users to
only look up algorithms that are synchronous.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      f3f632d6
    • H
      [CRYPTO] api: Add common instance initialisation code · 7fed0bf2
      由 Herbert Xu 提交于 
      This patch adds the helpers crypto_get_attr_alg and crypto_alloc_instance
which can be used by simple one-argument templates like hmac to process
input parameters and allocate instances.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      7fed0bf2
    • H
      [CRYPTO] cipher: Removed special IV checks for ECB · df89820e
      由 Herbert Xu 提交于 
      This patch makes IV operations on ECB fail through nocrypt_iv rather than
calling BUG().  This is needed to generalise CBC/ECB using the template
mechanism.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      df89820e
    • H
      [CRYPTO] api: Get rid of flags argument to setkey · 560c06ae
      由 Herbert Xu 提交于 
      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: NHerbert Xu <herbert@gondor.apana.org.au>
      560c06ae
    • M
      [CRYPTO] api: Add missing accessors for new crypto_alg fields · b14cdd67
      由 Michal Ludvig 提交于 
      Add missing accessors for cra_driver_name and cra_priority.
Signed-off-by: NMichal Ludvig <michal@logix.cz>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      b14cdd67
    • H
      [CRYPTO] api: Added spawns · 6bfd4809
      由 Herbert Xu 提交于 
      Spawns lock a specific crypto algorithm in place.  They can then be used
with crypto_spawn_tfm to allocate a tfm for that algorithm.  When the base
algorithm of a spawn is deregistered, all its spawns will be automatically
removed.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      6bfd4809
    • H
      [CRYPTO] api: Add cryptomgr · 2b8c19db
      由 Herbert Xu 提交于 
      The cryptomgr module is a simple manager of crypto algorithm instances.
It ensures that parameterised algorithms of the type tmpl(alg) (e.g.,
cbc(aes)) are always created.

This is meant to satisfy the needs for most users.  For more complex
cases such as deeper combinations or multiple parameters, a netlink
module will be created which allows arbitrary expressions to be parsed
in user-space.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      2b8c19db
    • H
      [CRYPTO] api: Added event notification · 2825982d
      由 Herbert Xu 提交于 
      This patch adds a notifier chain for algorithm/template registration events.
This will be used to register compound algorithms such as cbc(aes).  In
future this will also be passed onto user-space through netlink.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      2825982d
    • H
      [CRYPTO] api: Add template registration · 4cc7720c
      由 Herbert Xu 提交于 
      A crypto_template generates a crypto_alg object when given a set of
parameters.  this patch adds the basic data structure fo templates
and code to handle their registration/deregistration.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      4cc7720c
    • H
      [CRYPTO] api: Split out low-level API · cce9e06d
      由 Herbert Xu 提交于 
      The crypto API is made up of the part facing users such as IPsec and the
low-level part which is used by cryptographic entities such as algorithms.
This patch splits out the latter so that the two APIs are more clearly
delineated.  As a bonus the low-level API can now be modularised if all
algorithms are built as modules.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      cce9e06d
    • H
      [IPSEC]: Move linux/crypto.h inclusion out of net/xfrm.h · 9409f38a
      由 Herbert Xu 提交于 
      The header file linux/crypto.h is only needed by a few files so including
it in net/xfrm.h (which is included by half of the networking stack) is a
waste.  This patch moves it out of net/xfrm.h and into the specific header
files that actually need it.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      9409f38a
    • H
      [CRYPTO] api: Add crypto_alg reference counting · 6521f302
      由 Herbert Xu 提交于 
      Up until now we've relied on module reference counting to ensure that the
crypto_alg structures don't disappear from under us.  This was good enough
as long as each crypto_alg came from exactly one module.

However, with parameterised crypto algorithms a crypto_alg object may need
two or more modules to operate.  This means that we need to count the
references to the crypto_alg object directly.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      6521f302
    • J
      [CRYPTO] twofish: Split out common c code · 2729bb42
      由 Joachim Fritschi 提交于 
      This patch splits up the twofish crypto routine into a common part ( key
setup  ) which will be uses by all twofish crypto modules ( generic-c , i586
assembler and x86_64 assembler ) and generic-c part. It also creates a new
header file which will be used by all 3 modules.

This eliminates all code duplication.

Correctness was verified with the tcrypt module and automated test scripts.
Signed-off-by: NJoachim Fritschi <jfritschi@freenet.de>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      2729bb42
    • H
      [CRYPTO] api: Fixed crypto_tfm context alignment · 79911102
      由 Herbert Xu 提交于 
      Previously the __aligned__ attribute was added to the crypto_tfm context
member to ensure it is alinged correctly on architectures such as arm.
Unfortunately kmalloc does not use the same minimum alignment rules as
gcc so this is useless.

This patch changes it to use kmalloc's minimum alignment.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      79911102
  3. 19 9月, 2006 3 次提交
  5. 18 9月, 2006 2 次提交
  7. 17 9月, 2006 5 次提交
  9. 14 9月, 2006 1 次提交
  11. 13 9月, 2006 9 次提交
  13. 12 9月, 2006 1 次提交