linux-toradex.git/include/crypto, branch v2.6.25-rc2

[CRYPTO] api: Include sched.h for cond_resched in scatterwalk.h

2008-01-10T21:16:59+00:00

As Andrew Morton correctly points out, we need to explicitly include
sched.h as we use the function cond_resched in crypto/scatterwalk.h.

Signed-off-by: Herbert Xu

[CRYPTO] chainiv: Avoid lock spinning where possible

2008-01-10T21:16:55+00:00

This patch makes chainiv avoid spinning by postponing requests on lock
contention if the user allows the use of asynchronous algorithms.  If
a synchronous algorithm is requested then we behave as before.

This should improve IPsec performance on SMP when two CPUs attempt to
transmit over the same SA.  Currently one of them will spin doing nothing
waiting for the other CPU to finish its encryption.  This patch makes it
postpone the request and get on with other work.

If only one CPU is transmitting for a given SA, then we will process
the request synchronously as before.

Signed-off-by: Herbert Xu

[CRYPTO] null: Add null blkcipher algorithm

2008-01-10T21:16:53+00:00

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

[CRYPTO] aead: Create default givcipher instances

2008-01-10T21:16:52+00:00

This patch makes crypto_alloc_aead always return algorithms that is
capable of generating their own IVs through givencrypt and givdecrypt.
All existing AEAD algorithms already do.  New ones must either supply
their own or specify a generic IV generator with the geniv field.

Signed-off-by: Herbert Xu

[CRYPTO] aead: Add aead_geniv_alloc/aead_geniv_free

2008-01-10T21:16:51+00:00

This patch creates the infrastructure to help the construction of IV
generator templates that wrap around AEAD algorithms by adding an IV
generator to them.  This is useful for AEAD algorithms with no built-in
IV generator or to replace their built-in generator.

Signed-off-by: Herbert Xu

[CRYPTO] aead: Add top-level givencrypt/givdecrypt calls

2008-01-10T21:16:50+00:00

This patch finally makes the givencrypt/givdecrypt operations available
to users by adding crypto_aead_givencrypt and crypto_aead_givdecrypt.
A suite of helpers to allocate and fill in the request is also available.

Signed-off-by: Herbert Xu

[CRYPTO] aead: Add givcrypt operations

2008-01-10T21:16:49+00:00

This patch adds the underlying givcrypt operations for aead and associated
support elements.  The rationale is identical to that of the skcipher
givcrypt operations, i.e., sometimes only the algorithm knows how the
IV should be generated.

A new request type aead_givcrypt_request is added which contains an
embedded aead_request structure with two new elements to support this
operation.  The new elements are seq and giv.  The seq field should
contain a strictly increasing 64-bit integer which may be used by
certain IV generators as an input value.  The giv field will be used
to store the generated IV.  It does not need to obey the alignment
requirements of the algorithm because it's not used during the operation.

The existing iv field must still be available as it will be used to store
intermediate IVs and the output IV if chaining is desired.

Signed-off-by: Herbert Xu

[CRYPTO] skcipher: Add top-level givencrypt/givdecrypt calls

2008-01-10T21:16:49+00:00

This patch finally makes the givencrypt/givdecrypt operations available
to users by adding crypto_skcipher_givencrypt and crypto_skcipher_givdecrypt.
A suite of helpers to allocate and fill in the request is also available.

Signed-off-by: Herbert Xu

[CRYPTO] skcipher: Remove crypto_spawn_ablkcipher

2008-01-10T21:16:48+00:00

Now that gcm and authenc have been converted to crypto_spawn_skcipher,
this patch removes the obsolete crypto_spawn_ablkcipher function.

Signed-off-by: Herbert Xu

[CRYPTO] skcipher: Create default givcipher instances

2008-01-10T21:16:46+00:00

This patch makes crypto_alloc_ablkcipher/crypto_grab_skcipher always
return algorithms that are capable of generating their own IVs through
givencrypt and givdecrypt.  Each algorithm may specify its default IV
generator through the geniv field.

For algorithms that do not set the geniv field, the blkcipher layer will
pick a default.  Currently it's chainiv for synchronous algorithms and
eseqiv for asynchronous algorithms.  Note that if these wrappers do not
work on an algorithm then that algorithm must specify its own geniv or
it can't be used at all.

Signed-off-by: Herbert Xu