litmus-rt.git/crypto/Kconfig, branch v2.6.20

[CRYPTO] lrw: Liskov Rivest Wagner, a tweakable narrow block cipher mode

2006-12-07T02:38:56+00:00

Main module, this implements the Liskov Rivest Wagner block cipher mode
in the new blockcipher API. The implementation is based on ecb.c.

The LRW-32-AES specification I used can be found at:
http://grouper.ieee.org/groups/1619/email/pdf00017.pdf

It implements the optimization specified as optional in the
specification, and in addition it uses optimized multiplication
routines from gf128mul.c.

Since gf128mul.[ch] is not tested on bigendian, this cipher mode
may currently fail badly on bigendian machines.

Signed-off-by: Rik Snel 
Signed-off-by: Herbert Xu

[CRYPTO] lib: table driven multiplications in GF(2^128)

2006-12-07T02:38:55+00:00

A lot of cypher modes need multiplications in GF(2^128). LRW, ABL, GCM...
I use functions from this library in my LRW implementation and I will
also use them in my ABL (Arbitrary Block Length, an unencumbered (correct
me if I am wrong, wide block cipher mode).

Elements of GF(2^128) must be presented as u128 *, it encourages automatic
and proper alignment.

The library contains support for two different representations of GF(2^128),
see the comment in gf128mul.h. There different levels of optimization
(memory/speed tradeoff).

The code is based on work by Dr Brian Gladman. Notable changes:
- deletion of two optimization modes
- change from u32 to u64 for faster handling on 64bit machines
- support for 'bbe' representation in addition to the, already implemented,
  'lle' representation.
- move 'inline void' functions from header to 'static void' in the
  source file
- update to use the linux coding style conventions

The original can be found at:
http://fp.gladman.plus.com/AES/modes.vc8.19-06-06.zip

The copyright (and GPL statement) of the original author is preserved.

Signed-off-by: Rik Snel 
Signed-off-by: Herbert Xu

[CRYPTO] xcbc: New algorithm

2006-12-07T02:38:49+00:00

This is core code of XCBC.

XCBC is an algorithm that forms a MAC algorithm out of a cipher algorithm.
For example, AES-XCBC-MAC is a MAC algorithm based on the AES cipher
algorithm.

Signed-off-by: Kazunori MIYAZAWA 
Signed-off-by: Herbert Xu

[CRYPTO] api: Select cryptomgr where needed

2006-10-16T11:28:58+00:00

Since cryptomgr is the only way to construct algorithm instances
for now it makes sense to let the templates depend on it as
otherwise it may be left off inadvertently.

Signed-off-by: Herbert Xu

[CRYPTO] digest: Remove old HMAC implementation

2006-09-21T01:46:20+00:00

This patch removes the old HMAC implementation now that nobody uses it
anymore.

Signed-off-by: Herbert Xu 
Signed-off-by: David S. Miller

[CRYPTO] hmac: Add crypto template implementation

2006-09-21T01:46:17+00:00

This patch rewrites HMAC as a crypto template.  This means that HMAC is no
longer a hard-coded part of the API.  It's now a template that generates
standard digest algorithms like any other.

The old HMAC is preserved until all current users are converted.

The same structure can be used by other MACs such as AES-XCBC-MAC.

Signed-off-by: Herbert Xu 
Signed-off-by: David S. Miller

[CRYPTO] digest: Added user API for new hash type

2006-09-21T01:46:17+00:00

The existing digest user interface is inadequate for support asynchronous
operations.  For one it doesn't return a value to indicate success or
failure, nor does it take a per-operation descriptor which is essential
for the issuing of requests while other requests are still outstanding.

This patch is the first in a series of steps to remodel the interface
for asynchronous operations.

For the ease of transition the new interface will be known as "hash"
while the old one will remain as "digest".

This patch also changes sg_next to allow chaining.

Signed-off-by: Herbert Xu

[CRYPTO] s390: Added block cipher versions of CBC/ECB

2006-09-21T01:44:50+00:00

This patch adds block cipher algorithms for S390.  Once all users of the
old cipher type have been converted the existing CBC/ECB non-block cipher
operations will be removed.

Signed-off-by: Herbert Xu

[CRYPTO] cipher: Added block ciphers for CBC/ECB

2006-09-21T01:44:08+00:00

This patch adds two block cipher algorithms, CBC and ECB.  These
are implemented as templates on top of existing single-block cipher
algorithms.  They invoke the single-block cipher through the new
encrypt_one/decrypt_one interface.

This also optimises the in-place encryption and decryption to remove
the cost of an IV copy each round.

Signed-off-by: Herbert Xu

[CRYPTO] cipher: Added block cipher type

2006-09-21T01:41:52+00:00

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: Herbert Xu