linux.git/crypto/gcm.c, branch v2.6.25

[CRYPTO] gcm: Introduce rfc4106

2008-01-10T21:16:56+00:00

This patch introduces the rfc4106 wrapper for GCM just as we have an
rfc4309 wrapper for CCM.  The purpose of the wrapper is to include part
of the IV in the key so that it can be negotiated by IPsec.

Signed-off-by: Herbert Xu

[CRYPTO] gcm: Use crypto_grab_skcipher

2008-01-10T21:16:47+00:00

This patch converts the gcm algorithm over to crypto_grab_skcipher
which is a prerequisite for IV generation.

Signed-off-by: Herbert Xu

[CRYPTO] gcm: Allow block cipher parameter

2008-01-10T21:16:47+00:00

This patch adds the gcm_base template which takes a block cipher
parameter instead of cipher.  This allows the user to specify a
specific CTR implementation.

This also fixes a leak of the cipher algorithm that was previously
looked up but never freed.

Signed-off-by: Herbert Xu

[CRYPTO] gcm: Add support for async ciphers

2008-01-10T21:16:42+00:00

This patch adds the necessary changes for GCM to be used with async
ciphers.  This would allow it to be used with hardware devices that
support CTR.

Signed-off-by: Herbert Xu

[CRYPTO] ctr: Refactor into ctr and rfc3686

2008-01-10T21:16:41+00:00

As discussed previously, this patch moves the basic CTR functionality
into a chainable algorithm called ctr.  The IPsec-specific variant of
it is now placed on top with the name rfc3686.

So ctr(aes) gives a chainable cipher with IV size 16 while the IPsec
variant will be called rfc3686(ctr(aes)).  This patch also adjusts
gcm accordingly.

Signed-off-by: Herbert Xu

[CRYPTO] gcm: Fix request context alignment

2008-01-10T21:16:40+00:00

This patch fixes the request context alignment so that it is actually
aligned to the value required by the algorithm.

Signed-off-by: Herbert Xu

[CRYPTO] gcm: Put abreq in private context instead of on stack

2008-01-10T21:16:33+00:00

The abreq structure is currently allocated on the stack.  This is broken
if the underlying algorithm is asynchronous.  This patch changes it so
that it's taken from the private context instead which has been enlarged
accordingly.

Signed-off-by: Herbert Xu

[CRYPTO] scatterwalk: Restore custom sg chaining for now

2008-01-10T21:16:33+00:00

Unfortunately the generic chaining hasn't been ported to all architectures
yet, and notably not s390.  So this patch restores the chainging that we've
been using previously which does work everywhere.

Signed-off-by: Herbert Xu

[CRYPTO] scatterwalk: Move scatterwalk.h to linux/crypto

2008-01-10T21:16:32+00:00

The scatterwalk infrastructure is used by algorithms so it needs to
move out of crypto for future users that may live in drivers/crypto
or asm/*/crypto.

Signed-off-by: Herbert Xu

[CRYPTO] aead: Return EBADMSG for ICV mismatch

2008-01-10T21:16:32+00:00

This patch changes gcm/authenc to return EBADMSG instead of EINVAL for
ICV mismatches.  This convention has already been adopted by IPsec.

Signed-off-by: Herbert Xu