linux.git/crypto/hmac.c, branch v2.6.33

crypto: hmac - Prehash ipad/opad

2009-07-24T07:18:41+00:00

This patch uses crypto_shash_export/crypto_shash_import to prehash
ipad/opad to speed up hmac.  This is partly based on a similar patch
by Steffen Klassert.

Signed-off-by: Herbert Xu

crypto: hmac - Fix incorrect error value when creating instance

2009-07-15T08:52:55+00:00

If shash_alloc_instance() fails, we return the wrong error value.
This patch fixes it.

Signed-off-by: Herbert Xu

crypto: hmac - Switch to shash

2009-07-14T04:58:04+00:00

This patch changes hmac to the new shash interface.

Signed-off-by: Herbert Xu

crypto: hash - Export shash through hash

2008-12-25T00:01:33+00:00

This patch allows shash algorithms to be used through the old hash
interface.  This is a transitional measure so we can convert the
underlying algorithms to shash before converting the users across.

Signed-off-by: Herbert Xu

crypto: hash - Fixed digest size check

2008-07-10T12:35:17+00:00

The digest size check on hash algorithms is incorrect.  It's
perfectly valid for hash algorithms to have a digest length
longer than their block size.  For example crc32c has a block
size of 1 and a digest size of 4.  Rather than having it lie
about its block size, this patch fixes the checks to do what
they really should which is to bound the digest size so that
code placing the digest on the stack continue to work.

HMAC however still needs to check this as it's only defined
for such algorithms.

Signed-off-by: Herbert Xu

[CRYPTO] hmac: Avoid calling virt_to_page on key

2008-05-07T13:08:56+00:00

When HMAC gets a key longer than the block size of the hash, it needs
to feed it as input to the hash to reduce it to a fixed length.  As
it is HMAC converts the key to a scatter and gather list.  However,
this doesn't work on certain platforms if the key is not allocated
via kmalloc.  For example, the keys from tcrypt are stored in the
rodata section and this causes it to fail with HMAC on x86-64.

This patch fixes this by copying the key to memory obtained via
kmalloc before hashing it.

Signed-off-by: Herbert Xu

Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p)

2008-02-07T16:42:26+00:00

Convert instances of ERR_PTR(PTR_ERR(p)) to ERR_CAST(p) using:

perl -spi -e 's/ERR_PTR[(]PTR_ERR[(](.*)[)][)]/ERR_CAST(\1)/' `grep -rl 'ERR_PTR[(]*PTR_ERR' fs crypto net security`

Signed-off-by: David Howells 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[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: Use generic scatterlist chaining

2008-01-10T21:16:14+00:00

This patch converts the crypto scatterwalk code to use the generic
scatterlist chaining rather the version specific to crypto.

Signed-off-by: Herbert Xu

[CRYPTO]: HMAC needs some more scatterlist fixups.

2007-10-26T07:37:12+00:00

hmac_setkey(), hmac_init(), and hmac_final() have
a singular on-stack scatterlist.  Initialit is
using sg_init_one() instead of using sg_set_buf().

Signed-off-by: David S. Miller