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7 Commits

Author SHA1 Message Date
Kees Cook
4943ba16bb crypto: include crypto- module prefix in template 
This adds the module loading prefix "crypto-" to the template lookup
as well.

For example, attempting to load 'vfat(blowfish)' via AF_ALG now correctly
includes the "crypto-" prefix at every level, correctly rejecting "vfat":

	net-pf-38
	algif-hash
	crypto-vfat(blowfish)
	crypto-vfat(blowfish)-all
	crypto-vfat

Reported-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 2014-11-26 20:06:30 +08:00
David Howells
e231c2ee64 Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 
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 <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2008-02-07 08:42:26 -08:00
Herbert Xu
50b6544e13 [CRYPTO] cbc: Require block size to be a power of 2 
All common block ciphers have a block size that's a power of 2.  In fact,
all of our block ciphers obey this rule.

If we require this then CBC can be optimised to avoid an expensive divide
on in-place decryption.

I've also changed the saving of the first IV in the in-place decryption
case to the last IV because that lets us use walk->iv (which is already
aligned) for the xor operation where alignment is required.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 2008-01-11 08:16:19 +11:00
Herbert Xu
3c7f076da5 [CRYPTO] cbc: Use crypto_xor 
This patch replaces the custom xor in CBC with the generic crypto_xor.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 2008-01-11 08:16:18 +11:00
Herbert Xu
ebc610e5bc [CRYPTO] templates: Pass type/mask when creating instances 
This patch passes the type/mask along when constructing instances of
templates.  This is in preparation for templates that may support
multiple types of instances depending on what is requested.  For example,
the planned software async crypto driver will use this construct.

For the moment this allows us to check whether the instance constructed
is of the correct type and avoid returning success if the type does not
match.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 2007-05-02 14:38:31 +10:00
Herbert Xu
2e306ee016 [CRYPTO] api: Add type-safe spawns 
This patch allows spawns of specific types (e.g., cipher) to be allocated.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 2007-02-07 09:21:01 +11:00
Herbert Xu
db131ef908 [CRYPTO] cipher: Added block ciphers for CBC/ECB 
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 <herbert@gondor.apana.org.au>
 2006-09-21 11:44:08 +10:00