Tan Swee Heng [Mon, 17 Dec 2007 16:04:40 +0000 (00:04 +0800)]
[CRYPTO] salsa20: Add x86-64 assembly version
This is the x86-64 version of the Salsa20 stream cipher algorithm. The
original assembly code came from
<http://cr.yp.to/snuffle/salsa20/amd64-3/salsa20.s>. It has been
reformatted for clarity.
Signed-off-by: Tan Swee Heng <thesweeheng@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch contains the salsa20-i586 implementation. The original
assembly code came from
<http://cr.yp.to/snuffle/salsa20/x86-pm/salsa20.s>. I have reformatted
it (added indents) so that it matches the other algorithms in
arch/x86/crypto.
Signed-off-by: Tan Swee Heng <thesweeheng@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Mon, 17 Dec 2007 07:33:17 +0000 (15:33 +0800)]
[CRYPTO] gcm: Introduce rfc4106
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 <herbert@gondor.apana.org.au>
Herbert Xu [Fri, 14 Dec 2007 14:28:14 +0000 (22:28 +0800)]
[CRYPTO] chainiv: Avoid lock spinning where possible
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 <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 13 Dec 2007 16:44:11 +0000 (00:44 +0800)]
[CRYPTO] scatterwalk: Handle zero nbytes in scatterwalk_map_and_copy
It's better to return silently than crash and burn when someone feeds us
a zero length. In particular the null digest algorithm when used as part
of authenc will do that to us.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 13 Dec 2007 14:28:59 +0000 (22:28 +0800)]
[CRYPTO] null: Add null blkcipher algorithm
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 <herbert@gondor.apana.org.au>
Joy Latten [Wed, 12 Dec 2007 12:24:22 +0000 (20:24 +0800)]
[CRYPTO] tcrypt: Add CCM vectors
This patch adds 7 test vectors to tcrypt for CCM.
The test vectors are from rfc 3610.
There are about 10 more test vectors in RFC 3610
and 4 or 5 more in NIST. I can add these as time permits.
I also needed to set authsize. CCM has a prerequisite of
authsize.
Signed-off-by: Joy Latten <latten@austin.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Wed, 12 Dec 2007 11:24:27 +0000 (19:24 +0800)]
[CRYPTO] aead: Create default givcipher instances
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 <herbert@gondor.apana.org.au>
Herbert Xu [Wed, 12 Dec 2007 04:27:26 +0000 (12:27 +0800)]
[CRYPTO] seqiv: Add AEAD support
This patch adds support for using seqiv with AEAD algorithms. This is
useful for those AEAD algorithms that performs authentication before
encryption because the IV generated by the underlying encryption algorithm
won't be available for authentication.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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 <herbert@gondor.apana.org.au>
Herbert Xu [Wed, 12 Dec 2007 11:27:25 +0000 (19:27 +0800)]
[CRYPTO] aead: Allow algorithms with no givcrypt support
Some algorithms always require manual IV construction. For instance,
the generic CCM algorithm requires the first byte of the IV to be manually
constructed. Such algorithms are always used by other algorithms equipped
with their own IV generators and do not need IV generation per se.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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 <herbert@gondor.apana.org.au>
Herbert Xu [Mon, 10 Dec 2007 08:18:01 +0000 (16:18 +0800)]
[CRYPTO] aead: Add givcrypt operations
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 <herbert@gondor.apana.org.au>
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 <herbert@gondor.apana.org.au>
Herbert Xu [Fri, 7 Dec 2007 12:31:10 +0000 (20:31 +0800)]
[CRYPTO] gcm: Allow block cipher parameter
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 <herbert@gondor.apana.org.au>
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 <herbert@gondor.apana.org.au>
Herbert Xu [Wed, 5 Dec 2007 01:10:53 +0000 (12:10 +1100)]
[CRYPTO] eseqiv: Add Encrypted Sequence Number IV Generator
This generator generates an IV based on a sequence number by xoring it
with a salt and then encrypting it with the same key as used to encrypt
the plain text. This algorithm requires that the block size be equal
to the IV size. It is mainly useful for CBC.
It has one noteworthy property that for IPsec the IV happens to lie
just before the plain text so the IV generation simply increases the
number of encrypted blocks by one. Therefore the cost of this generator
is entirely dependent on the speed of the underlying cipher.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Tue, 27 Nov 2007 15:17:23 +0000 (23:17 +0800)]
[CRYPTO] chainiv: Add chain IV generator
The chain IV generator is the one we've been using in the IPsec stack.
It simply starts out with a random IV, then uses the last block of each
encrypted packet's cipher text as the IV for the next packet.
It can only be used by synchronous ciphers since we have to make sure
that we don't start the encryption of the next packet until the last
one has completed.
It does have the advantage of using very little CPU time since it doesn't
have to generate anything at all.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch creates the infrastructure to help the construction of givcipher
templates that wrap around existing blkcipher/ablkcipher algorithms by adding
an IV generator to them.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Tue, 27 Nov 2007 13:33:24 +0000 (21:33 +0800)]
[CRYPTO] skcipher: Added geniv field
This patch introduces the geniv field which indicates the default IV
generator for each algorithm. It should point to a string that is not
freed as long as the algorithm is registered.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Mon, 17 Dec 2007 13:51:27 +0000 (21:51 +0800)]
[CRYPTO] skcipher: Add givcrypt operations and givcipher type
Different block cipher modes have different requirements for intialisation
vectors. For example, CBC can use a simple randomly generated IV while
modes such as CTR must use an IV generation mechanisms that give a stronger
guarantee on the lack of collisions. Furthermore, disk encryption modes
have their own IV generation algorithms.
Up until now IV generation has been left to the users of the symmetric
key cipher API. This is inconvenient as the number of block cipher modes
increase because the user needs to be aware of which mode is supposed to
be paired with which IV generation algorithm.
Therefore it makes sense to integrate the IV generation into the crypto
API. This patch takes the first step in that direction by creating two
new ablkcipher operations, givencrypt and givdecrypt that generates an
IV before performing the actual encryption or decryption.
The operations are currently not exposed to the user. That will be done
once the underlying functionality has actually been implemented.
It also creates the underlying givcipher type. Algorithms that directly
generate IVs would use it instead of ablkcipher. All other algorithms
(including all existing ones) would generate a givcipher algorithm upon
registration. This givcipher algorithm will be constructed from the geniv
string that's stored in every algorithm. That string will locate a template
which is instantiated by the blkcipher/ablkcipher algorithm in question to
give a givcipher algorithm.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Note: From now on the collective of ablkcipher/blkcipher/givcipher will
be known as skcipher, i.e., symmetric key cipher. The name blkcipher has
always been much of a misnomer since it supports stream ciphers too.
This patch adds the function crypto_grab_skcipher as a new way of getting
an ablkcipher spawn. The problem is that previously we did this in two
steps, first getting the algorithm and then calling crypto_init_spawn.
This meant that each spawn user had to be aware of what type and mask to
use for these two steps. This is difficult and also presents a problem
when the type/mask changes as they're about to be for IV generators.
The new interface does both steps together just like crypto_alloc_ablkcipher.
As a side-effect this also allows us to be stronger on type enforcement
for spawns. For now this is only done for ablkcipher but it's trivial
to extend for other types.
This patch also moves the type/mask logic for skcipher into the helpers
crypto_skcipher_type and crypto_skcipher_mask.
Finally this patch introduces the function crypto_require_sync to determine
whether the user is specifically requesting a sync algorithm.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Mon, 17 Dec 2007 13:34:32 +0000 (21:34 +0800)]
[CRYPTO] ctr: Refactor into ctr and rfc3686
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 <herbert@gondor.apana.org.au>
Herbert Xu [Tue, 27 Nov 2007 11:48:27 +0000 (19:48 +0800)]
[CRYPTO] blkcipher: Merge ablkcipher and blkcipher into one option/module
With the impending addition of the givcipher type, both blkcipher and
ablkcipher algorithms will use it to create givcipher objects. As such
it no longer makes sense to split the system between ablkcipher and
blkcipher. In particular, both ablkcipher.c and blkcipher.c would need
to use the givcipher type which has to reside in ablkcipher.c since it
shares much code with it.
This patch merges the two Kconfig options as well as the modules into one.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Fri, 7 Dec 2007 12:18:17 +0000 (20:18 +0800)]
[CRYPTO] api: Add crypto_attr_alg_name
This patch adds a new helper crypto_attr_alg_name which is basically the
first half of crypto_attr_alg. That is, it returns an algorithm name
parameter as a string without looking it up. The caller can then look it
up immediately or defer it until later.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Sat, 1 Dec 2007 10:47:07 +0000 (21:47 +1100)]
[CRYPTO] api: Sanitise mask when allocating ablkcipher/hash
When allocating ablkcipher/hash objects, we use a mask that's wider than
the usual type mask. This patch sanitises the mask supplied by the user
so we don't end up using a narrower mask which may lead to unintended
results.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 6 Dec 2007 06:59:53 +0000 (14:59 +0800)]
[CRYPTO] gcm: Put abreq in private context instead of on stack
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 <herbert@gondor.apana.org.au>
Herbert Xu [Wed, 5 Dec 2007 09:59:25 +0000 (20:59 +1100)]
[CRYPTO] scatterwalk: Restore custom sg chaining for now
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 <herbert@gondor.apana.org.au>
Herbert Xu [Fri, 7 Dec 2007 10:52:49 +0000 (18:52 +0800)]
[CRYPTO] scatterwalk: Move scatterwalk.h to linux/crypto
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 <herbert@gondor.apana.org.au>
Herbert Xu [Tue, 4 Dec 2007 08:17:50 +0000 (19:17 +1100)]
[CRYPTO] gcm: Fix ICV handling
The crypto_aead convention for ICVs is to include it directly in the
output. If we decided to change this in future then we would make
the ICV (if the algorithm has an explicit one) available in the
request itself.
For now no algorithm needs this so this patch changes gcm to conform
to this convention. It also adjusts the tcrypt aead tests to take
this into account.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Tue, 4 Dec 2007 09:04:21 +0000 (20:04 +1100)]
[CRYPTO] authenc: Fix hash verification
The previous code incorrectly included the hash in the verification which
also meant that we'd crash and burn when it comes to actually verifying
the hash since we'd go past the end of the SG list.
This patch fixes that by subtracting authsize from cryptlen at the start.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 22 Nov 2007 15:11:53 +0000 (23:11 +0800)]
[CRYPTO] authenc: Move enckeylen into key itself
Having enckeylen as a template parameter makes it a pain for hardware
devices that implement ciphers with many key sizes since each one would
have to be registered separately.
Since the authenc algorithm is mainly used for legacy purposes where its
key is going to be constructed out of two separate keys, we can in fact
embed this value into the key itself.
This patch does this by prepending an rtnetlink header to the key that
contains the encryption key length.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Sun, 2 Dec 2007 07:49:21 +0000 (18:49 +1100)]
[CRYPTO] aead: Make authsize a run-time parameter
As it is authsize is an algorithm paramter which cannot be changed at
run-time. This is inconvenient because hardware that implements such
algorithms would have to register each authsize that they support
separately.
Since authsize is a property common to all AEAD algorithms, we can add
a function setauthsize that sets it at run-time, just like setkey.
This patch does exactly that and also changes authenc so that authsize
is no longer a parameter of its template.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
[HWRNG] pasemi: Add missing wait argument to data_present
drivers/char/hw_random/pasemi-rng.c: In function `pasemi_rng_data_present':
drivers/char/hw_random/pasemi-rng.c:53: error: `wait' undeclared (first use in this function)
drivers/char/hw_random/pasemi-rng.c:53: error: (Each undeclared identifier is reported only once
drivers/char/hw_random/pasemi-rng.c:53: error: for each function it appears in.)
drivers/char/hw_random/pasemi-rng.c: At top level:
drivers/char/hw_random/pasemi-rng.c:93: warning: initialization from incompatible pointer type
Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Some CPUs support only 128 bit keys in HW. This patch adds SW fallback
support for the other keys which may be required. The generic algorithm
(and the block mode) must be availble in case of a fallback.
Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tan Swee Heng [Thu, 29 Nov 2007 13:30:11 +0000 (00:30 +1100)]
[CRYPTO] tcrypt: Support for large test vectors
Currently the number of entries in a cipher test vector template is
limited by TVMEMSIZE/sizeof(struct cipher_testvec). This patch
circumvents the problem by pointing cipher_tv to each entry in the
template, rather than the template itself.
Signed-off-by: Tan Swee Heng <thesweeheng@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 29 Nov 2007 13:23:53 +0000 (00:23 +1100)]
[CRYPTO] ctr: Fix multi-page processing
When the data spans across a page boundary, CTR may incorrectly process
a partial block in the middle because the blkcipher walking code may
supply partial blocks in the middle as long as the total length of the
supplied data is more than a block. CTR is supposed to return any unused
partial block in that case to the walker.
This patch fixes this by doing exactly that, returning partial blocks to
the walker unless we received less than a block-worth of data to start
with.
This also allows us to optimise the bulk of the processing since we no
longer have to worry about partial blocks until the very end.
Thanks to Tan Swee Heng for fixes and actually testing this :)
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Denys Vlasenko [Fri, 23 Nov 2007 13:21:03 +0000 (21:21 +0800)]
[CRYPTO] camellia: Move more common code into camellia_setup_tail
Analogously to camellia7 patch, move
"absorb kw2 to other subkeys" and "absorb kw4 to other subkeys"
code parts into camellia_setup_tail(). This further reduces
source and object code size at the cost of two brances
in key setup code.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Denys Vlasenko [Fri, 23 Nov 2007 13:10:03 +0000 (21:10 +0800)]
[CRYPTO] camellia: Merge encrypt/decrypt routines for all key lengths
unifies encrypt/decrypt routines for different key lengths.
This reduces module size by ~25%, with tiny (less than 1%)
speed impact.
Also collapses encrypt/decrypt into more readable
(visually shorter) form using macros.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Denys Vlasenko [Fri, 23 Nov 2007 13:05:55 +0000 (21:05 +0800)]
[CRYPTO] camellia: Code shrink
Remove unused macro params.
Use (u8)(expr) instead of (expr) & 0xff,
helps gcc to realize how to use simpler commands.
Move CAMELLIA_FLS macro closer to encrypt/decrypt routines.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Tue, 20 Nov 2007 09:36:00 +0000 (17:36 +0800)]
[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>
Herbert Xu [Tue, 20 Nov 2007 09:26:06 +0000 (17:26 +0800)]
[CRYPTO] api: Add crypto_inc and crypto_xor
With the addition of more stream ciphers we need to curb the proliferation
of ad-hoc xor functions. This patch creates a generic pair of functions,
crypto_inc and crypto_xor which does big-endian increment and exclusive or,
respectively.
For optimum performance, they both use u32 operations so alignment must be
as that of u32 even though the arguments are of type u8 *.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Patrick McHardy [Wed, 21 Nov 2007 04:47:13 +0000 (12:47 +0800)]
[HIFN]: Improve PLL initialization
The current PLL initalization has a number of deficiencies:
- uses fixed multiplier of 8, which overclocks the chip when using a
reference clock that operates at frequencies above 33MHz. According
to a comment in the BSD source, this is true for the external clock
on almost all every board.
- writes to a reserved bit
- doesn't follow the initialization procedure specified in chapter
6.11.1 of the HIFN hardware users guide
- doesn't allow to use the PCI clock
This patch adds a module parameter to specify the reference clock
(pci or external) and its frequency and uses that to calculate the
optimum multiplier to reach the maximal speed. By default it uses
the external clock and assumes a speed of 66MHz, which effectively
halfs the frequency currently used.
Signed-off-by: Patrick McHardy <kaber@trash.net> Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tan Swee Heng [Fri, 23 Nov 2007 11:45:00 +0000 (19:45 +0800)]
[CRYPTO] salsa20: Salsa20 stream cipher
This patch implements the Salsa20 stream cipher using the blkcipher interface.
The core cipher code comes from Daniel Bernstein's submission to eSTREAM:
http://www.ecrypt.eu.org/stream/svn/viewcvs.cgi/ecrypt/trunk/submissions/salsa20/full/ref/
The test vectors comes from:
http://www.ecrypt.eu.org/stream/svn/viewcvs.cgi/ecrypt/trunk/submissions/salsa20/full/
It has been tested successfully with "modprobe tcrypt mode=34" on an
UML instance.
Signed-off-by: Tan Swee Heng <thesweeheng@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 15 Nov 2007 14:36:07 +0000 (22:36 +0800)]
[CRYPTO] ablkcipher: Add distinct ABLKCIPHER type
Up until now we have ablkcipher algorithms have been identified as
type BLKCIPHER with the ASYNC bit set. This is suboptimal because
ablkcipher refers to two things. On the one hand it refers to the
top-level ablkcipher interface with requests. On the other hand it
refers to and algorithm type underneath.
As it is you cannot request a synchronous block cipher algorithm
with the ablkcipher interface on top. This is a problem because
we want to be able to eventually phase out the blkcipher top-level
interface.
This patch fixes this by making ABLKCIPHER its own type, just as
we have distinct types for HASH and DIGEST. The type it associated
with the algorithm implementation only.
Which top-level interface is used for synchronous block ciphers is
then determined by the mask that's used. If it's a specific mask
then the old blkcipher interface is given, otherwise we go with the
new ablkcipher interface.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu [Thu, 15 Nov 2007 11:00:06 +0000 (19:00 +0800)]
[CRYPTO] doc: Update api-intro.txt
This patch updates the list of transforms we support and clarifies that
the Block Ciphers interface in fact supports all ciphers including stream
ciphers.
It also removes the obsolete Configuration Notes section and adds the
linux-crypto mailing list as the primary bug reporting address.
Finally it documents the fact that setkey should only be called from
user context.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Andrew Morton [Tue, 13 Nov 2007 13:55:28 +0000 (21:55 +0800)]
[CRYPTO] hifn: Add missing includes
alpha:
drivers/crypto/hifn_795x.c: In function 'ablkcipher_walk_init':
drivers/crypto/hifn_795x.c:1231: error: implicit declaration of function 'sg_init_table'
drivers/crypto/hifn_795x.c:1243: error: implicit declaration of function 'sg_set_page'
drivers/crypto/hifn_795x.c: In function 'ablkcipher_walk_exit':
drivers/crypto/hifn_795x.c:1257: error: implicit declaration of function 'sg_page'
drivers/crypto/hifn_795x.c:1257: warning: passing argument 1 of '__free_pages' makes pointer from integer without a cast
drivers/crypto/hifn_795x.c: In function 'ablkcipher_add':
drivers/crypto/hifn_795x.c:1278: warning: passing argument 1 of 'kmap_atomic' makes pointer from integer without a cast
drivers/crypto/hifn_795x.c: In function 'ablkcipher_walk':
drivers/crypto/hifn_795x.c:1336: warning: passing argument 1 of 'kmap_atomic' makes pointer from integer without a cast
drivers/crypto/hifn_795x.c: In function 'hifn_setup_session':
drivers/crypto/hifn_795x.c:1465: warning: assignment makes pointer from integer without a cast
drivers/crypto/hifn_795x.c:1469: warning: assignment makes pointer from integer without a cast
drivers/crypto/hifn_795x.c:1472: warning: assignment makes pointer from integer without a cast
drivers/crypto/hifn_795x.c: In function 'ablkcipher_get':
drivers/crypto/hifn_795x.c:1593: warning: passing argument 1 of 'kmap_atomic' makes pointer from integer without a cast
{standard input}: Assembler messages:
{standard input}:7: Warning: setting incorrect section attributes for .got
drivers/crypto/hifn_795x.c: In function 'hifn_process_ready':
drivers/crypto/hifn_795x.c:1653: warning: passing argument 1 of 'kmap_atomic' makes pointer from integer without a cast
drivers/crypto/hifn_795x.c: In function 'hifn_probe':
drivers/crypto/hifn_795x.c:2438: error: 'DMA_32BIT_MASK' undeclared (first use in this function)
drivers/crypto/hifn_795x.c:2438: error: (Each undeclared identifier is reported only once
drivers/crypto/hifn_795x.c:2438: error: for each function it appears in.)
drivers/crypto/hifn_795x.c:2443: warning: format '%d' expects type 'int', but argument 4 has type 'long int'
drivers/crypto/hifn_795x.c:2443: warning: format '%d' expects type 'int', but argument 4 has type 'long int'
Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jan Glauber [Mon, 12 Nov 2007 13:56:38 +0000 (21:56 +0800)]
[CRYPTO] hifn: Make Kconfig option depend on PCI
The HIFN driver is currently selectable on s390 but wont compile.
Since it looks like HIFN needs PCI make the Kconfig dependent on PCI,
which is not available on s390.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Evgeniy Polyakov [Sat, 10 Nov 2007 12:24:18 +0000 (20:24 +0800)]
[CRYPTO] hifn: Schedule callback invocation to tasklet.
This patch forces HIFN driver to invoke crypto request callbacks from
tasklet (softirq context) instead of hardirq context, since network
stack expects it to be called from bottom halves.
It is done by simply scheduling callback invocation via dedicated
tasklet. Workqueue solution was dropped because of tooo slow
rescheduling performance (7 times slower than tasklet, for mode details
one can check this link:
http://tservice.net.ru/~s0mbre/blog/devel/other/2007_11_09.html).
Driver passed all AES and DES tests in tcryt.c module.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Jonathan Lynch [Sat, 10 Nov 2007 12:08:25 +0000 (20:08 +0800)]
[CRYPTO] sha256-generic: Extend sha256_generic.c to support SHA-224
Resubmitting this patch which extends sha256_generic.c to support SHA-224 as
described in FIPS 180-2 and RFC 3874. HMAC-SHA-224 as described in RFC4231
is then supported through the hmac interface.
Patch includes test vectors for SHA-224 and HMAC-SHA-224.
SHA-224 chould be chosen as a hash algorithm when 112 bits of security
strength is required.
Patch generated against the 2.6.24-rc1 kernel and tested against
2.6.24-rc1-git14 which includes fix for scatter gather implementation for HMAC.
Signed-off-by: Jonathan Lynch <jonathan.lynch@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
[CRYPTO] geode: Add fallback for unsupported modes
The Geode AES crypto engine supports only 128 bit long key. This
patch adds fallback for other key sizes which are required by the
AES standard.
Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Acked-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
[CRYPTO] aes-generic: Make key generation exportable
This patch exports four tables and the set_key() routine. This ressources
can be shared by other AES implementations (aes-x86_64 for instance).
The decryption key has been turned around (deckey[0] is the first piece
of the key instead of deckey[keylen+20]). The encrypt/decrypt functions
are looking now identical (except they are using different tables and
key).
Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
projects / linux-2.6 / log