Commit Graph

1535 Commits

Author SHA1 Message Date
Martin Willi 71ebc4d1b2 crypto: chacha20poly1305 - Add a ChaCha20-Poly1305 AEAD construction, RFC7539
This AEAD uses a chacha20 ablkcipher and a poly1305 ahash to construct the
ChaCha20-Poly1305 AEAD as defined in RFC7539. It supports both synchronous and
asynchronous operations, even if we currently have no async chacha20 or poly1305
drivers.

Signed-off-by: Martin Willi <martin@strongswan.org>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-04 15:04:52 +08:00
Martin Willi eee9dc6162 crypto: testmgr - Add Poly1305 test vectors from RFC7539
Signed-off-by: Martin Willi <martin@strongswan.org>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-04 15:04:51 +08:00
Martin Willi f979e014c5 crypto: poly1305 - Add a generic Poly1305 authenticator implementation
Poly1305 is a fast message authenticator designed by Daniel J. Bernstein.
It is further defined in RFC7539 as a building block for the ChaCha20-Poly1305
AEAD for use in IETF protocols.

This is a portable C implementation of the algorithm without architecture
specific optimizations, based on public domain code by Daniel J. Bernstein and
Andrew Moon.

Signed-off-by: Martin Willi <martin@strongswan.org>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-04 15:04:50 +08:00
Martin Willi 3590ebf2b4 crypto: testmgr - Add ChaCha20 test vectors from RFC7539
We explicitly set the Initial block Counter by prepending it to the nonce in
Little Endian. The same test vector is used for both encryption and decryption,
ChaCha20 is a cipher XORing a keystream.

Signed-off-by: Martin Willi <martin@strongswan.org>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-04 15:04:50 +08:00
Martin Willi c08d0e6473 crypto: chacha20 - Add a generic ChaCha20 stream cipher implementation
ChaCha20 is a high speed 256-bit key size stream cipher algorithm designed by
Daniel J. Bernstein. It is further specified in RFC7539 for use in IETF
protocols as a building block for the ChaCha20-Poly1305 AEAD.

This is a portable C implementation without any architecture specific
optimizations. It uses a 16-byte IV, which includes the 12-byte ChaCha20 nonce
prepended by the initial block counter. Some algorithms require an explicit
counter value, for example the mentioned AEAD construction.

Signed-off-by: Martin Willi <martin@strongswan.org>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-04 15:04:49 +08:00
Herbert Xu 160544075f crypto: scatterwalk - Hide PageSlab call to optimise away flush_dcache_page
On architectures where flush_dcache_page is not needed, we will
end up generating all the code up to the PageSlab call.  This is
because PageSlab operates on a volatile pointer and thus cannot
be optimised away.

This patch works around this by checking whether flush_dcache_page
is needed before we call PageSlab which then allows PageSlab to be
compiled awy.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-03 10:51:25 +08:00
Herbert Xu f614e546f5 crypto: cryptd - Convert to new AEAD interface
This patch converts cryptd to the new AEAD interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-03 10:48:37 +08:00
Herbert Xu 92b9876bdd crypto: cryptd - Add setkey/setauthsize functions for AEAD
This patch adds setkey and setauthsize for cryptd AEAD.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-03 10:48:35 +08:00
Herbert Xu 0496f56065 crypto: pcrypt - Add support for new AEAD interface
This patch converts pcrypt over to the new AEAD interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-03 10:48:35 +08:00
Herbert Xu caab94612a crypto: aead - Add multiple algorithm registration interface
This patch adds the helpers that allow the registration and removal
of multiple algorithms.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-03 10:48:35 +08:00
Herbert Xu 43615369ab crypto: aead - Ignore return value from crypto_unregister_alg
No new code should be using the return value of crypto_unregister_alg
as it will become void soon.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-03 10:48:34 +08:00
Herbert Xu c2110f2834 crypto: api - Include alignment in crypto_alg_extsize
This patch ensures that the tfm context always has enough extra
memory to ensure that it is aligned according to cra_alignment.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-03 10:48:34 +08:00
Herbert Xu 5eb8ec6dc8 crypto: aead - Add type-safe init/exit functions
As it stands the only non-type safe functions left in the new
AEAD interface are the cra_init/cra_exit functions.  It means
exposing the ugly __crypto_aead_cast to every AEAD implementor.

This patch adds type-safe init/exit functions to AEAD.  Existing
algorithms are unaffected while new implementations can simply
fill in these two instead of cra_init/cra_exit.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-03 10:48:33 +08:00
Herbert Xu b64a2d9552 Revert "crypto: algif_aead - Disable AEAD user-space for now"
This reverts commit f858c7bcca as
the algif_aead interface has been switched over to the new AEAD
interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-03 10:48:31 +08:00
David S. Miller dda922c831 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/phy/amd-xgbe-phy.c
	drivers/net/wireless/iwlwifi/Kconfig
	include/net/mac80211.h

iwlwifi/Kconfig and mac80211.h were both trivial overlapping
changes.

The drivers/net/phy/amd-xgbe-phy.c file got removed in 'net-next' and
the bug fix that happened on the 'net' side is already integrated
into the rest of the amd-xgbe driver.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-01 22:51:30 -07:00
Stephan Mueller cf58fcb1be crypto: jitterentropy - remove timekeeping_valid_for_hres
The patch removes the use of timekeeping_valid_for_hres which is now
marked as internal for the time keeping subsystem. The jitterentropy
does not really require this verification as a coarse timer (when
random_get_entropy is absent) is discovered by the initialization test
of jent_entropy_init, which would cause the jitter rng to not load in
that case.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:21 +08:00
Herbert Xu 19fa77522e crypto: algif_aead - Switch to new AEAD interface
This patch makes use of the new AEAD interface which uses a single
SG list instead of separate lists for the AD and plain text.

Note that the user-space interface now requires both input and
output to be of the same length, and both must include space for
the AD as well as the authentication tag.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:21 +08:00
Herbert Xu a3f2185a29 crypto: tcrypt - Switch to new AEAD interface
This patch makes use of the new AEAD interface which uses a single
SG list instead of separate lists for the AD and plain text.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:21 +08:00
Herbert Xu 8a525fcd46 crypto: testmgr - Switch to new AEAD interface
This patch makes use of the new AEAD interface which uses a single
SG list instead of separate lists for the AD and plain text.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:19 +08:00
Herbert Xu 056c04ba8b crypto: seqiv - Fix module unload/reload crash
On module unload we weren't unregistering the seqniv template,
thus leading to a crash the next time someone walks the template
list.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:19 +08:00
Herbert Xu ccdb8a0384 crypto: seqiv - Fix IV size in context size calculation
This patch fixes a bug in the context size calculation where we
were still referring to the old cra_aead.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:19 +08:00
Herbert Xu 661cfd0e5e crypto: seqiv - Use common IV generation code
This patch makes use of the new common IV generation code.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:18 +08:00
Herbert Xu d0ad1b246d crypto: seqiv - Copy AD along with plain/cipher text
As the AD does not necessarily exist in the destination buffer
it must be copied along with the plain/cipher text.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:18 +08:00
Herbert Xu 9d03aee125 crypto: echainiv - Fix IV size in context size calculation
This patch fixes a bug in the context size calculation where we
were still referring to the old cra_aead.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:18 +08:00
Herbert Xu d97de47ca1 crypto: echainiv - Use common IV generation code
This patch makes use of the new common IV generation code.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:18 +08:00
Herbert Xu 838c9d561a crypto: echainiv - Copy AD along with plain text
As the AD does not necessarily exist in the destination buffer
it must be copied along with the plain text.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:18 +08:00
Herbert Xu 6350449fbf crypto: aead - Add common IV generation code
This patch adds some common IV generation code currently duplicated
by seqiv and echainiv.  For example, the setkey and setauthsize
functions are completely identical.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:17 +08:00
Herbert Xu b455eb80f1 crypto: aead - Preserve in-place processing in old_crypt
This patch tries to preserve in-place processing in old_crypt as
various algorithms are optimised for in-place processing where
src == dst.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:17 +08:00
Herbert Xu fdaef75f66 crypto: scatterwalk - Add missing sg_init_table to scatterwalk_ffwd
We need to call sg_init_table as otherwise the first entry may
inadvertently become the last.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-28 11:23:17 +08:00
Herbert Xu 6d7e3d8995 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Merge the crypto tree for 4.1 to pull in the changeset that disables
algif_aead.
2015-05-28 11:16:41 +08:00
Linus Torvalds c09b5cbd0d Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
 "This disables the newly (4.1) added user-space AEAD interface so that
  we can fix issues in the underlying kernel AEAD interface.  Once the
  new kernel AEAD interface is ready we can then reenable the user-space
  AEAD interface"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: algif_aead - Disable AEAD user-space for now
2015-05-27 08:40:44 -07:00
Stephan Mueller bb5530e408 crypto: jitterentropy - add jitterentropy RNG
The CPU Jitter RNG provides a source of good entropy by
collecting CPU executing time jitter. The entropy in the CPU
execution time jitter is magnified by the CPU Jitter Random
Number Generator. The CPU Jitter Random Number Generator uses
the CPU execution timing jitter to generate a bit stream
which complies with different statistical measurements that
determine the bit stream is random.

The CPU Jitter Random Number Generator delivers entropy which
follows information theoretical requirements. Based on these
studies and the implementation, the caller can assume that
one bit of data extracted from the CPU Jitter Random Number
Generator holds one bit of entropy.

The CPU Jitter Random Number Generator provides a decentralized
source of entropy, i.e. every caller can operate on a private
state of the entropy pool.

The RNG does not have any dependencies on any other service
in the kernel. The RNG only needs a high-resolution time
stamp.

Further design details, the cryptographic assessment and
large array of test results are documented at
http://www.chronox.de/jent.html.

CC: Andreas Steffen <andreas.steffen@strongswan.org>
CC: Theodore Ts'o <tytso@mit.edu>
CC: Sandy Harris <sandyinchina@gmail.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-27 17:51:54 +08:00
Stephan Mueller b8ec5ba42c crypto: drbg - use Jitter RNG to obtain seed
During initialization, the DRBG now tries to allocate a handle of the
Jitter RNG. If such a Jitter RNG is available during seeding, the DRBG
pulls the required entropy/nonce string from get_random_bytes and
concatenates it with a string of equal size from the Jitter RNG. That
combined string is now the seed for the DRBG.

Written differently, the initial seed of the DRBG is now:

get_random_bytes(entropy/nonce) || jitterentropy (entropy/nonce)

If the Jitter RNG is not available, the DRBG only seeds from
get_random_bytes.

CC: Andreas Steffen <andreas.steffen@strongswan.org>
CC: Theodore Ts'o <tytso@mit.edu>
CC: Sandy Harris <sandyinchina@gmail.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-27 17:51:53 +08:00
Stephan Mueller 4c7879907e crypto: drbg - add async seeding operation
The async seeding operation is triggered during initalization right
after the first non-blocking seeding is completed. As required by the
asynchronous operation of random.c, a callback function is provided that
is triggered by random.c once entropy is available. That callback
function performs the actual seeding of the DRBG.

CC: Andreas Steffen <andreas.steffen@strongswan.org>
CC: Theodore Ts'o <tytso@mit.edu>
CC: Sandy Harris <sandyinchina@gmail.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-27 17:51:53 +08:00
Stephan Mueller 3d6a5f75d1 crypto: drbg - prepare for async seeding
In order to prepare for the addition of the asynchronous seeding call,
the invocation of seeding the DRBG is moved out into a helper function.

In addition, a block of memory is allocated during initialization time
that will be used as a scratchpad for obtaining entropy. That scratchpad
is used for the initial seeding operation as well as by the
asynchronous seeding call. The memory must be zeroized every time the
DRBG seeding call succeeds to avoid entropy data lingering in memory.

CC: Andreas Steffen <andreas.steffen@strongswan.org>
CC: Theodore Ts'o <tytso@mit.edu>
CC: Sandy Harris <sandyinchina@gmail.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-27 17:51:53 +08:00
Herbert Xu f858c7bcca crypto: algif_aead - Disable AEAD user-space for now
The newly added AEAD user-space isn't quite ready for prime time
just yet.  In particular it is conflicting with the AEAD single
SG list interface change so this patch disables it now.

Once the SG list stuff is completely done we can then renable
this interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-26 15:51:45 +08:00
Herbert Xu 374d4ad18a crypto: aead - Remove unused cryptoff parameter
This patch removes the cryptoff parameter now that all users
set it to zero.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:32 +08:00
Herbert Xu dd04446e48 crypto: seqiv - Stop using cryptoff
The cryptoff parameter was added to facilitate the skipping of
IVs that sit between the AD and the plain/cipher text.  However,
it was never implemented correctly as and we do not handle users
such as IPsec setting cryptoff.  It is simply ignored.

Implementing correctly is in fact more trouble than what it's
worth.

This patch removes the uses of cryptoff by moving the AD forward
to fill the gap left by the IV.  The AD is moved back after the
underlying AEAD processing is finished.

This is in fact beter than the cryptoff solution because it allows
algorithms that use seqniv (i.e., GCM and CCM) to hash the whole
packet as a single piece, while cryptoff meant that there was
guaranteed to be a gap.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:31 +08:00
Herbert Xu 823655c99b crypto: echainiv - Stop using cryptoff
The cryptoff parameter was added to facilitate the skipping of
IVs that sit between the AD and the plain/cipher text.  However,
it was never implemented correctly as and we do not handle users
such as IPsec setting cryptoff.  It is simply ignored.

Implementing correctly is in fact more trouble than what it's
worth.

This patch removes the uses of cryptoff and simply falls back
to using the old AEAD interface as it's only needed for old AEAD
implementations.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:31 +08:00
Herbert Xu d1ee1f02b7 crypto: aead - Do not set cra_type for new style instances
The function aead_geniv_alloc currently sets cra_type even for
new style instances.  This is unnecessary and may hide bugs such
as when our caller uses crypto_register_instance instead of the
correct aead_register_instance.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:31 +08:00
Herbert Xu 1e419c7970 crypto: echainiv - Use aead_register_instance
New style AEAD instances must use aead_register_instance.  This
worked by chance because aead_geniv_alloc is still setting things
the old way.

This patch converts the template over to the create model where
we are responsible for instance registration so that we can call
the correct function.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:30 +08:00
Herbert Xu 0677157b2b crypto: seqiv - Use aead_register_instance
New style AEAD instances must use aead_register_instance.  This
worked by chance because aead_geniv_alloc is still setting things
the old way.

This patch converts the template over to the create model where
we are responsible for instance registration so that we can call
the correct function.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:30 +08:00
Herbert Xu 72af865d34 crypto: aead - Use tmpl->create
Newer templates use tmpl->create and have a NULL tmpl->alloc.  So
we must use tmpl->create if it is set.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:29 +08:00
Herbert Xu 56e34378bb crypto: skcipher - Use tmpl->create
Newer templates use tmpl->create and have a NULL tmpl->alloc.  So
we must use tmpl->create if it is set.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:28 +08:00
Wu Fengguang 622ff87527 crypto: echainiv - echainiv_read_iv() can be static
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:28 +08:00
Herbert Xu a5a22e57f6 crypto: pcrypt - Make tfm_count an atomic_t
The variable tfm_count is accessed by multiple threads without
locking.  This patch converts it to an atomic_t.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:25 +08:00
Herbert Xu 30e4c010ae crypto: aead - Add crypto_aead_alg_ivsize/maxauthsize
AEAD algorithm implementors need to figure out a given algorithm's
IV size and maximum authentication size.  During the transition
this is difficult to do as an algorithm could be new style or old
style.

This patch creates two helpers to make this easier.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:25 +08:00
Harald Freudenberger 445a8e0df3 crypto: testmgr - Added one larger ghash testvector (400 bytes) to the testmgr.
Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-25 18:41:22 +08:00
David S. Miller 36583eb54d Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/cadence/macb.c
	drivers/net/phy/phy.c
	include/linux/skbuff.h
	net/ipv4/tcp.c
	net/switchdev/switchdev.c

Switchdev was a case of RTNH_H_{EXTERNAL --> OFFLOAD}
renaming overlapping with net-next changes of various
sorts.

phy.c was a case of two changes, one adding a local
variable to a function whilst the second was removing
one.

tcp.c overlapped a deadlock fix with the addition of new tcp_info
statistic values.

macb.c involved the addition of two zyncq device entries.

skbuff.h involved adding back ipv4_daddr to nf_bridge_info
whilst net-next changes put two other existing members of
that struct into a union.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-23 01:22:35 -04:00
Herbert Xu a10f554fa7 crypto: echainiv - Add encrypted chain IV generator
This patch adds a new AEAD IV generator echainiv.  It is intended
to replace the existing skcipher IV generator eseqiv.

If the underlying AEAD algorithm is using the old AEAD interface,
then echainiv will simply use its IV generator.

Otherwise, echainiv will encrypt a counter just like eseqiv but
it'll first xor it against a previously stored IV similar to
chainiv.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:56 +08:00
Herbert Xu 3c08fee7b5 crypto: seqiv - Add seqniv
This patch adds a new IV generator seqniv which is identical to
seqiv except that it skips the IV when authenticating.  This is
intended to be used by algorithms such as rfc4106 that does the
IV authentication implicitly.

Note that the code used for seqniv is in fact identical to the
compatibility case for seqiv.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:56 +08:00
Herbert Xu 856e3f4092 crypto: seqiv - Add support for new AEAD interface
This patch converts the seqiv IV generator to work with the new
AEAD interface where IV generators are just normal AEAD algorithms.

Full backwards compatibility is paramount at this point since
no users have yet switched over to the new interface.  Nor can
they switch to the new interface until IV generation is fully
supported by it.

So this means we are adding two versions of seqiv alongside the
existing one.  The first one is the one that will be used when
the underlying AEAD algorithm has switched over to the new AEAD
interface.  The second one handles the current case where the
underlying AEAD algorithm still uses the old interface.

Both versions export themselves through the new AEAD interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:56 +08:00
Herbert Xu 74412fd5d7 crypto: scatterwalk - Check for same address in map_and_copy
This patch adds a check for in scatterwalk_map_and_copy to avoid
copying from the same address to the same address.  This is going
to be used for IV copying in AEAD IV generators.

There is no provision for partial overlaps.

This patch also uses the new scatterwalk_ffwd instead of doing
it by hand in scatterwalk_map_and_copy.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:55 +08:00
Herbert Xu 17db854699 crypto: gcm - Use default null skcipher
This patch makes gcm use the default null skcipher instead of
allocating a new one for each tfm.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:55 +08:00
Herbert Xu 330234638e crypto: null - Add default null skcipher
This patch adds a default null skcipher for users such as gcm
to perform copies on SG lists.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:55 +08:00
Herbert Xu 63293c6113 crypto: aead - Add support for new AEAD implementations
This patch adds the basic structure of the new AEAD type.  Unlike
the current version, there is no longer any concept of geniv.  IV
generation will still be carried out by wrappers but they will be
normal AEAD algorithms that simply take the IPsec sequence number
as the IV.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:54 +08:00
Herbert Xu 2d0f230fe0 crypto: aead - Rename aead_alg to old_aead_alg
This patch is the first step in the introduction of a new AEAD
alg type.  Unlike normal conversions this patch only renames the
existing aead_alg structure because there are external references
to it.

Those references will be removed after this patch.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:51 +08:00
Herbert Xu 996d98d85c crypto: aead - Add new interface with single SG list
The primary user of AEAD, IPsec includes the IV in the AD in
most cases, except where it is implicitly authenticated by the
underlying algorithm.

The way it is currently implemented is a hack because we pass
the data in piecemeal and the underlying algorithms try to stitch
them back up into one piece.

This is why this patch is adding a new interface that allows a
single SG list to be passed in that contains everything so the
algorithm implementors do not have to stitch.

The new interface accepts a single source SG list and a single
destination SG list.  Both must be laid out as follows:

	AD, skipped data, plain/cipher text, ICV

The ICV is not present from the source during encryption and from
the destination during decryption.

For the top-level IPsec AEAD algorithm the plain/cipher text will
contain the generated (or received) IV.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:51 +08:00
Herbert Xu fc42bcba97 crypto: scatterwalk - Add scatterwalk_ffwd helper
This patch adds the scatterwalk_ffwd helper which can create an
SG list that starts in the middle of an existing SG list.  The
new list may either be part of the existing list or be a chain
that latches onto part of the existing list.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:50 +08:00
Herbert Xu 66d948e732 crypto: pcrypt - Use crypto_grab_aead
As AEAD has switched over to using frontend types, the function
crypto_init_spawn must not be used since it does not specify a
frontend type.  Otherwise it leads to a crash when the spawn is
used.

This patch fixes it by switching over to crypto_grab_aead instead.

Fixes: 5d1d65f8be ("crypto: aead - Convert top level interface to new style")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:49 +08:00
Herbert Xu 9b8c456e08 crypto: cryptd - Use crypto_grab_aead
As AEAD has switched over to using frontend types, the function
crypto_init_spawn must not be used since it does not specify a
frontend type.  Otherwise it leads to a crash when the spawn is
used.

This patch fixes it by switching over to crypto_grab_aead instead.

Fixes: 5d1d65f8be ("crypto: aead - Convert top level interface to new style")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-22 11:25:49 +08:00
Linus Torvalds e51a363056 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
 "This fixes a the crash in the newly added algif_aead interface when it
  tries to link SG lists"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: algif_aead - fix invalid sgl linking
2015-05-21 17:16:49 -07:00
Mimi Zohar f2b3dee484 KEYS: fix "ca_keys=" partial key matching
The call to asymmetric_key_hex_to_key_id() from ca_keys_setup()
silently fails with -ENOMEM.  Instead of dynamically allocating
memory from a __setup function, this patch defines a variable
and calls __asymmetric_key_hex_to_key_id(), a new helper function,
directly.

This bug was introduced by 'commit 46963b774d ("KEYS: Overhaul
key identification when searching for asymmetric keys")'.

Changelog:
- for clarification, rename hexlen to asciihexlen in
  asymmetric_key_hex_to_key_id()
- add size argument to __asymmetric_key_hex_to_key_id() - David Howells
- inline __asymmetric_key_hex_to_key_id() - David Howells
- remove duplicate strlen() calls

Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org # 3.18
2015-05-21 13:58:59 -04:00
LABBE Corentin 6a185016f4 crypto: md5 - use md5 IV MD5_HX instead of their raw value
Since MD5 IV are now available in crypto/md5.h, use them.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-18 12:20:18 +08:00
Tadeusz Struk 7b2a18e05f crypto: algif_aead - fix invalid sgl linking
This patch fixes it.
Also minor updates to comments.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-18 12:13:06 +08:00
Herbert Xu 5d1d65f8be crypto: aead - Convert top level interface to new style
This patch converts the top-level aead interface to the new style.
All user-level AEAD interface code have been moved into crypto/aead.h.

The allocation/free functions have switched over to the new way of
allocating tfms.

This patch also removes the double indrection on setkey so the
indirection now exists only at the alg level.

Apart from these there are no user-visible changes.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:53 +08:00
Herbert Xu ba6d8e3958 crypto: seqiv - Use crypto_aead_set_reqsize helper
This patch uses the crypto_aead_set_reqsize helper to avoid directly
touching the internals of aead.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:41 +08:00
Herbert Xu fd0de97890 crypto: pcrypt - Use crypto_aead_set_reqsize helper
This patch uses the crypto_aead_set_reqsize helper to avoid directly
touching the internals of aead.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:41 +08:00
Herbert Xu 5d72336f1b crypto: gcm - Use crypto_aead_set_reqsize helper
This patch uses the crypto_aead_set_reqsize helper to avoid directly
touching the internals of aead.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:40 +08:00
Herbert Xu 529a0b625b crypto: cryptd - Use crypto_aead_set_reqsize helper
This patch uses the crypto_aead_set_reqsize helper to avoid directly
touching the internals of aead.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:40 +08:00
Herbert Xu 2c221ad394 crypto: ccm - Use crypto_aead_set_reqsize helper
This patch uses the crypto_aead_set_reqsize helper to avoid directly
touching the internals of aead.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:39 +08:00
Herbert Xu 6650d09b3a crypto: authencesn - Use crypto_aead_set_reqsize helper
This patch uses the crypto_aead_set_reqsize helper to avoid directly
touching the internals of aead.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:38 +08:00
Herbert Xu 25df919430 crypto: authenc - Use crypto_aead_set_reqsize helper
This patch uses the crypto_aead_set_reqsize helper to avoid directly
touching the internals of aead.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:37 +08:00
Herbert Xu d1a2fd500c crypto: blkcipher - Include crypto/aead.h
All users of AEAD should include crypto/aead.h instead of
include/linux/crypto.h.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:34 +08:00
Herbert Xu 7fb2a4bdce crypto: authencesn - Include internal/aead.h
All AEAD implementations must include internal/aead.h in order
to access required helpers.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:26 +08:00
Herbert Xu 68acbf843c crypto: authenc - Include internal/aead.h
All AEAD implementations must include internal/aead.h in order
to access required helpers.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:26 +08:00
Herbert Xu d6ef2f198d crypto: api - Add crypto_grab_spawn primitive
This patch adds a new primitive crypto_grab_spawn which is meant
to replace crypto_init_spawn and crypto_init_spawn2.  Under the
new scheme the user no longer has to worry about reference counting
the alg object before it is subsumed by the spawn.

It is pretty much an exact copy of crypto_grab_aead.

Prior to calling this function spawn->frontend and spawn->inst
must have been set.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-13 10:31:25 +08:00
Eric W. Biederman 11aa9c28b4 net: Pass kern from net_proto_family.create to sk_alloc
In preparation for changing how struct net is refcounted
on kernel sockets pass the knowledge that we are creating
a kernel socket from sock_create_kern through to sk_alloc.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-11 10:50:17 -04:00
Dan Streetman 2062c5b6da crypto: 842 - change 842 alg to use software
Change the crypto 842 compression alg to use the software 842 compression
and decompression library.  Add the crypto driver_name as "842-generic".
Remove the fallback to LZO compression.

Previously, this crypto compression alg attemped 842 compression using
PowerPC hardware, and fell back to LZO compression and decompression if
the 842 PowerPC hardware was unavailable or failed.  This should not
fall back to any other compression method, however; users of this crypto
compression alg can fallback if desired, and transparent fallback tricks
callers into thinking they are getting 842 compression when they actually
get LZO compression - the failure of the 842 hardware should not be
transparent to the caller.

The crypto compression alg for a hardware device also should not be located
in crypto/ so this is now a software-only implementation that uses the 842
software compression/decompression library.

Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-11 15:06:43 +08:00
Ard Biesheuvel ebb3472f5c crypto: testmgr - add test cases for CRC32
This adds a couple of test cases for CRC32 (not CRC32c) to
ensure that the generic and arch specific implementations
are in sync.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-11 15:06:36 +08:00
David Howells 09e217844a crypto: testmgr - Wrap the LHS in expressions of the form !x == y
In the test manager, there are a number of if-statements with expressions of
the form !x == y that incur warnings with gcc-5 of the following form:

../crypto/testmgr.c: In function '__test_aead':
../crypto/testmgr.c:523:12: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
   if (!ret == template[i].fail) {
            ^

By converting the 'fail' member of struct aead_testvec and struct
cipher_testvec to a bool, we can get rid of the warnings.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-01 11:16:37 +08:00
David Howells f94a359763 crypto: pcomp - Constify (de)compression parameters
In testmgr, struct pcomp_testvec takes a non-const 'params' field, which is
pointed to a const deflate_comp_params or deflate_decomp_params object.  With
gcc-5 this incurs the following warnings:

In file included from ../crypto/testmgr.c:44:0:
../crypto/testmgr.h:28736:13: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-array-qualifiers]
   .params = &deflate_comp_params,
             ^
../crypto/testmgr.h:28748:13: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-array-qualifiers]
   .params = &deflate_comp_params,
             ^
../crypto/testmgr.h:28776:13: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-array-qualifiers]
   .params = &deflate_decomp_params,
             ^
../crypto/testmgr.h:28800:13: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-array-qualifiers]
   .params = &deflate_decomp_params,
             ^

Fix this by making the parameters pointer const and constifying the things
that use it.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-05-01 11:16:37 +08:00
Herbert Xu 80f7b3552c crypto: aead - Fix corner case in crypto_lookup_aead
When the user explicitly states that they don't care whether the
algorithm has been tested (type = CRYPTO_ALG_TESTED and mask = 0),
there is a corner case where we may erroneously return ENOENT.

This patch fixes it by correcting the logic in the test.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-26 14:33:16 +08:00
Herbert Xu 2673953520 crypto: skcipher - Fix corner case in crypto_lookup_skcipher
When the user explicitly states that they don't care whether the
algorithm has been tested (type = CRYPTO_ALG_TESTED and mask = 0),
there is a corner case where we may erroneously return ENOENT.

This patch fixes it by correcting the logic in the test.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-26 14:33:15 +08:00
Herbert Xu bd4a7c69aa crypto: api - Fix build error when modules are disabled
The commit 59afdc7b32 ("crypto:
api - Move module sig ifdef into accessor function") broke the
build when modules are completely disabled because we directly
dereference module->name.

This patch fixes this by using the accessor function module_name.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-26 14:33:15 +08:00
Linus Torvalds 474095e46c md updates for 4.1
Highlights:
 
 - "experimental" code for managing md/raid1 across a cluster using
   DLM.  Code is not ready for general use and triggers a WARNING if used.
   However it is looking good and mostly done and having in mainline
   will help co-ordinate development.
 - RAID5/6 can now batch multiple (4K wide) stripe_heads so as to
   handle a full (chunk wide) stripe as a single unit.
 - RAID6 can now perform read-modify-write cycles which should
   help performance on larger arrays: 6 or more devices.
 - RAID5/6 stripe cache now grows and shrinks dynamically.  The value
   set is used as a minimum.
 - Resync is now allowed to go a little faster than the 'mininum' when
   there is competing IO.  How much faster depends on the speed of the
   devices, so the effective minimum should scale with device speed to
   some extent.
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Merge tag 'md/4.1' of git://neil.brown.name/md

Pull md updates from Neil Brown:
 "More updates that usual this time.  A few have performance impacts
  which hould mostly be positive, but RAID5 (in particular) can be very
  work-load ensitive...  We'll have to wait and see.

  Highlights:

   - "experimental" code for managing md/raid1 across a cluster using
     DLM.  Code is not ready for general use and triggers a WARNING if
     used.  However it is looking good and mostly done and having in
     mainline will help co-ordinate development.

   - RAID5/6 can now batch multiple (4K wide) stripe_heads so as to
     handle a full (chunk wide) stripe as a single unit.

   - RAID6 can now perform read-modify-write cycles which should help
     performance on larger arrays: 6 or more devices.

   - RAID5/6 stripe cache now grows and shrinks dynamically.  The value
     set is used as a minimum.

   - Resync is now allowed to go a little faster than the 'mininum' when
     there is competing IO.  How much faster depends on the speed of the
     devices, so the effective minimum should scale with device speed to
     some extent"

* tag 'md/4.1' of git://neil.brown.name/md: (58 commits)
  md/raid5: don't do chunk aligned read on degraded array.
  md/raid5: allow the stripe_cache to grow and shrink.
  md/raid5: change ->inactive_blocked to a bit-flag.
  md/raid5: move max_nr_stripes management into grow_one_stripe and drop_one_stripe
  md/raid5: pass gfp_t arg to grow_one_stripe()
  md/raid5: introduce configuration option rmw_level
  md/raid5: activate raid6 rmw feature
  md/raid6 algorithms: xor_syndrome() for SSE2
  md/raid6 algorithms: xor_syndrome() for generic int
  md/raid6 algorithms: improve test program
  md/raid6 algorithms: delta syndrome functions
  raid5: handle expansion/resync case with stripe batching
  raid5: handle io error of batch list
  RAID5: batch adjacent full stripe write
  raid5: track overwrite disk count
  raid5: add a new flag to track if a stripe can be batched
  raid5: use flex_array for scribble data
  md raid0: access mddev->queue (request queue member) conditionally because it is not set when accessed from dm-raid
  md: allow resync to go faster when there is competing IO.
  md: remove 'go_faster' option from ->sync_request()
  ...
2015-04-24 09:28:01 -07:00
Herbert Xu 1ce3311580 crypto: testmgr - Include crypto/aead.h
All users of AEAD should include crypto/aead.h instead of
include/linux/crypto.h.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: David S. Miller <davem@davemloft.net>
2015-04-23 14:18:11 +08:00
Herbert Xu 1ce5a04d9f crypto: tcrypt - Include crypto/aead.h
All users of AEAD should include crypto/aead.h instead of
include/linux/crypto.h.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: David S. Miller <davem@davemloft.net>
2015-04-23 14:18:11 +08:00
Herbert Xu 89081da51d crypto: algif_aead - Include crypto/aead.h
All users of AEAD should include crypto/aead.h instead of
include/linux/crypto.h.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: David S. Miller <davem@davemloft.net>
2015-04-23 14:18:10 +08:00
Herbert Xu 7be58b1250 crypto: api - Remove linux/fips.h from internal.h
Now that all fips_enabled users are including linux/fips.h directly
instead of getting it through internal.h, we can remove the fips.h
inclusions from internal.h.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-23 14:18:10 +08:00
Herbert Xu 1c41b88249 crypto: testmgr - Include linux/fips.h for fips_enabled
All users of fips_enabled should include linux/fips.h directly
instead of getting it through internal.h.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-23 14:18:10 +08:00
Herbert Xu daf0944cfb crypto: tcrypt - Include linux/fips.h for fips_enabled
All users of fips_enabled should include linux/fips.h directly
instead of getting it through internal.h which is reserved for
internal crypto API implementors.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-23 14:18:09 +08:00
Herbert Xu 94072cb20e crypto: fips - Move fips_enabled sysctl into fips.c
There is currently a large ifdef FIPS code section in proc.c.
Ostensibly it's there because the fips_enabled sysctl sits under
/proc/sys/crypto.  However, no other crypto sysctls exist.

In fact, the whole ethos of the crypto API is against such user
interfaces so this patch moves all the FIPS sysctl code over to
fips.c.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-23 14:18:09 +08:00
Herbert Xu 76450f93f1 crypto: fips - Remove bogus inclusion of internal.h
The header file internal.h is only meant for internal crypto API
implementors such as rng.c.  So fips has no business in including
it.

This patch removes that inclusions and instead adds inclusions of
the actual features used by fips.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-23 14:18:08 +08:00
Herbert Xu 3133d76fc6 crypto: api - Include linux/fips.h
All users of fips_enabled should include linux/fips.h directly
instead of getting it through internal.h.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-23 14:18:08 +08:00
Herbert Xu b94e7dc581 crypto: drbg - Remove FIPS ifdef from drbg_healthcheck_sanity
This patch removes the unnecessary CRYPTO_FIPS ifdef from
drbg_healthcheck_sanity so that the code always gets checked
by the compiler.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Stephan Mueller <smueller@chronox.de>
2015-04-23 14:18:07 +08:00
Herbert Xu 59afdc7b32 crypto: api - Move module sig ifdef into accessor function
Currently we're hiding mod->sig_ok under an ifdef in open code.
This patch adds a module_sig_ok accessor function and removes that
ifdef.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
2015-04-23 14:18:07 +08:00
Herbert Xu 43a9607d86 crypto: tcrypt - Handle async return from crypto_ahash_init
The function crypto_ahash_init can also be asynchronous just
like update and final.  So all callers must be able to handle
an async return.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-23 14:18:05 +08:00
Herbert Xu b617b702da crypto: rng - Zero seed in crypto_rng_reset
If we allocate a seed on behalf ot the user in crypto_rng_reset,
we must ensure that it is zeroed afterwards or the RNG may be
compromised.

Reported-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-22 09:30:21 +08:00
Herbert Xu 654ae152b3 crypto: algif_rng - Remove obsolete const-removal cast
Now that crypto_rng_reset takes a const argument, we no longer
need to cast away the const qualifier.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-04-22 09:30:21 +08:00