Commit Graph

10 Commits

Author SHA1 Message Date
Eric Biggers c4741b2305 crypto: run initcalls for generic implementations earlier
Use subsys_initcall for registration of all templates and generic
algorithm implementations, rather than module_init.  Then change
cryptomgr to use arch_initcall, to place it before the subsys_initcalls.

This is needed so that when both a generic and optimized implementation
of an algorithm are built into the kernel (not loadable modules), the
generic implementation is registered before the optimized one.
Otherwise, the self-tests for the optimized implementation are unable to
allocate the generic implementation for the new comparison fuzz tests.

Note that on arm, a side effect of this change is that self-tests for
generic implementations may run before the unaligned access handler has
been installed.  So, unaligned accesses will crash the kernel.  This is
arguably a good thing as it makes it easier to detect that type of bug.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-04-18 22:15:03 +08:00
Kees Cook 5d26a105b5 crypto: prefix module autoloading with "crypto-"
This prefixes all crypto module loading with "crypto-" so we never run
the risk of exposing module auto-loading to userspace via a crypto API,
as demonstrated by Mathias Krause:

https://lkml.org/lkml/2013/3/4/70

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-11-24 22:43:57 +08:00
Jan-Simon Möller 06e710bd5f crypto: fcrypt - Fix bitoperation for compilation with clang
v2: Fix bug in statement as pointed out by Herbert Xu. Kudos to pipacs.

Author:  PaX Team <pageexec at freemail.hu>
ML-Post: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120507/142707.html
URL:     http://llvm.linuxfoundation.org

Merge:   Jan-Simon Möller <dl9pf at gmx.de>

Description:

Fix for warning:
linux/crypto/fcrypt.c:143:47: warning: signed shift result (0x598000000) requires 36 bits to
      represent, but 'int' only has 32 bits [-Wshift-overflow]
        Z(0xef), Z(0x70), Z(0xcf), Z(0xc2), Z(0x2a), Z(0xb3), Z(0x61), Z(0xad),
                                                     ^~~~~~~
linux/crypto/fcrypt.c:113:29: note: expanded from macro 'Z'
                            ^  ~~
linux/include/uapi/linux/byteorder/little_endian.h:38:53: note: expanded from macro
      '__cpu_to_be32'
                                                    ^
linux/include/uapi/linux/swab.h:116:21: note: expanded from macro '__swab32'
        ___constant_swab32(x) :                 \
                           ^
linux/include/uapi/linux/swab.h:18:12: note: expanded from macro '___constant_swab32'
        (((__u32)(x) & (__u32)0x0000ff00UL) <<  8) |            \
                  ^

Solution - make sure we don't exceed the 32 bit range.
 #define Z(x) cpu_to_be32(((x & 0x1f) << 27) | (x >> 5))

Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de>
CC: pageexec@freemail.hu
CC: llvmlinux@lists.linuxfoundation.org
CC: behanw@converseincode.com
CC: herbert@gondor.apana.org.au
CC: davem@davemloft.net
CC: linux-crypto@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-02 20:32:58 +10:00
Jussi Kivilinna 77ec2e734d crypto: cleanup - remove unneeded crypto_alg.cra_list initializations
Initialization of cra_list is currently mixed, most ciphers initialize this
field and most shashes do not. Initialization however is not needed at all
since cra_list is initialized/overwritten in __crypto_register_alg() with
list_add(). Therefore perform cleanup to remove all unneeded initializations
of this field in 'crypto/'.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-08-01 17:47:27 +08:00
Richard Hartmann 0047e81dc3 crypto: fcrypt - Fix checkpatch errors
Signed-off-by: Richard Hartmann <richih.mailinglist@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2010-02-16 20:34:07 +08:00
Harvey Harrison dad3df2044 crypto: remove uses of __constant_{endian} helpers
Base versions handle constant folding just fine.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-12-25 11:02:03 +11:00
Kamalesh Babulal 3af5b90bde [CRYPTO] all: Clean up init()/fini()
On Thu, Mar 27, 2008 at 03:40:36PM +0100, Bodo Eggert wrote:
> Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
> 
> > This patch cleanups the crypto code, replaces the init() and fini()
> > with the <algorithm name>_init/_fini
> 
> This part ist OK.
> 
> > or init/fini_<algorithm name> (if the 
> > <algorithm name>_init/_fini exist)
> 
> Having init_foo and foo_init won't be a good thing, will it? I'd start
> confusing them.
> 
> What about foo_modinit instead?

Thanks for the suggestion, the init() is replaced with

	<algorithm name>_mod_init ()

and fini () is replaced with <algorithm name>_mod_fini.
 
Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-04-21 10:19:34 +08:00
Al Viro 3c50b3683a fcrypt endianness misannotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05 09:25:20 -08:00
John Anthony Kazos Jr 991d17403c crypto: convert "crypto" subdirectory to UTF-8
Convert the subdirectory "crypto" to UTF-8. The files changed are
<crypto/fcrypt.c> and <crypto/api.c>.

Signed-off-by: John Anthony Kazos Jr. <jakj@j-a-k-j.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
2007-10-19 23:06:17 +02:00
David Howells 90831639a6 [CRYPTO] fcrypt: Add FCrypt from RxRPC
Add a crypto module to provide FCrypt encryption as used by RxRPC.

Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2007-02-07 09:20:59 +11:00