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* [CRYPTO] tcrypt: Fix error checking for comp allocationSebastian Siewior2007-03-20
| | | | | | | | This patch fixes loading the tcrypt module while deflate isn't available at all (isn't build). Signed-off-by: Sebastian Siewior <linux-crypto@ml.breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: scatterwalk_copychunks() fails to advance through scatterlistJ. Bruce Fields2007-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the loop in scatterwalk_copychunks(), if walk->offset is zero, then scatterwalk_pagedone rounds that up to the nearest page boundary: walk->offset += PAGE_SIZE - 1; walk->offset &= PAGE_MASK; which is a no-op in this case, so we don't advance to the next element of the scatterlist array: if (walk->offset >= walk->sg->offset + walk->sg->length) scatterwalk_start(walk, sg_next(walk->sg)); and we end up copying the same data twice. It appears that other callers of scatterwalk_{page}done first advance walk->offset, so I believe that's the correct thing to do here. This caused a bug in NFS when run with krb5p security, which would cause some writes to fail with permissions errors--for example, writes of less than 8 bytes (the des blocksize) at the start of a file. A git-bisect shows the bug was originally introduced by 5c64097aa0f6dc4f27718ef47ca9a12538d62860, first in 2.6.19-rc1. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [PATCH] mark struct file_operations const 3Arjan van de Ven2007-02-12
| | | | | | | | | | | Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'HEAD' of ↵David S. Miller2007-02-08
|\ | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6 Conflicts: crypto/Kconfig
| * [CRYPTO] camellia: added the testing code of Camellia cipherNoriaki TAKAMIYA2007-02-06
| | | | | | | | | | | | | | This patch adds the code of Camellia code for testing module. Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * [CRYPTO] camellia: added the code of Camellia cipher algorithm.Noriaki TAKAMIYA2007-02-06
| | | | | | | | | | | | | | This patch adds the main code of Camellia cipher algorithm. Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * [CRYPTO] camellia: Add Kconfig entry.Noriaki TAKAMIYA2007-02-06
| | | | | | | | | | | | | | This patch adds the Kconfig entry for Camellia. Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * [CRYPTO] xcbc: Use new cipher interfaceHerbert Xu2007-02-06
| | | | | | | | | | | | This patch changes xcbc to use the new cipher encryt_one interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * [CRYPTO] api: Allow multiple frontends per backendHerbert Xu2007-02-06
| | | | | | | | | | | | | | | | This patch adds support for multiple frontend types for each backend algorithm by passing the type and mask through to the backend type init function. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * [CRYPTO] api: Add type-safe spawnsHerbert Xu2007-02-06
| | | | | | | | | | | | This patch allows spawns of specific types (e.g., cipher) to be allocated. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * [CRYPTO] api: Remove deprecated interfaceHerbert Xu2007-02-06
| | | | | | | | | | | | This patch removes the old cipher interface and related code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * [CRYPTO] tcrypt: Removed vestigial crypto_alloc_tfm callHerbert Xu2007-02-06
| | | | | | | | | | | | | | The crypto_comp conversion missed the last remaining crypto_alloc_tfm call. This patch replaces it with crypto_alloc_comp. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * [CRYPTO] fcrypt: Add FCrypt from RxRPCDavid Howells2007-02-06
| | | | | | | | | | | | | | 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>
| * [CRYPTO] pcbc: Add Propagated CBC templateDavid Howells2007-02-06
| | | | | | | | | | | | | | Add PCBC crypto template support as used by RxRPC. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * [CRYPTO] tcrypt: Added test vectors for sha384/sha512Andrew Donofrio2007-02-06
| | | | | | | | | | | | | | | | | | This patch adds tests for SHA384 HMAC and SHA512 HMAC to the tcrypt module. Test data was taken from RFC4231. This patch is a follow-up to the discovery (bug 7646) that the kernel SHA384 HMAC implementation was not generating proper SHA384 HMACs. Signed-off-by: Andrew Donofrio <linuxbugzilla@kriptik.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * [CRYPTO] all: Check for usage in hard IRQ contextHerbert Xu2007-02-06
| | | | | | | | | | | | | | | | | | | | Using blkcipher/hash crypto operations in hard IRQ context can lead to random memory corruption due to the reuse of kmap_atomic slots. Since crypto operations were never meant to be used in hard IRQ contexts, this patch checks for such usage and returns an error before kmap_atomic is performed. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | [S390] move crypto options and some cleanup.Jan Glauber2007-02-05
|/ | | | | | | | | | | | This patch moves the config options for the s390 crypto instructions to the standard "Hardware crypto devices" menu. In addition some cleanup has been done: use a flag for supported keylengths, add a warning about machien limitation, return ENOTSUPP in case the hardware has no support, remove superfluous printks and update email addresses. Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [PATCH] uml problems with linux/io.hAl Viro2006-12-13
| | | | | | | | | | Remove useless includes of linux/io.h, don't even try to build iomap_copy on uml (it doesn't have readb() et.al., so...) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [CRYPTO] sha512: Fix sha384 block sizeHerbert Xu2006-12-11
| | | | | | | | | | The SHA384 block size should be 128 bytes, not 96 bytes. This was spotted by Andrew Donofrio. Fortunately the block size isn't actually used anywhere so this typo has had no real impact. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] lrw: round --> lrw_roundDavid S. Miller2006-12-06
| | | | | | | | Fixes: crypto/lrw.c:99: warning: conflicting types for built-in function ‘round’ Signed-off-by: David S. Miller <davem@davemloft.net>
* [CRYPTO] tcrypt: LRW test vectorsRik Snel2006-12-06
| | | | | | | | | | | | Do modprobe tcrypt mode=10 to check the included test vectors, they are from: http://grouper.ieee.org/groups/1619/email/pdf00017.pdf and from http://www.mail-archive.com/stds-p1619@listserv.ieee.org/msg00173.html. To make the last test vector fit, I had to increase the buffer size of input and result to 512 bytes. Signed-off-by: Rik Snel <rsnel@cube.dyndns.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] lrw: Liskov Rivest Wagner, a tweakable narrow block cipher modeRik Snel2006-12-06
| | | | | | | | | | | | | | | | | | Main module, this implements the Liskov Rivest Wagner block cipher mode in the new blockcipher API. The implementation is based on ecb.c. The LRW-32-AES specification I used can be found at: http://grouper.ieee.org/groups/1619/email/pdf00017.pdf It implements the optimization specified as optional in the specification, and in addition it uses optimized multiplication routines from gf128mul.c. Since gf128mul.[ch] is not tested on bigendian, this cipher mode may currently fail badly on bigendian machines. Signed-off-by: Rik Snel <rsnel@cube.dyndns.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] lib: table driven multiplications in GF(2^128)Rik Snel2006-12-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A lot of cypher modes need multiplications in GF(2^128). LRW, ABL, GCM... I use functions from this library in my LRW implementation and I will also use them in my ABL (Arbitrary Block Length, an unencumbered (correct me if I am wrong, wide block cipher mode). Elements of GF(2^128) must be presented as u128 *, it encourages automatic and proper alignment. The library contains support for two different representations of GF(2^128), see the comment in gf128mul.h. There different levels of optimization (memory/speed tradeoff). The code is based on work by Dr Brian Gladman. Notable changes: - deletion of two optimization modes - change from u32 to u64 for faster handling on 64bit machines - support for 'bbe' representation in addition to the, already implemented, 'lle' representation. - move 'inline void' functions from header to 'static void' in the source file - update to use the linux coding style conventions The original can be found at: http://fp.gladman.plus.com/AES/modes.vc8.19-06-06.zip The copyright (and GPL statement) of the original author is preserved. Signed-off-by: Rik Snel <rsnel@cube.dyndns.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: Remove unused functionsAdrian Bunk2006-12-06
| | | | | | | | | | | | This patch removes the following no longer used functions: - api.c: crypto_alg_available() - digest.c: crypto_digest_init() - digest.c: crypto_digest_update() - digest.c: crypto_digest_final() - digest.c: crypto_digest_digest() Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] xcbc: Make needlessly global code staticAdrian Bunk2006-12-06
| | | | | | | | | | | | | | | | On Tue, Nov 14, 2006 at 01:41:25AM -0800, Andrew Morton wrote: >... > Changes since 2.6.19-rc5-mm2: >... > git-cryptodev.patch >... > git trees >... This patch makes some needlessly global code static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] tcrypt: Add test vectors of AES_XCBCKazunori MIYAZAWA2006-12-06
| | | | | | | est vectors of XCBC with AES-128. Signed-off-by: Kazunori MIYAZAWA <miyazawa@linux-ipv6.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] xcbc: New algorithmKazunori MIYAZAWA2006-12-06
| | | | | | | | | | | This is core code of XCBC. XCBC is an algorithm that forms a MAC algorithm out of a cipher algorithm. For example, AES-XCBC-MAC is a MAC algorithm based on the AES cipher algorithm. Signed-off-by: Kazunori MIYAZAWA <miyazawa@linux-ipv6.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* WorkStruct: Pass the work_struct pointer instead of context dataDavid Howells2006-11-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pass the work_struct pointer to the work function rather than context data. The work function can use container_of() to work out the data. For the cases where the container of the work_struct may go away the moment the pending bit is cleared, it is made possible to defer the release of the structure by deferring the clearing of the pending bit. To make this work, an extra flag is introduced into the management side of the work_struct. This governs auto-release of the structure upon execution. Ordinarily, the work queue executor would release the work_struct for further scheduling or deallocation by clearing the pending bit prior to jumping to the work function. This means that, unless the driver makes some guarantee itself that the work_struct won't go away, the work function may not access anything else in the work_struct or its container lest they be deallocated.. This is a problem if the auxiliary data is taken away (as done by the last patch). However, if the pending bit is *not* cleared before jumping to the work function, then the work function *may* access the work_struct and its container with no problems. But then the work function must itself release the work_struct by calling work_release(). In most cases, automatic release is fine, so this is the default. Special initiators exist for the non-auto-release case (ending in _NAR). Signed-Off-By: David Howells <dhowells@redhat.com>
* [CRYPTO] api: Select cryptomgr where neededHerbert Xu2006-10-16
| | | | | | | | Since cryptomgr is the only way to construct algorithm instances for now it makes sense to let the templates depend on it as otherwise it may be left off inadvertently. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: fix crypto_alloc_base() return valueAkinobu Mita2006-10-11
| | | | | | | | | | | | | | | This patch makes crypto_alloc_base() return proper return value. - If kzalloc() failure happens within __crypto_alloc_tfm(), crypto_alloc_base() returns NULL. But crypto_alloc_base() is supposed to return error code as pointer. So this patch makes it return -ENOMEM in that case. - crypto_alloc_base() is suppose to return -EINTR, if it is interrupted by signal. But it may not return -EINTR. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [PATCH] serpent: fix endian warningsAlexey Dobriyan2006-10-10
| | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [CRYPTO] hmac: Fix error truncation by unlikely()Herbert Xu2006-09-23
| | | | | | | | The error return values are truncated by unlikely so we need to save it first. Thanks to Kyle Moffett for spotting this. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [CRYPTO] hmac: Fix hmac_init update callHerbert Xu2006-09-23
| | | | | | | | | | | The crypto_hash_update call in hmac_init gave the number 1 instead of the length of the sg list in bytes. This is a missed conversion from the digest => hash change. As tcrypt only tests crypto_hash_digest it didn't catch this. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [CRYPTO] users: Use crypto_comp and crypto_has_*Herbert Xu2006-09-20
| | | | | | | This patch converts all users to use the new crypto_comp type and the crypto_has_* functions. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: Add crypto_comp and crypto_has_*Herbert Xu2006-09-20
| | | | | | | | This patch adds the crypto_comp type to complete the compile-time checking conversion. The functions crypto_has_alg and crypto_has_cipher, etc. are also added to replace crypto_alg_available. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] digest: Remove old HMAC implementationHerbert Xu2006-09-20
| | | | | | | | This patch removes the old HMAC implementation now that nobody uses it anymore. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CRYPTO] tcrypt: Use HMAC template and hash interfaceHerbert Xu2006-09-20
| | | | | | | | | This patch converts tcrypt to use the new HMAC template rather than the hard-coded version of HMAC. It also converts all digest users to use the new cipher interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CRYPTO] hmac: Add crypto template implementationHerbert Xu2006-09-20
| | | | | | | | | | | | | This patch rewrites HMAC as a crypto template. This means that HMAC is no longer a hard-coded part of the API. It's now a template that generates standard digest algorithms like any other. The old HMAC is preserved until all current users are converted. The same structure can be used by other MACs such as AES-XCBC-MAC. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CRYPTO] digest: Added user API for new hash typeHerbert Xu2006-09-20
| | | | | | | | | | | | | | | | | The existing digest user interface is inadequate for support asynchronous operations. For one it doesn't return a value to indicate success or failure, nor does it take a per-operation descriptor which is essential for the issuing of requests while other requests are still outstanding. This patch is the first in a series of steps to remodel the interface for asynchronous operations. For the ease of transition the new interface will be known as "hash" while the old one will remain as "digest". This patch also changes sg_next to allow chaining. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: Mark parts of cipher interface as deprecatedHerbert Xu2006-09-20
| | | | | | | | Mark the parts of the cipher interface that have been replaced by block ciphers as deprecated. Thanks to Andrew Morton for suggesting doing this before removing them completely. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] tcrypt: Use block ciphers where applicableHerbert Xu2006-09-20
| | | | | | | This patch converts tcrypt to use the new block cipher type where applicable. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] s390: Added block cipher versions of CBC/ECBHerbert Xu2006-09-20
| | | | | | | | This patch adds block cipher algorithms for S390. Once all users of the old cipher type have been converted the existing CBC/ECB non-block cipher operations will be removed. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] cipher: Added block ciphers for CBC/ECBHerbert Xu2006-09-20
| | | | | | | | | | | | 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>
* [CRYPTO] cipher: Added block cipher typeHerbert Xu2006-09-20
| | | | | | | | | | | | | | | | | | | This patch adds the new type of block ciphers. Unlike current cipher algorithms which operate on a single block at a time, block ciphers operate on an arbitrarily long linear area of data. As it is block-based, it will skip any data remaining at the end which cannot form a block. The block cipher has one major difference when compared to the existing block cipher implementation. The sg walking is now performed by the algorithm rather than the cipher mid-layer. This is needed for drivers that directly support sg lists. It also improves performance for all algorithms as it reduces the total number of indirect calls by one. In future the existing cipher algorithm will be converted to only have a single-block interface. This will be done after all existing users have switched over to the new block cipher type. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] scatterwalk: Prepare for block ciphersHerbert Xu2006-09-20
| | | | | | | | | | | | | | | | | | | | | This patch prepares the scatterwalk code for use by the new block cipher type. Firstly it halves the size of scatter_walk on 32-bit platforms. This is important as we allocate at least two of these objects on the stack for each block cipher operation. It also exports the symbols since the block cipher code can be built as a module. Finally there is a hack in scatterwalk_unmap that relies on progress being made. Unfortunately, for hardware crypto we can't guarantee progress to be made since the hardware can fail. So this also gets rid of the hack by not advancing the address returned by scatterwalk_map. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] cipher: Added encrypt_one/decrypt_oneHerbert Xu2006-09-20
| | | | | | | | | | | | This patch adds two new operations for the simple cipher that encrypts or decrypts a single block at a time. This will be the main interface after the existing block operations have moved over to the new block ciphers. It also adds the crypto_cipher type which is currently only used on the new operations but will be extended to setkey as well once existing users have been converted to use block ciphers where applicable. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: Added crypto_type supportHerbert Xu2006-09-20
| | | | | | | | | | | This patch adds the crypto_type structure which will be used for all new crypto algorithm types, beginning with block ciphers. The primary purpose of this abstraction is to allow different crypto_type objects for crypto algorithms of the same type, in particular, there will be a different crypto_type objects for asynchronous algorithms. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: Feed flag directly to crypto_yieldHerbert Xu2006-09-20
| | | | | | | | | The sleeping flag used to determine whether crypto_yield can actually yield is really a per-operation flag rather than a per-tfm flag. This patch changes crypto_yield to take a flag directly so that we can start using a per-operation flag instead the tfm flag. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: Added crypto_alloc_baseHerbert Xu2006-09-20
| | | | | | | | | | | | | | | | | | | | | | | | Up until now all crypto transforms have been of the same type, struct crypto_tfm, regardless of whether they are ciphers, digests, or other types. As a result of that, we check the types at run-time before each crypto operation. This is rather cumbersome. We could instead use different C types for each crypto type to ensure that the correct types are used at compile time. That is, we would have crypto_cipher/crypto_digest instead of just crypto_tfm. The appropriate type would then be required for the actual operations such as crypto_digest_digest. Now that we have the type/mask fields when looking up algorithms, it is easy to request for an algorithm of the precise type that the user wants. However, crypto_alloc_tfm currently does not expose these new attributes. This patch introduces the function crypto_alloc_base which will carry these new parameters. It will be renamed to crypto_alloc_tfm once all existing users have been converted. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [CRYPTO] api: Added asynchronous flagHerbert Xu2006-09-20
| | | | | | | This patch adds the asynchronous flag and changes all existing users to only look up algorithms that are synchronous. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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