summaryrefslogtreecommitdiffstats
path: root/include/linux/crypto.h
Commit message (Collapse)AuthorAgeFilesLines
* Merge tag 'docs-4.10-2' of git://git.lwn.net/linuxLinus Torvalds2016-12-171-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull more documentation updates from Jonathan Corbet: "This converts the crypto DocBook to Sphinx" * tag 'docs-4.10-2' of git://git.lwn.net/linux: crypto: doc - optimize compilation crypto: doc - clarify AEAD memory structure crypto: doc - remove crypto_alloc_ablkcipher crypto: doc - add KPP documentation crypto: doc - fix separation of cipher / req API crypto: doc - fix source comments for Sphinx crypto: doc - remove crypto API DocBook crypto: doc - convert crypto API documentation to Sphinx
| * crypto: doc - fix source comments for SphinxStephan Mueller2016-12-131-2/+2
| | | | | | | | | | | | | | Update comments to avoid any complaints from Sphinx during compilation. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | crypto: api - fix comment typoBaruch Siach2016-12-011-1/+1
| | | | | | | | | | Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | crypto: acomp - add driver-side scomp interfaceGiovanni Cabiddu2016-10-251-0/+2
| | | | | | | | | | | | | | | | Add a synchronous back-end (scomp) to acomp. This allows to easily expose the already present compression algorithms in LKCF via acomp. Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | crypto: acomp - add asynchronous compression apiGiovanni Cabiddu2016-10-251-0/+1
|/ | | | | | | | Add acomp, an asynchronous compression api that uses scatterlist buffers. Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: skcipher - Remove top-level givcipher interfaceHerbert Xu2016-07-181-19/+0
| | | | | | | | | | | | | | This patch removes the old crypto_grab_skcipher helper and replaces it with crypto_grab_skcipher2. As this is the final entry point into givcipher this patch also removes all traces of the top-level givcipher interface, including all implicit IV generators such as chainiv. The bottom-level givcipher interface remains until the drivers using it are converted. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: skcipher - Add low-level skcipher interfaceHerbert Xu2016-07-181-0/+1
| | | | | | | | | | | | | | | | | | This patch allows skcipher algorithms and instances to be created and registered with the crypto API. They are accessible through the top-level skcipher interface, along with ablkcipher/blkcipher algorithms and instances. This patch also introduces a new parameter called chunk size which is meant for ciphers such as CTR and CTS which ostensibly can handle arbitrary lengths, but still behave like block ciphers in that you can only process a partial block at the very end. For these ciphers the block size will continue to be set to 1 as it is now while the chunk size will be set to the underlying block size. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: kpp - Key-agreement Protocol Primitives API (KPP)Salvatore Benedetto2016-06-231-0/+1
| | | | | | | | | | | | | | | | | | | Add key-agreement protocol primitives (kpp) API which allows to implement primitives required by protocols such as DH and ECDH. The API is composed mainly by the following functions * set_secret() - It allows the user to set his secret, also referred to as his private key, along with the parameters known to both parties involved in the key-agreement session. * generate_public_key() - It generates the public key to be sent to the other counterpart involved in the key-agreement session. The function has to be called after set_params() and set_secret() * generate_secret() - It generates the shared secret for the session Other functions such as init() and exit() are provided for allowing cryptographic hardware to be inizialized properly before use Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: hash - shrink hash down to two typesGiovanni Cabiddu2016-06-071-5/+5
| | | | | | | Move hash to 0xe to free up the space for acomp/scomp Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - document correct return value for request allocationEric Biggers2016-04-151-2/+1
| | | | | Signed-off-by: Eric Biggers <ebiggers3@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: hash - Remove crypto_hash interfaceHerbert Xu2016-02-061-251/+0
| | | | | | | This patch removes all traces of the crypto_hash interface, now that everyone has switched over to shash or ahash. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: compress - remove unused pcomp interfaceJoonsoo Kim2016-01-271-1/+0
| | | | | | | It is unused now, so remove it. Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: aead - Remove CRYPTO_ALG_AEAD_NEW flagHerbert Xu2015-08-171-6/+0
| | | | | | | This patch removes the CRYPTO_ALG_AEAD_NEW flag now that everyone has been converted. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: aead - Remove old AEAD interfacesHerbert Xu2015-08-171-47/+1
| | | | | | | Now that the AEAD conversion is complete we can rip out the old AEAD interafce and associated code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: algif_aead - Temporarily disable all AEAD algorithmsHerbert Xu2015-06-221-0/+6
| | | | | | | | | | | | | As the AEAD conversion is still ongoing, we do not yet wish to export legacy AEAD implementations to user-space, as their calling convention will change. This patch actually disables all AEAD algorithms because some of them (e.g., cryptd) will need to be modified to propagate this flag. Subsequent patches will reenable them on an individual basis. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: api - Add CRYPTO_MINALIGN_ATTR to struct crypto_algHerbert Xu2015-06-191-1/+1
| | | | | | | | | | | | | | The struct crypto_alg is embedded into various type-specific structs such as aead_alg. This is then used as part of instances such as struct aead_instance. It is also embedded into the generic struct crypto_instance. In order to ensure that struct aead_instance can be converted to struct crypto_instance when necessary, we need to ensure that crypto_alg is aligned properly. This patch adds an alignment attribute to struct crypto_alg to ensure this. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: akcipher - add PKE APITadeusz Struk2015-06-171-0/+1
| | | | | | | | | | Add Public Key Encryption API. Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Made CRYPTO_AKCIPHER invisible like other type config options. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - Fix typo in crypto-API.xmlMasanari Iida2015-06-041-1/+1
| | | | | | | | | | This patch fix some typos found in crypto-API.xml. It is because the file is generated from comments in sources, so I had to fix typo in sources. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: aead - Rename aead_alg to old_aead_algHerbert Xu2015-05-221-3/+3
| | | | | | | | | | | 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>
* crypto: aead - Convert top level interface to new styleHerbert Xu2015-05-131-441/+1
| | | | | | | | | | | | | | | 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>
* crypto: rng - Remove old low-level rng interfaceHerbert Xu2015-04-221-30/+0
| | | | | | | Now that all rng implementations have switched over to the new interface, we can remove the old low-level interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: rng - Convert low-level crypto_rng to new styleHerbert Xu2015-04-221-3/+3
| | | | | | | | | | | This patch converts the low-level crypto_rng interface to the "new" style. This allows existing implementations to be converted over one- by-one. Once that is complete we can then remove the old rng interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: rng - Convert crypto_rng to new style crypto_typeHerbert Xu2015-04-211-12/+0
| | | | | | | | | | | | | This patch converts the top-level crypto_rng to the "new" style. It was the last algorithm type added before we switched over to the new way of doing things exemplified by shash. All users will automatically switch over to the new interface. Note that this patch does not touch the low-level interface to rng implementations. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: api - prevent helper ciphers from being usedStephan Mueller2015-03-311-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Several hardware related cipher implementations are implemented as follows: a "helper" cipher implementation is registered with the kernel crypto API. Such helper ciphers are never intended to be called by normal users. In some cases, calling them via the normal crypto API may even cause failures including kernel crashes. In a normal case, the "wrapping" ciphers that use the helpers ensure that these helpers are invoked such that they cannot cause any calamity. Considering the AF_ALG user space interface, unprivileged users can call all ciphers registered with the crypto API, including these helper ciphers that are not intended to be called directly. That means, with AF_ALG user space may invoke these helper ciphers and may cause undefined states or side effects. To avoid any potential side effects with such helpers, the patch prevents the helpers to be called directly. A new cipher type flag is added: CRYPTO_ALG_INTERNAL. This flag shall be used to mark helper ciphers. These ciphers can only be used if the caller invoke the cipher with CRYPTO_ALG_INTERNAL in the type and mask field. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - remove colons in commentsStephan Mueller2015-01-201-4/+4
| | | | | | | | | | | | | As documented in Documentation/kernel-doc-nano-HOWTO.txt lines terminated with a colon are treated as headings. The current layout of the documentation when compiling the kernel crypto API DocBook documentation is messed up by by treating some lines as headings. The patch removes colons from comments that shall not be treated as headings. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: aead - add check for presence of auth tagStephan Mueller2015-01-081-0/+3
| | | | | | | | | The AEAD decryption operation requires the authentication tag to be present as part of the cipher text buffer. The added check verifies that the caller provides a cipher text with at least the authentication tag. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: prefix module autoloading with "crypto-"Kees Cook2014-11-241-0/+13
| | | | | | | | | | | 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>
* crypto: doc - HASH API documentationStephan Mueller2014-11-131-0/+119
| | | | | | | | The API function calls exported by the kernel crypto API for message digests to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - CIPHER API documentationStephan Mueller2014-11-131-0/+89
| | | | | | | | The API function calls exported by the kernel crypto API for signle block ciphers to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - BLKCIPHER API documentationStephan Mueller2014-11-131-0/+188
| | | | | | | | The API function calls exported by the kernel crypto API for synchronous block ciphers to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - AEAD API documentationStephan Mueller2014-11-131-0/+251
| | | | | | | | The API function calls exported by the kernel crypto API for AEAD ciphers to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - ABLKCIPHER API documentationStephan Mueller2014-11-131-0/+206
| | | | | | | | The API function calls exported by the kernel crypto API for asynchronous block ciphers to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - cipher data structuresStephan Mueller2014-11-131-3/+243
| | | | | | | | | | The data structure of struct crypto_alg together with various other data structures needed by cipher developers is documented wit all parameters that can be set by a developer of a transformation. All parameters that are internal to the crypto API are marked as such. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: Resolve shadow warningsMark Rustad2014-08-011-4/+4
| | | | | | | | | Change formal parameters to not clash with global names to eliminate many W=2 warnings. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* Merge tag 'bug-for-3.4' of ↵Linus Torvalds2012-03-241-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux Pull <linux/bug.h> cleanup from Paul Gortmaker: "The changes shown here are to unify linux's BUG support under the one <linux/bug.h> file. Due to historical reasons, we have some BUG code in bug.h and some in kernel.h -- i.e. the support for BUILD_BUG in linux/kernel.h predates the addition of linux/bug.h, but old code in kernel.h wasn't moved to bug.h at that time. As a band-aid, kernel.h was including <asm/bug.h> to pseudo link them. This has caused confusion[1] and general yuck/WTF[2] reactions. Here is an example that violates the principle of least surprise: CC lib/string.o lib/string.c: In function 'strlcat': lib/string.c:225:2: error: implicit declaration of function 'BUILD_BUG_ON' make[2]: *** [lib/string.o] Error 1 $ $ grep linux/bug.h lib/string.c #include <linux/bug.h> $ We've included <linux/bug.h> for the BUG infrastructure and yet we still get a compile fail! [We've not kernel.h for BUILD_BUG_ON.] Ugh - very confusing for someone who is new to kernel development. With the above in mind, the goals of this changeset are: 1) find and fix any include/*.h files that were relying on the implicit presence of BUG code. 2) find and fix any C files that were consuming kernel.h and hence relying on implicitly getting some/all BUG code. 3) Move the BUG related code living in kernel.h to <linux/bug.h> 4) remove the asm/bug.h from kernel.h to finally break the chain. During development, the order was more like 3-4, build-test, 1-2. But to ensure that git history for bisect doesn't get needless build failures introduced, the commits have been reorderd to fix the problem areas in advance. [1] https://lkml.org/lkml/2012/1/3/90 [2] https://lkml.org/lkml/2012/1/17/414" Fix up conflicts (new radeon file, reiserfs header cleanups) as per Paul and linux-next. * tag 'bug-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: kernel.h: doesn't explicitly use bug.h, so don't include it. bug: consolidate BUILD_BUG_ON with other bug code BUG: headers with BUG/BUG_ON etc. need linux/bug.h bug.h: add include of it to various implicit C users lib: fix implicit users of kernel.h for TAINT_WARN spinlock: macroize assert_spin_locked to avoid bug.h dependency x86: relocate get/set debugreg fcns to include/asm/debugreg.
| * BUG: headers with BUG/BUG_ON etc. need linux/bug.hPaul Gortmaker2012-03-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | If a header file is making use of BUG, BUG_ON, BUILD_BUG_ON, or any other BUG variant in a static inline (i.e. not in a #define) then that header really should be including <linux/bug.h> and not just expecting it to be implicitly present. We can make this change risk-free, since if the files using these headers didn't have exposure to linux/bug.h already, they would have been causing compile failures/warnings. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* | crypto: Add bulk algorithm registration interfaceMark Brown2012-01-261-0/+2
| | | | | | | | | | | | | | | | | | | | Hardware crypto engines frequently need to register a selection of different algorithms with the core. Simplify their code slightly, especially the error handling, by providing functions to register a number of algorithms in a single call. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | crypto: Add CRYPTO_ALG_KERN_DRIVER_ONLY flagNikos Mavrogiannopoulos2012-01-131-0/+5
|/ | | | | | | | | | The added CRYPTO_ALG_KERN_DRIVER_ONLY indicates whether a cipher is only available via a kernel driver. If the cipher implementation might be available by using an instruction set or by porting the kernel code, then it must not be set. Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* Merge branch 'modsplit-Oct31_2011' of ↵Linus Torvalds2011-11-061-6/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux * 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits) Revert "tracing: Include module.h in define_trace.h" irq: don't put module.h into irq.h for tracking irqgen modules. bluetooth: macroize two small inlines to avoid module.h ip_vs.h: fix implicit use of module_get/module_put from module.h nf_conntrack.h: fix up fallout from implicit moduleparam.h presence include: replace linux/module.h with "struct module" wherever possible include: convert various register fcns to macros to avoid include chaining crypto.h: remove unused crypto_tfm_alg_modname() inline uwb.h: fix implicit use of asm/page.h for PAGE_SIZE pm_runtime.h: explicitly requires notifier.h linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h miscdevice.h: fix up implicit use of lists and types stop_machine.h: fix implicit use of smp.h for smp_processor_id of: fix implicit use of errno.h in include/linux/of.h of_platform.h: delete needless include <linux/module.h> acpi: remove module.h include from platform/aclinux.h miscdevice.h: delete unnecessary inclusion of module.h device_cgroup.h: delete needless include <linux/module.h> net: sch_generic remove redundant use of <linux/module.h> net: inet_timewait_sock doesnt need <linux/module.h> ... Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in - drivers/media/dvb/frontends/dibx000_common.c - drivers/media/video/{mt9m111.c,ov6650.c} - drivers/mfd/ab3550-core.c - include/linux/dmaengine.h
| * crypto.h: remove unused crypto_tfm_alg_modname() inlinePaul Gortmaker2011-10-311-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The <linux/crypto.h> (which is in turn in common headers like tcp.h) wants to use module_name() in an inline fcn. But having all of <linux/module.h> along for the ride is overkill and slows down compiles by a measureable amount, since it in turn includes lots of headers. Since the inline is never used anywhere in the kernel[1], we can just remove it, and then also remove the module.h include as well. In all the many crypto modules, there were some relying on crypto.h including module.h -- for them we now explicitly call out module.h for inclusion. [1] git grep shows some staging drivers also define the same static inline, but they also never ever use it. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* | crypto: Add a flag to identify crypto instancesSteffen Klassert2011-10-211-0/+5
|/ | | | | | | | | The upcomming crypto user configuration api needs to identify crypto instances. This patch adds a flag that is set if the algorithm is an instance that is build from templates. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* atomic: use <linux/atomic.h>Arun Sharma2011-07-261-1/+1
| | | | | | | | | | | | | | This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by: Arun Sharma <asharma@fb.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* crypto: Use ARCH_KMALLOC_MINALIGN for CRYPTO_MINALIGN now that it's exposedDavid Woodhouse2010-05-191-6/+0
| | | | | | Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
* crypto: hash - Remove cra_u.{digest,hash}Benjamin Gilbert2009-10-191-27/+0
| | | | | | | | | | Remove unused digest_alg and hash_alg structs from crypto_alg union and kill their definitions. This also ensures that old-style digest/hash algorithms maintained out of tree will break at build time rather than oopsing at runtime. Signed-off-by: Benjamin Gilbert <bgilbert@cs.cmu.edu> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: ahash - Remove old_ahash_algHerbert Xu2009-07-141-16/+0
| | | | | | | Now that all ahash implementations have been converted to the new ahash type, we can remove old_ahash_alg and its associated support. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: ahash - Convert to new style algorithmsHerbert Xu2009-07-141-26/+3
| | | | | | | | | This patch converts crypto_ahash to the new style. The old ahash algorithm type is retained until the existing ahash implementations are also converted. All ahash users will automatically get the new crypto_ahash type. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: async - Use kzfree for requestsHerbert Xu2009-07-121-2/+2
| | | | | | | | This patch changes the kfree call to kzfree for async requests. As the request may contain sensitive data it needs to be zeroed before it can be reallocated by others. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: compress - Add pcomp interfaceGeert Uytterhoeven2009-03-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current "comp" crypto interface supports one-shot (de)compression only, i.e. the whole data buffer to be (de)compressed must be passed at once, and the whole (de)compressed data buffer will be received at once. In several use-cases (e.g. compressed file systems that store files in big compressed blocks), this workflow is not suitable. Furthermore, the "comp" type doesn't provide for the configuration of (de)compression parameters, and always allocates workspace memory for both compression and decompression, which may waste memory. To solve this, add a "pcomp" partial (de)compression interface that provides the following operations: - crypto_compress_{init,update,final}() for compression, - crypto_decompress_{init,update,final}() for decompression, - crypto_{,de}compress_setup(), to configure (de)compression parameters (incl. allocating workspace memory). The (de)compression methods take a struct comp_request, which was mimicked after the z_stream object in zlib, and contains buffer pointer and length pairs for input and output. The setup methods take an opaque parameter pointer and length pair. Parameters are supposed to be encoded using netlink attributes, whose meanings depend on the actual (name of the) (de)compression algorithm. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: api - Fix crypto_alloc_tfm/create_create_tfm return conventionHerbert Xu2009-02-181-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | This is based on a report and patch by Geert Uytterhoeven. The functions crypto_alloc_tfm and create_create_tfm return a pointer that needs to be adjusted by the caller when successful and otherwise an error value. This means that the caller has to check for the error and only perform the adjustment if the pointer returned is valid. Since all callers want to make the adjustment and we know how to adjust it ourselves, it's much easier to just return adjusted pointer directly. The only caveat is that we have to return a void * instead of struct crypto_tfm *. However, this isn't that bad because both of these functions are for internal use only (by types code like shash.c, not even algorithms code). This patch also moves crypto_alloc_tfm into crypto/internal.h (crypto_create_tfm is already there) to reflect this. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: api - Fix zeroing on freeHerbert Xu2009-02-051-1/+6
| | | | | | | | | Geert Uytterhoeven pointed out that we're not zeroing all the memory when freeing a transform. This patch fixes it by calling ksize to ensure that we zero everything in sight. Reported-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-17 10:09:39 +0000