- 27 Jun, 2016 1 commit
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Florian Fainelli authored
Document the binding used by the Broadcom BCM5301x (Northstar) SoC random number generator. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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- 24 Jun, 2016 8 commits
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Stephen Rothwell authored
There is another ecdh_shared_secret in net/bluetooth/ecc.c Fixes: 3c4b2390 ("crypto: ecdh - Add ECDH software support") Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Florian Fainelli authored
The Broadcom BCM5301x SoCs (Northstar) utilize the same random number generator peripheral as Northstar Plus and BCM2835, but just like the NSP SoC, we need to enable the interrupt. Signed-off-by:
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Stephan Mueller authored
As part of the Y2038 development, __getnstimeofday is not supposed to be used any more. It is now replaced with ktime_get_ns. The Jitter RNG uses the time stamp to measure the execution time of a given code path and tries to detect variations in the execution time. Therefore, the only requirement the Jitter RNG has, is a sufficient high resolution to detect these variations. The change was tested on x86 to show an identical behavior as RDTSC. The used test code simply measures the execution time of the heart of the RNG: jent_get_nstime(&time); jent_memaccess(ec, min); jent_fold_time(NULL, time, &folded, min); jent_get_nstime(&time2); return ((time2 - time)); Signed-off-by:Stephan Mueller <smueller@chronox.de> Acked-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Herbert Xu authored
This patch replaces use of the obsolete blkcipher with skcipher. Signed-off-by:
David Howells <dhowells@redhat.com>
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Bin Liu authored
Adds software fallback support for small crypto requests. In these cases, it is undesirable to use DMA, as setting it up itself is rather heavy operation. Gives about 40% extra performance in ipsec usecase. Signed-off-by:
Bin Liu <b-liu@ti.com> [t-kristo@ti.com: dropped the extra traces, updated some comments on the code] Signed-off-by:
Tero Kristo <t-kristo@ti.com> Signed-off-by:
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Lokesh Vutla authored
The extra call to dmaengine_terminate_all is not needed, as the DMA is not running at this point. This improves performance slightly. Signed-off-by:
Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by:
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Tero Kristo authored
Change crypto queue size from 1 to 10 for omap SHA driver. This should allow clients to enqueue requests more effectively to avoid serializing whole crypto sequences, giving extra performance. Signed-off-by:
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Tero Kristo authored
Calling runtime PM API for every block causes serious performance hit to crypto operations that are done on a long buffer. As crypto is performed on a page boundary, encrypting large buffers can cause a series of crypto operations divided by page. The runtime PM API is also called those many times. Convert the driver to use runtime_pm autosuspend instead, with a default timeout value of 1 second. This results in upto ~50% speedup. Signed-off-by:
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- 23 Jun, 2016 21 commits
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Salvatore Benedetto authored
* Implement ECDH under kpp API * Provide ECC software support for curve P-192 and P-256. * Add kpp test for ECDH with data generated by OpenSSL Signed-off-by:
Salvatore Benedetto <salvatore.benedetto@intel.com> Signed-off-by:
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Salvatore Benedetto authored
* Implement MPI based Diffie-Hellman under kpp API * Test provided uses data generad by OpenSSL Signed-off-by:
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Salvatore Benedetto authored
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:
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Megha Dey authored
Herbert wants the sha1-mb algorithm to have an async implementation: https://lkml.org/lkml/2016/4/5/286. Currently, sha1-mb uses an async interface for the outer algorithm and a sync interface for the inner algorithm. This patch introduces a async interface for even the inner algorithm. Signed-off-by:
Megha Dey <megha.dey@linux.intel.com> Signed-off-by:
Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by:
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Herbert Xu authored
This patch fixes an old bug where requests can be reordered because some are processed by cryptd while others are processed directly in softirq context. The fix is to always postpone to cryptd if there are currently requests outstanding from the same tfm. This patch also removes the redundant use of cryptd in the async init function as init never touches the FPU. Signed-off-by: -
Herbert Xu authored
This patch fixes an old bug where requests can be reordered because some are processed by cryptd while others are processed directly in softirq context. The fix is to always postpone to cryptd if there are currently requests outstanding from the same tfm. This patch also removes the redundant use of cryptd in the async init function as init never touches the FPU. Signed-off-by: -
Herbert Xu authored
This patch fixes an old bug where requests can be reordered because some are processed by cryptd while others are processed directly in softirq context. The fix is to always postpone to cryptd if there are currently requests outstanding from the same tfm. Signed-off-by: -
Herbert Xu authored
This patch fixes an old bug where gcm requests can be reordered because some are processed by cryptd while others are processed directly in softirq context. The fix is to always postpone to cryptd if there are currently requests outstanding from the same tfm. Signed-off-by: -
Herbert Xu authored
This patch adds helpers to check whether a given tfm is currently queued. This is meant to be used by ablk_helper and similar entities to ensure that no reordering is introduced because of requests queued in cryptd with respect to requests being processed in softirq context. The per-cpu queue length limit is also increased to 1000 in line with network limits. Signed-off-by: -
Romain Perier authored
Now that crypto requests are chained together at the DMA level, we increase the size of the crypto queue for each engine. The result is that as the backlog list is reached later, it does not stop the crypto stack from sending asychronous requests, so more cryptographic tasks are processed by the engines. Signed-off-by:
Romain Perier <romain.perier@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
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Romain Perier authored
The Cryptographic Engines and Security Accelerators (CESA) supports the Multi-Packet Chain Mode. With this mode enabled, multiple tdma requests can be chained and processed by the hardware without software intervention. This mode was already activated, however the crypto requests were not chained together. By doing so, we reduce significantly the number of IRQs. Instead of being interrupted at the end of each crypto request, we are interrupted at the end of the last cryptographic request processed by the engine. This commits re-factorizes the code, changes the code architecture and adds the required data structures to chain cryptographic requests together before sending them to an engine (stopped or possibly already running). Signed-off-by:
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Romain Perier authored
This commits adds support for fine grained load balancing on multi-engine IPs. The engine is pre-selected based on its current load and on the weight of the crypto request that is about to be processed. The global crypto queue is also moved to each engine. These changes are required to allow chaining crypto requests at the DMA level. By using a crypto queue per engine, we make sure that we keep the state of the tdma chain synchronized with the crypto queue. We also reduce contention on 'cesa_dev->lock' and improve parallelism. Signed-off-by:
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Romain Perier authored
Currently the crypto requests were sent to engines sequentially. This commit moves the SRAM I/O operations from the prepare to the step functions. It provides flexibility for future works and allow to prepare a request while the engine is running. Signed-off-by:
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Romain Perier authored
So far, the 'process' operation was used to check if the current request was correctly handled by the engine, if it was the case it copied information from the SRAM to the main memory. Now, we split this operation. We keep the 'process' operation, which still checks if the request was correctly handled by the engine or not, then we add a new operation for completion. The 'complete' method copies the content of the SRAM to memory. This will soon become useful if we want to call the process and the complete operations from different locations depending on the type of the request (different cleanup logic). Signed-off-by:
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Romain Perier authored
Currently, the only way to access the tdma chain is to use the 'req' union from a mv_cesa_{ablkcipher,ahash}. This will soon become a problem if we want to handle the TDMA chaining vs standard/non-DMA processing in a generic way (with generic functions at the cesa.c level detecting whether the request should be queued at the DMA level or not). Hence the decision to move the chain field a the mv_cesa_req level at the expense of adding 2 void * fields to all request contexts (including non-DMA ones) and to remove the type completly. To limit the overhead, we get rid of the type field, which can now be deduced from the req->chain.first value. Once these changes are done the union is no longer needed, so remove it and move mv_cesa_ablkcipher_std_req and mv_cesa_req to mv_cesa_ablkcipher_req directly. There are also no needs to keep the 'base' field into the union of mv_cesa_ahash_req, so move it into the upper structure. Signed-off-by: -
Romain Perier authored
Add a TDMA descriptor at the end of the request for copying the output IV vector via a DMA transfer. This is a good way for offloading as much as processing as possible to the DMA and the crypto engine. This is also required for processing multiple cipher requests in chained mode, otherwise the content of the IV vector would be overwritten by the last processed request. Signed-off-by:
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Romain Perier authored
So far, the way that the type of a TDMA operation was checked was wrong. We have to use the type mask in order to get the right part of the flag containing the type of the operation. Signed-off-by:
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Romain Perier authored
Add a BUG_ON() call when the driver tries to launch a crypto request while the engine is still processing the previous one. This replaces a silent system hang by a verbose kernel panic with the associated backtrace to let the user know that something went wrong in the CESA driver. Signed-off-by:
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Romain Perier authored
Adding a macro constant to be used for the size of the crypto queue, instead of using a numeric value directly. It will be easier to maintain in case we add more than one crypto queue of the same size. Signed-off-by:
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Herbert Xu authored
On 16-byte requests the optimised version is actually slower than the generic code, so we should simply use that instead. Signed-off-by: -
Herbert Xu authored
This patch commit eed1e1af as it is only a workaround for the real bug and the proper fix has now been applied as 055ddaac ("crypto: user - re-add size check for CRYPTO_MSG_GETALG"). Signed-off-by:
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- 20 Jun, 2016 7 commits
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Dan Carpenter authored
We accidentally return PTR_ERR(NULL) which is success but we should return -ENOMEM. Fixes: 35591285 ('crypto: drbg - use CTR AES instead of ECB AES') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
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raveendra padasalagi authored
Added support for SHA-3 algorithm test's in tcrypt module and related test vectors. Signed-off-by:
Raveendra Padasalagi <raveendra.padasalagi@broadcom.com> Signed-off-by:
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Jeff Garzik authored
This patch adds the implementation of SHA3 algorithm in software and it's based on original implementation pushed in patch https://lwn.net/Articles/518415/ with additional changes to match the padding rules specified in SHA-3 specification. Signed-off-by:
Jeff Garzik <jgarzik@redhat.com> Signed-off-by:
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Tudor Ambarus authored
EXTRA_CFLAGS is still supported but its usage is deprecated. Signed-off-by:
Tudor Ambarus <tudor-dan.ambarus@nxp.com> Reviewed-by:
Horia Geantă <horia.geanta@nxp.com> Signed-off-by:
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Arnd Bergmann authored
An endianess fix mistakenly used higher_32_bits() instead of upper_32_bits(), and that doesn't exist: drivers/crypto/caam/desc_constr.h: In function 'append_ptr': drivers/crypto/caam/desc_constr.h:84:75: error: implicit declaration of function 'higher_32_bits' [-Werror=implicit-function-declaration] *offset = cpu_to_caam_dma(ptr); Signed-off-by:
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Herbert Xu authored
As it is if you ask for a sync gcm you may actually end up with an async one because it does not filter out async implementations of ghash. This patch fixes this by adding the necessary filter when looking for ghash. Cc: stable@vger.kernel.org Signed-off-by: -
Wu Fengguang authored
crypto/drbg.c:1637:39-40: Unneeded semicolon Remove unneeded semicolon. Generated by: scripts/coccinelle/misc/semicolon.cocci CC: Stephan Mueller <smueller@chronox.de> Signed-off-by:
Fengguang Wu <fengguang.wu@intel.com> Acked-by:
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- 15 Jun, 2016 3 commits
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Tudor Ambarus authored
Return the raw key with no other processing so that the caller can copy it or MPI parse it, etc. The scope is to have only one ANS.1 parser for all RSA implementations. Update the RSA software implementation so that it does the MPI conversion on top. Signed-off-by:
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Stephan Mueller authored
The TFM object maintains the key for the CTR DRBG. Signed-off-by:
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Stephan Mueller authored
The CTR DRBG update function performs a full CTR AES operation including the XOR with "plaintext" data. Hence, remove the XOR from the code and use the CTR mode to do the XOR. Signed-off-by:
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