linux-toradex.git/crypto/Kconfig, branch v4.9.7

crypto: powerpc - CRYPT_CRC32C_VPMSUM should depend on ALTIVEC

2016-08-09T10:25:09+00:00

The optimised crc32c implementation depends on VMX (aka. Altivec)
instructions, so the kernel must be built with Altivec support in order
for the crc32c code to build.

Fixes: 6dd7a82cc54e ("crypto: powerpc - Add POWER8 optimised crc32c")
Acked-by: Anton Blanchard 
Signed-off-by: Michael Ellerman 
Signed-off-by: Herbert Xu

crypto: powerpc - Add POWER8 optimised crc32c

2016-07-05T15:05:19+00:00

Use the vector polynomial multiply-sum instructions in POWER8 to
speed up crc32c.

This is just over 41x faster than the slice-by-8 method that it
replaces. Measurements on a 4.1 GHz POWER8 show it sustaining
52 GiB/sec.

A simple btrfs write performance test:

    dd if=/dev/zero of=/mnt/tmpfile bs=1M count=4096
    sync

is over 3.7x faster.

Signed-off-by: Anton Blanchard 
Signed-off-by: Herbert Xu

crypto: sha512-mb - Enable SHA512 multibuffer support

2016-06-28T08:06:37+00:00

Add the config CRYPTO_SHA512_MB which will enable the computation
using the SHA512 multi-buffer algorithm.

Signed-off-by: Megha Dey 
Reviewed-by: Fenghua Yu 
Reviewed-by: Tim Chen 
Signed-off-by: Herbert Xu

crypto: sha256-mb - Enable multibuffer support

2016-06-27T08:57:43+00:00

Add the config CRYPTO_SHA256_MB which will enable the computation using the
SHA256 multi-buffer algorithm.

Signed-off-by: Megha Dey 
Reviewed-by: Fenghua Yu 
Reviewed-by: Tim Chen 
Signed-off-by: Herbert Xu

crypto: ecdh - Add ECDH software support

2016-06-23T10:29:57+00:00

* 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 
Signed-off-by: Herbert Xu

crypto: dh - Add DH software implementation

2016-06-23T10:29:56+00:00

* Implement MPI based Diffie-Hellman under kpp API
 * Test provided uses data generad by OpenSSL

Signed-off-by: Salvatore Benedetto 
Signed-off-by: Herbert Xu

crypto: kpp - Key-agreement Protocol Primitives API (KPP)

2016-06-23T10:29:56+00:00

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 
Signed-off-by: Herbert Xu

crypto: sha3 - Add SHA-3 hash algorithm

2016-06-20T11:25:01+00:00

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 
Signed-off-by: Raveendra Padasalagi 
Signed-off-by: Herbert Xu

crypto: drbg - use CTR AES instead of ECB AES

2016-06-15T09:07:53+00:00

The CTR DRBG derives its random data from the CTR that is encrypted with
AES.

This patch now changes the CTR DRBG implementation such that the
CTR AES mode is employed. This allows the use of steamlined CTR AES
implementation such as ctr-aes-aesni.

Unfortunately there are the following subtile changes we need to apply
when using the CTR AES mode:

- the CTR mode increments the counter after the cipher operation, but
  the CTR DRBG requires the increment before the cipher op. Hence, the
  crypto_inc is applied to the counter (drbg->V) once it is
  recalculated.

- the CTR mode wants to encrypt data, but the CTR DRBG is interested in
  the encrypted counter only. The full CTR mode is the XOR of the
  encrypted counter with the plaintext data. To access the encrypted
  counter, the patch uses a NULL data vector as plaintext to be
  "encrypted".

Signed-off-by: Stephan Mueller 
Signed-off-by: Herbert Xu

crypto: rsa - select crypto mgr dependency

2016-05-05T06:27:05+00:00

The pkcs1pad template needs CRYPTO_MANAGER so it needs
to be explicitly selected by CRYPTO_RSA.

Reported-by: Jamie Heilman 
Signed-off-by: Tadeusz Struk 
Signed-off-by: Herbert Xu