linux-stable.git/include/crypto/dh.h, branch linux-5.4.y

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman

crypto: dh - add public key verification test

2018-07-08T16:26:22+00:00

According to SP800-56A section 5.6.2.1, the public key to be processed
for the DH operation shall be checked for appropriateness. The check
shall covers the full verification test in case the domain parameter Q
is provided as defined in SP800-56A section 5.6.2.3.1. If Q is not
provided, the partial check according to SP800-56A section 5.6.2.3.2 is
performed.

The full verification test requires the presence of the domain parameter
Q. Thus, the patch adds the support to handle Q. It is permissible to
not provide the Q value as part of the domain parameters. This implies
that the interface is still backwards-compatible where so far only P and
G are to be provided. However, if Q is provided, it is imported.

Without the test, the NIST ACVP testing fails. After adding this check,
the NIST ACVP testing passes. Testing without providing the Q domain
parameter has been performed to verify the interface has not changed.

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

crypto: dh - return unsigned value for crypto_dh_key_len()

2017-10-12T14:55:05+00:00

DH_KPP_SECRET_MIN_SIZE and dh_data_size() are both returning
unsigned values.

Signed-off-by: Tudor Ambarus 
Signed-off-by: Herbert Xu

crypto: kpp, (ec)dh - fix typos

2017-06-10T04:04:25+00:00

While here, add missing argument description (ndigits).

Signed-off-by: Tudor Ambarus 
Signed-off-by: Herbert Xu

crypto: doc - add KPP documentation

2016-12-13T23:38:06+00:00

Add the KPP API documentation to the kernel crypto API Sphinx
documentation. This addition includes the documentation of the
ECDH and DH helpers which are needed to create the approrpiate input
data for the crypto_kpp_set_secret function.

Signed-off-by: Stephan Mueller 
Signed-off-by: Jonathan Corbet

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