18 Apr, 2019

1 commit

• c4741b230   crypto: run initcalls for generic implementations earlier ... Browse Code »

  Use subsys_initcall for registration of all templates and generic
  algorithm implementations, rather than module_init. Then change
  cryptomgr to use arch_initcall, to place it before the subsys_initcalls.

  This is needed so that when both a generic and optimized implementation
  of an algorithm are built into the kernel (not loadable modules), the
  generic implementation is registered before the optimized one.
  Otherwise, the self-tests for the optimized implementation are unable to
  allocate the generic implementation for the new comparison fuzz tests.

  Note that on arm, a side effect of this change is that self-tests for
  generic implementations may run before the unaligned access handler has
  been installed. So, unaligned accesses will crash the kernel. This is
  arguably a good thing as it makes it easier to detect that type of bug.

  Signed-off-by: Eric Biggers
  Signed-off-by: Herbert Xu

  Eric Biggers

  2019-04-18 22:15:03 +0800  

17 Nov, 2016

1 commit

• e8b2fa476   crypto: jitterentropy - drop duplicate header module.h ... Browse Code »

  Drop duplicate header module.h from jitterentropy-kcapi.c.

  Signed-off-by: Geliang Tang
  Signed-off-by: Herbert Xu

  Geliang Tang

  2016-11-17 23:34:52 +0800  

24 Jun, 2016

1 commit

• b578456c3   crypto: jitterentropy - use ktime_get_ns as fallback ... Browse Code »

  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
  Acked-by: Arnd Bergmann
  Signed-off-by: Herbert Xu

  Stephan Mueller

  2016-06-24 21:24:58 +0800  

14 Oct, 2015

1 commit

• f5128432b   crypto: jitterentropy - remove unnecessary information from a comment ... Browse Code »

  The clocksource does not provide clocksource_register() function since
  f893598 commit (clocksource: Mostly kill clocksource_register()), so
  let's remove unnecessary information about this function from a comment.

  Signed-off-by: Alexander Kuleshov
  Suggested-by: Herbert Xu
  Signed-off-by: Herbert Xu

  Alexander Kuleshov

  2015-10-14 22:23:16 +0800  

28 Jul, 2015

1 commit

• 0c5f0aa5d   crypto: jitterentropy - use safe format string parameters ... Browse Code »

  Since the API for jent_panic() does not include format string parameters,
  adjust the call to panic() to use a literal string to avoid any future
  callers from leaking format strings into the panic message.

  Signed-off-by: Kees Cook
  Acked-by: Stephan Mueller
  Signed-off-by: Herbert Xu

  Kees Cook

  2015-07-28 15:03:34 +0800  

25 Jun, 2015

1 commit

• dfc9fa919   crypto: jitterentropy - avoid compiler warnings ... Browse Code »

  The core of the Jitter RNG is intended to be compiled with -O0. To
  ensure that the Jitter RNG can be compiled on all architectures,
  separate out the RNG core into a stand-alone C file that can be compiled
  with -O0 which does not depend on any kernel include file.

  As no kernel includes can be used in the C file implementing the core
  RNG, any dependencies on kernel code must be extracted.

  A second file provides the link to the kernel and the kernel crypto API
  that can be compiled with the regular compile options of the kernel.

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

  Stephan Mueller

  2015-06-25 23:18:32 +0800