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mirror of git://git.gnupg.org/gnupg.git synced 2024-12-23 10:29:58 +01:00
Jussi Kivilinna 21fdef6963
common: Use platform memory zeroing function for wipememory
* common/mischelp.h (wipememory): Replace macro with function
prototype.
(wipememory2): Remove.
* common/mischelp.c (wipememory): New.
* configure.ac (AC_CHECK_FUNCS): Check for 'explicit_bzero' and
remove duplicated checks.
--

In new wipememory function, memory is cleared through platform
provided secure memory zeroing function, SecureZeroMemory
or explicit_bzero.

If none of these is available, memset is called through
volatile function pointer to so that compiler won't optimize
away the call.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
(cherry picked from commit 2a650772b4e1c78a4fd20bc88433930e5551fe9c)
2018-12-05 08:23:57 +01:00
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Common functionality used by all modules of GnuPG.