Commit Graph

59 Commits

Author SHA1 Message Date
Gilles Peskine
0827d5c07d Timing self test: print some diagnosis information
Print some not-very-nice-looking but helpful diagnosis information if
the timing selftest fails. Since the failures tend to be due to heavy
system load that's hard to reproduce, this information is necessary to
understand what's going on.
2017-12-20 19:22:30 +01:00
Gilles Peskine
d92f0aa3be mbedtls_timing_get_timer: don't use uninitialized memory
mbedtls_timing_get_timer with reset=1 is called both to initialize a
timer object and to reset an already-initialized object. In an
initial call, the content of the data structure is indeterminate, so
the code should not read from it. This could crash if signed overflows
trap, for example.

As a consequence, on reset, we can't return the previously elapsed
time as was previously done on Windows. Return 0 as was done on Unix.
2017-12-20 18:53:52 +01:00
Gilles Peskine
a0af95f052 Timing: fix mbedtls_set_alarm(0) on Unix/POSIX
The POSIX/Unix implementation of mbedtls_set_alarm did not set the
mbedtls_timing_alarmed flag when called with 0, which was inconsistent
with what the documentation implied and with the Windows behavior.
2017-12-20 18:50:03 +01:00
Manuel Pégourié-Gonnard
325ce093f9 Give better error messages for semi-portable parts
Previously it was failing with errors about headers not found, which is
suboptimal in terms of clarity. Now give a clean error with pointer to the
documentation.

Do the checks in the .c files rather than check_config.h as it keeps them
closer to the platform-specific implementations.
2016-02-22 10:47:32 +01:00
Manuel Pégourié-Gonnard
37ff14062e Change main license to Apache 2.0 2015-09-04 14:21:07 +02:00
Manuel Pégourié-Gonnard
e578b1c79a Relax timing_self_test for windows idiosyncrasies 2015-08-18 20:11:48 +02:00
Manuel Pégourié-Gonnard
91bbfb6fb7 Make timing selftest less sensitive
- allow up to 12.5% security/error margin
- use larger delays
- this avoid the security/error margin being too low

The test used to fail about 1 out of 6 times on some buildbots VMs, but never
failed on the physical machines used for development.
2015-08-10 14:33:12 +02:00
Manuel Pégourié-Gonnard
6fb8187279 Update date in copyright line 2015-07-28 17:11:58 +02:00
Manuel Pégourié-Gonnard
5791109707 Make the hardclock test optional
Known to fail on VMs (such as the buildbots), see eg
http://blog.badtrace.com/post/rdtsc-x86-instruction-to-detect-vms/
2015-07-01 19:22:12 +02:00
Manuel Pégourié-Gonnard
cde2aba0af Do no test net_usleep in timing_selftest
Timing belongs in libcrypto (due to havege depending on it)
while net.c was put in libtls (only test ssl servers use it)
2015-06-25 10:59:57 +02:00
Manuel Pégourié-Gonnard
ba19432d2e Move from asm to __asm by default
- GCC with -std=c99 warns about asm but likes __asm
_ armcc5 has __asm but not asm
2015-05-29 10:18:09 +02:00
Manuel Pégourié-Gonnard
d4f04dba42 net.c now depends on select() unconditionally 2015-05-14 21:58:34 +02:00
Manuel Pégourié-Gonnard
a63bc94a2d Remove timing_m_sleep() -> net_usleep() 2015-05-14 21:58:34 +02:00
Manuel Pégourié-Gonnard
ca3bdc5632 Add mbedtls_timing_set/get_delay() 2015-05-12 20:45:34 +02:00
Manuel Pégourié-Gonnard
8903fe0fd3 Define timing_selftest() even with TIMING_ALT 2015-05-12 19:30:45 +02:00
Manuel Pégourié-Gonnard
8408a94969 Remove MBEDTLS_ from internal macros 2015-04-09 13:52:55 +02:00
Manuel Pégourié-Gonnard
2cf5a7c98e The Great Renaming
A simple execution of tmp/invoke-rename.pl
2015-04-08 13:25:31 +02:00
Manuel Pégourié-Gonnard
7f8099773e Rename include directory to mbedtls 2015-03-10 11:23:56 +00:00
Manuel Pégourié-Gonnard
fe44643b0e Rename website and repository 2015-03-06 13:17:10 +00:00
Manuel Pégourié-Gonnard
6d71e4e6c3 Fix one more warning on windows 2015-02-11 12:54:35 +00:00
Manuel Pégourié-Gonnard
dda5213982 Fix harmless warnings with mingw in timing.c 2015-02-11 12:33:40 +00:00
Manuel Pégourié-Gonnard
38433535e3 Fix hardclock() with mingw64 2015-02-11 12:33:40 +00:00
Manuel Pégourié-Gonnard
860b51642d Fix url again 2015-01-28 17:12:07 +00:00
Manuel Pégourié-Gonnard
085ab040aa Fix website url to use https. 2015-01-23 11:06:27 +00:00
Manuel Pégourié-Gonnard
9698f5852c Remove maintainer line. 2015-01-23 10:59:00 +00:00
Manuel Pégourié-Gonnard
19f6b5dfaa Remove redundant "all rights reserved" 2015-01-23 10:54:00 +00:00
Manuel Pégourié-Gonnard
a658a4051b Update copyright 2015-01-23 09:55:24 +00:00
Manuel Pégourié-Gonnard
967a2a5f8c Change name to mbed TLS in the copyright notice 2015-01-22 14:28:16 +00:00
Sander Niemeijer
ef5087d150 Added explicit casts to prevent compiler warnings when trying to build for iOS 2014-08-21 23:48:14 +02:00
Manuel Pégourié-Gonnard
462906f955 Do no test net_usleep() when not defined 2014-08-14 11:34:35 +02:00
Alfred Klomp
b308dd72d9 timing.c: avoid referencing garbage value
Found with Clang's `scan-build` tool.

When get_timer() is called with `reset` set to 1, the value of
t->start.tv_sec is used as a rvalue without being initialized first.
This is relatively harmless because the result of get_timer() is not
used by the callers when called in "reset mode". However, scan-build
prints a warning.

Silence the warning by only calculating the delta on non-reset runs,
returning zero otherwise.
2014-08-14 11:34:35 +02:00
Paul Bakker
66d5d076f7 Fix formatting in various code to match spacing from coding style 2014-06-17 17:06:47 +02:00
Paul Bakker
d8bb82665e Fix code styling for return statements 2014-06-17 14:06:49 +02:00
Manuel Pégourié-Gonnard
e1ac0f8c5d Add back timing selftest with new hardclock test 2014-06-12 21:15:50 +02:00
Paul Bakker
9af723cee7 Fix formatting: remove trailing spaces, #endif with comments (> 10 lines) 2014-05-01 13:03:14 +02:00
Manuel Pégourié-Gonnard
cef4ad2509 Adapt sources to configurable config.h name 2014-04-30 16:40:20 +02:00
Manuel Pégourié-Gonnard
0f79babd4b Disable timing_selftest() for now 2014-04-09 15:49:51 +02:00
Manuel Pégourié-Gonnard
79e58421be Also test net_usleep in timing_selttest() 2014-04-04 16:42:44 +02:00
Manuel Pégourié-Gonnard
d6aebe108a Add 'volatile' to hardclock()'s asm
Prevents calls from being optimised away in timing_self_test().
(Should no be a problem for calls from other files.)
2014-04-04 16:33:01 +02:00
Manuel Pégourié-Gonnard
470fc935b5 Add timing_self_test() with consistency tests 2014-04-04 16:33:01 +02:00
Manuel Pégourié-Gonnard
487588d0bf Whitespace fixes 2014-04-04 16:33:01 +02:00
Manuel Pégourié-Gonnard
dfbf9c711d Fix bug in m_sleep() 2014-03-14 08:41:00 +01:00
Paul Bakker
f2561b3f69 Ability to provide alternate timing implementation 2014-02-06 15:32:26 +01:00
Paul Bakker
fa6a620b75 Defines for UEFI environment under MSVC added 2013-10-29 14:05:38 +01:00
Paul Bakker
bb0139c924 - Moved to more flexible define structure
- Added exception for OpenBSD on Sparc64 (no privilege for call)
2012-10-31 09:53:08 +00:00
Paul Bakker
49d75678a5 - Support INTEGRITY OS 2012-09-26 15:22:07 +00:00
Paul Bakker
ca41010b68 - Expanded clobber list on i386 RDTSC call 2011-10-19 14:27:36 +00:00
Paul Bakker
2eee902be3 - Better timer for Windows platforms
- Made alarmed volatile for better Windows compatibility
2011-04-24 15:28:55 +00:00
Paul Bakker
b96f154e51 - Fixed copyright message 2010-07-18 20:36:00 +00:00
Paul Bakker
84f12b76fc - Updated Copyright to correct entity 2010-07-18 10:13:04 +00:00