Commit Graph

11 Commits

Author SHA1 Message Date
David Benjamin
808f832917 Run the comment converter on libcrypto.
crypto/{asn1,x509,x509v3,pem} were skipped as they are still OpenSSL
style.

Change-Id: I3cd9a60e1cb483a981aca325041f3fbce294247c
Reviewed-on: https://boringssl-review.googlesource.com/19504
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-08-18 21:49:04 +00:00
David Benjamin
27e377ec65 Fix miscellaneous clang-tidy warnings.
There are still a ton of them, almost exclusively complaints that
function declaration and definitions have different parameter names. I
just fixed a few randomly.

Change-Id: I1072f3dba8f63372cda92425aa94f4aa9e3911fa
Reviewed-on: https://boringssl-review.googlesource.com/18706
Reviewed-by: Steven Valdez <svaldez@google.com>
2017-08-01 20:39:46 +00:00
David Benjamin
21882c5c75 Clarify rand locking comment.
This was specific to some old software on the test machine. Shrinking
the critical section to not cover getrandom is probably worthwhile
anyway though, so keep it around but make the comment less scary.

Change-Id: I8c17b6688ae93f6aef5d89c252900985d9e7bb52
Reviewed-on: https://boringssl-review.googlesource.com/16992
Reviewed-by: Adam Langley <agl@google.com>
2017-06-08 22:26:40 +00:00
David Benjamin
17ce286e07 Work around an apparent Linux or glibc bug on ppc64le in FIPS mode.
POWER8 has hardware transactional memory, which glibc uses to implement
locks. In some cases, taking a lock begins a transaction, wrapping
arbitrary user code (!) until the lock is released. If the transaction
is aborted, everything rewinds and glibc tries again with some other
implementation.

The kernel will abort the transaction in a variety of cases. Notably, on
a syscall, the transaction aborts and the syscall *does not happen*.
https://www.kernel.org/doc/Documentation/powerpc/transactional_memory.txt

Yet, for some reason, although the relevant change does appear to be in
the kernel, the transaction is being rewound with getrandom happening
anyway. This does not work very well.

Instead, only guard the DRBG access with the lock, not CRYPTO_sysrand.
This lock is only used to protect the DRBG from the destructor that
zeros everything.

Change-Id: Ied8350f1e808a09300651de4200c7b0d07b3a158
Reviewed-on: https://boringssl-review.googlesource.com/16985
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-06-07 19:59:24 +00:00
Adam Langley
c655cb7bf9 Break hwrand as well as urandom when FIPS_BREAK_TEST=CRNG is set.
Without this, trying to trigger the CRNGT on a system with RDRAND won't
work.

Change-Id: I0658a1f045620a2800df36277f67305bc0efff8b
Reviewed-on: https://boringssl-review.googlesource.com/16766
Reviewed-by: Adam Langley <agl@google.com>
2017-06-01 00:06:31 +00:00
Adam Langley
0ffc795efb Clear PRNG states in FIPS mode.
FIPS requires that the CTR-DRBG state be zeroed on process exit, however
destructors for thread-local data aren't called when the process exits.

This change maintains a linked-list of thread-local state which is
walked on exit to zero each thread's PRNG state. Any concurrently
running threads block until the process finishes exiting.

Change-Id: Ie5dc18e1bb2941a569d8b309411cf20c9bdf52ef
Reviewed-on: https://boringssl-review.googlesource.com/16764
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-05-31 23:39:53 +00:00
Adam Langley
429e85b516 Have a single function for FIPS test failures.
Change-Id: Iab7a738a8981de7c56d1585050e78699cb876dab
Reviewed-on: https://boringssl-review.googlesource.com/16467
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-05-18 20:33:55 +00:00
Adam Langley
5f107ce4d8 Prefer RDRAND in FIPS mode.
This change causes FIPS mode to use RDRAND in preference to the kernel's
entropy pool. This prevents issues where the ioctl that we have to do
when getrandom isn't supported transiently reports that the pool is
“empty” and causes us to block.

Change-Id: Iad50e443d88b168bf0b85fe1e91e153d79ab3703
Reviewed-on: https://boringssl-review.googlesource.com/16466
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-05-18 20:32:45 +00:00
Martin Kreichgauer
866c219432 crypto/fipsmodule: Allow breaking CRNG self-test.
Change-Id: I3d1ddc8cca9fb1da5d0b6a68ba2125c89e5bc0ce
Reviewed-on: https://boringssl-review.googlesource.com/16304
Commit-Queue: Martin Kreichgauer <martinkr@google.com>
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-05-12 18:43:09 +00:00
David Benjamin
91871018a4 Add an OPENSSL_ia32cap_get() function for C code.
OPENSSL_ia32cap_addr avoids any relocations within the module, at the
cost of a runtime TEXTREL, which causes problems in some cases.
(Notably, if someone links us into a binary which uses the GCC "ifunc"
attribute, the loader crashes.)

Fix C references of OPENSSL_ia32cap_addr with a function. This is
analogous to the BSS getters. A follow-up commit will fix perlasm with a
different scheme which avoids calling into a function (clobbering
registers and complicating unwind directives.)

Change-Id: I09d6cda4cec35b693e16b5387611167da8c7a6de
Reviewed-on: https://boringssl-review.googlesource.com/15525
Reviewed-by: Adam Langley <agl@google.com>
2017-04-27 20:34:23 +00:00
Adam Langley
7784104dd8 Move much of rand/ into the FIPS module.
Support for platforms that we don't support FIPS on doesn't need to be
in the module. Also, functions for dealing with whether fork-unsafe
buffering is enabled are left out because they aren't implementing any
cryptography and they use global r/w state, making their inclusion
painful.

Change-Id: I71a0123db6f5449e9dfc7ec7dea0944428e661aa
Reviewed-on: https://boringssl-review.googlesource.com/15084
Reviewed-by: Adam Langley <agl@google.com>
2017-04-21 22:03:18 +00:00