We only ever compute it for odd (actually, prime) modulus as part of
BN_mod_sqrt.
If we cared, we could probably drop this from most binaries. This is
used to when modular square root needs Tonelli-Shanks. Modular square
root is only used for compressed coordinates. Of our supported curves
(I'm handwaiving away EC_GROUP_new_curve_GFp here[*]), only P-224 needs
the full Tonelli-Shanks algorithm (p is 1 mod 8). That computes the
Legendre symbol a bunch to find a non-square mod p. But p is known at
compile-time, so we can just hard-code a sample non-square.
Sadly, BN_mod_sqrt has some callers outside of crypto/ec, so there's
also that. Anyway, it's also not that large of a function.
[*] Glancing through SEC 2 and Brainpool, secp224r1 is the only curve
listed in either document whose prime is not either 3 mod 4 or 5 mod 8.
Even 5 mod 8 is rare: only secp224k1. It's unlikely anyone would notice
if we broke annoying primes. Though OpenSSL does support "WTLS" curves
which has an additional 1 mod 8 case.
Change-Id: If36aa78c0d41253ec024f2d90692949515356cd1
Reviewed-on: https://boringssl-review.googlesource.com/15425
Reviewed-by: Adam Langley <agl@google.com>
Also fully deprecate ERR_error_string. Even when passing an external
buffer, passing the length explicitly is better.
Change-Id: Id2eb5723410f4564ef5e27c54ba79672133368e7
Reviewed-on: https://boringssl-review.googlesource.com/15424
Reviewed-by: Adam Langley <agl@google.com>
This changes the test names to use the last component, which is
generally the test data file, in place of the 2nd component, which is
less unique.
Change-Id: I182ad1ffb59595a6579a6a87e07af6cb11036e93
Reviewed-on: https://boringssl-review.googlesource.com/15584
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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Not requiring the list of assembly sources to be comma-separated is
helpful to environments where the list would more naturally be
treated as a list.
Change-Id: I43b18cdbeed1dc7ad217ff61557ac55860f40733
Reviewed-on: https://boringssl-review.googlesource.com/15585
Reviewed-by: Matt Braithwaite <mab@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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Chromium's test infrastruction does not actually support GTest. It
requires a custom test runner in //base. Split gtest_main.cc up into a
gtest_main.h which defines a support function we maintain and a default
runner. Chromium's build will swap that file out for a custom one.
BUG=129
Change-Id: I3e39fe3a931b3051a61d5f8eef514ca6a504f11c
Reviewed-on: https://boringssl-review.googlesource.com/15564
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
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This is done in three different places.
Change-Id: I1e55a14c464b1953b3d4de22b50688082ea65129
Reviewed-on: https://boringssl-review.googlesource.com/15306
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
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Looks like this file was forgotten when the old suites were removed.
Change-Id: Ied8d82e23ae5db0257add3c18eee46ee1a366637
Reviewed-on: https://boringssl-review.googlesource.com/15444
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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Change-Id: I4e34dabe302f7dacdf04a89052ad9fe9254a1b81
Reviewed-on: https://boringssl-review.googlesource.com/15404
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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Whether UCHAR_MAX expands to a signed or unsigned number appears to be a
matter of some debate. Or the Android headers are wrong. Just add a cast
and not think about it too hard.
Change-Id: I84e928bdfe459a9129cde276c82b60a318533552
Reviewed-on: https://boringssl-review.googlesource.com/15385
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
This can just be a bog-standard loop. The compiler should be plenty
smart enough to transform it into whatever it likes.
Change-Id: I7b782dd2a11902f6e5c9902d9624be26eee5c959
Reviewed-on: https://boringssl-review.googlesource.com/15366
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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CRYPTO_gcm128_init is currently assuming that it gets passed in
aesni_encrypt whenever it selects the AVX implementation. This is true,
but we can easily avoid this assumption by adding an extra boolean
input.
Change-Id: Ie7888323f0c93ff9df8f1cf3ba784fb35bb07076
Reviewed-on: https://boringssl-review.googlesource.com/15370
Reviewed-by: Adam Langley <agl@google.com>
These modes do internal random IV generation and are unsuitable for
non-testing purposes.
Change-Id: I14b98af8f6cf43b4fc835a2b04a9b0425b7651b7
Reviewed-on: https://boringssl-review.googlesource.com/15244
Reviewed-by: Adam Langley <agl@google.com>
This also fixes the comments regarding BN_prime_checks to match the
security level guarantees provided by BN_prime_checks.
Change-Id: I8032e88680bf51e8876e134b4253ed26c2072617
Reviewed-on: https://boringssl-review.googlesource.com/15304
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
C leaves some details as implementation-defined. We only support
implementations which define things consistent with the obvious
representation on current machines.
Change-Id: I255a2e54a86c8a7d987dea51ea7168ad66ad9ddd
Reviewed-on: https://boringssl-review.googlesource.com/15305
Reviewed-by: Adam Langley <agl@google.com>
CMake loves making archives, but that's not universal.
Change-Id: I5356b4701982748a46817e0094ad838605dcada6
Reviewed-on: https://boringssl-review.googlesource.com/15144
Reviewed-by: Adam Langley <agl@google.com>
Using |size_t| was correct, except for NaCl, which is a 64-bit build
with 32-bit pointers. In that configuration, |size_t| is smaller than
the native word size.
This change adds |crypto_word_t|, an unsigned type with native size and
switches constant-time functions to using it.
Change-Id: Ib275127063d5edbb7c55d413132711b7c74206b0
Reviewed-on: https://boringssl-review.googlesource.com/15325
Reviewed-by: Adam Langley <agl@google.com>
In some modes the compiler will emit a section for BSS symbols and
construct the values with labels, alignment and data instructions. This
change parses these sections and emits the local versions of each symbol
needed to make this work.
Change-Id: I8d43ffe4b5b734950aa4287a3dd7c0d2f191f2e4
Reviewed-on: https://boringssl-review.googlesource.com/15206
Reviewed-by: Adam Langley <agl@google.com>
We might want to back off on this in the future so that we don't upset
future compiler work but, for now, it's useful to know when we hit
something that we don't understand.
Change-Id: I763830b0ddcf5da20061fad673265d4a5855479c
Reviewed-on: https://boringssl-review.googlesource.com/15205
Reviewed-by: Adam Langley <agl@google.com>
In order to better handle BSS sections, rather than having a single loop
over the lines and state flags, pull lines as needed. This means that
subfunctions can process sections of the input.
Also, stop bothering to move the init_array to the end, it's already put
into its own section.
Change-Id: I0e62930c65d29baecb39ba0d8bbc21f2da3bde56
Reviewed-on: https://boringssl-review.googlesource.com/15204
Reviewed-by: Adam Langley <agl@google.com>
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>
With some optimisation settings, Clang was loading
BORINGSSL_bcm_text_hash with AVX2 instructions, which weren't getting
translated correctly. This seems to work and is less fragile.
The compiler just emits an leaq here. This is because it knows the
symbol is hidden (in the shared library sense), so it needn't go through
GOTPCREL. The assembler would have added a relocation, were the symbol
left undefined, but since we define the symbol later on, it all works
out without a relocation.
Were the symbol not hidden, the compiler would have emitted a movq by
way of GOTPCREL, but we can now translate those away anyway.
Change-Id: I442a22f4f8afaadaacbab7044f946a963ebfc46c
Reviewed-on: https://boringssl-review.googlesource.com/15384
Reviewed-by: Adam Langley <agl@google.com>
We BN_cmp with 1 at the top, so the absolute value code never runs.
This simplifies the BN_CTX business considerably. Also add a test for
negative prime numbers.
Change-Id: I500a56bc285c2f75576947cfb518e75c9e6861ce
Reviewed-on: https://boringssl-review.googlesource.com/15367
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
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Thanks to Rob Sloan for clearing out Android's uses of these functions.
I forgot we can hide these now.
BUG=97
Change-Id: I9bc7bf5ca379d3345743151e606f3e911367b4ed
Reviewed-on: https://boringssl-review.googlesource.com/15364
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Robert Sloan <varomodt@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
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Change-Id: Ibd6b9b12b3b622f67f69da5c2add8b1b040882f1
Reviewed-on: https://boringssl-review.googlesource.com/15344
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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The changes to delocate.go are needed because modes/ does things like
return the address of a module function. Both of these need to be
changed from referencing the GOT to using local symbols.
Rather than testing whether |ghash| is |gcm_ghash_avx|, we can just keep
that information in a flag.
The test for |aesni_ctr32_encrypt_blocks| is more problematic, but I
believe that it's superfluous and can be dropped: if you passed in a
stream function that was semantically different from
|aesni_ctr32_encrypt_blocks| you would already have a bug because
|CRYPTO_gcm128_[en|de]crypt_ctr32| will handle a block at the end
themselves, and assume a big-endian, 32-bit counter anyway.
Change-Id: I68a84ebdab6c6006e11e9467e3362d7585461385
Reviewed-on: https://boringssl-review.googlesource.com/15064
Reviewed-by: Adam Langley <agl@google.com>
SP 800-89 5.3.3 references FIPS 186 for the bounds on e. I /think/
that's section B.3.1 which says:
(b) The exponent e shall be an odd positive integer such that 2¹⁶ < e < 2²⁵⁶.
But that means that e has to be at least 17 bits. The check for
BN_is_odd ensures that 2¹⁶ itself is rejected.
Change-Id: Ib39f9d43032cbfe33317651c7b6eceb41b123291
Reviewed-on: https://boringssl-review.googlesource.com/15324
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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In FIPS mode we may print a message when we're waiting for additional
entropy. These warnings should not cause runner tests to fail.
Change-Id: I2beff64344fd2fce444576181f4234c4231de444
Reviewed-on: https://boringssl-review.googlesource.com/15266
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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Firstly, FIPS 186-4 C.3.2 is broken for w=3. In step 4.1 it generates a
random, 2-bit number but in step 4.2 it rejects all four possible values
and loops forever.
Secondly, BN_is_prime_fasttext_ex is broken when trial division is
requested and the prime is small. It finds that the prime is a multiple
of a known prime and rejects it. We inherited this from OpenSSL.
Thirdly, we were missing a BN_CTX_start/end in
BN_enhanced_miller_rabin_primality_test, which didn't matter but could
have mattered in the future.
Change-Id: Ie988e37b14bb22acb005fc0652860be6bbd2a55f
Reviewed-on: https://boringssl-review.googlesource.com/15264
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
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If all the inputs are given as assembly files then we can skip rewriting
symbols for the first file. If this file is bcm.s (i.e. the large
compiler output), this can save a few seconds of build time.
Change-Id: I4e4ea114acb86cd93e831b23b58f8c3401bc711c
Reviewed-on: https://boringssl-review.googlesource.com/15149
Reviewed-by: Adam Langley <agl@google.com>
delocate.go was adding redirector functions for the “_bss_get”
functions. (And they were going via the PLT too.)
Change-Id: I86bc9f0516a128a769068182cc280499f89b6c29
Reviewed-on: https://boringssl-review.googlesource.com/15148
Reviewed-by: Adam Langley <agl@google.com>
These relocations can be emitted for thread-local data. BoringSSL itself
doesn't include any thread-local variables that need linker support, but
ASAN and MSAN may inject these references in order to handle their own
bookkeeping.
Change-Id: I0c6e61d244be84d6bee5ccbf7c4ff4ea0f0b90fd
Reviewed-on: https://boringssl-review.googlesource.com/15147
Reviewed-by: Adam Langley <agl@google.com>
This is a version of PKCS7_get_certificates but does not require
crypto/x509.
BUG=54
Change-Id: I20152a8d1f3ed866d47e41fe576ea9f442490224
Reviewed-on: https://boringssl-review.googlesource.com/15129
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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A follow-up change will add a CRYPTO_BUFFER variant. This makes the
naming match the header and doesn't require including x509.h. (Though
like ssl.h and pkcs8.h, some of the functions are implemented with code
that depends on crypto/x509.)
Change-Id: I5a7de209f4f775fe0027893f711326d89699ca1f
Reviewed-on: https://boringssl-review.googlesource.com/15128
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
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BUG=76
Change-Id: I8b754ba17b3e0beee425929e4b53785b2e95f0ae
Reviewed-on: https://boringssl-review.googlesource.com/15164
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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