Commit Graph

418 Commits

Author SHA1 Message Date
David Benjamin
5279ef5769 Clean up EC_POINT to byte conversions.
With the allocations and BN_CTX gone, ECDH and point2oct are much, much
shorter.

Bug: 242
Change-Id: I3421822e94100f7eb2f5f2373df7fb3b3311365e
Reviewed-on: https://boringssl-review.googlesource.com/c/33071
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Adam Langley <agl@google.com>
2018-11-13 17:27:59 +00:00
Adam Langley
c93ab63a53 Need cpu.h for |OPENSSL_ia32cap_P|.
(Otherwise the individual-file build breaks.)

Change-Id: Id3defd08cd2b49af1d8eb6890bd8454332c1aa1e
Reviewed-on: https://boringssl-review.googlesource.com/c/33124
Commit-Queue: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
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2018-11-13 17:15:39 +00:00
David Benjamin
c1c81613ce Rename EC_MAX_SCALAR_*.
These are used for field elements too.

Change-Id: I74e3dbcafdce34ad507f64a0718e0420b56b51ae
Reviewed-on: https://boringssl-review.googlesource.com/c/33070
Commit-Queue: David Benjamin <davidben@google.com>
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2018-11-13 03:22:04 +00:00
David Benjamin
9f152adfcf Use EC_RAW_POINT in ECDSA.
Now the only allocations in ECDSA are the ECDSA_SIG input and output.

Change-Id: If1fcde6dc2ee2c53f5adc16a7f692e22e9c238de
Reviewed-on: https://boringssl-review.googlesource.com/c/33069
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Adam Langley <agl@google.com>
2018-11-13 02:06:46 +00:00
David Benjamin
8618f2bfe0 Optimize EC_GFp_mont_method's cmp_x_coordinate.
For simplicity, punt order > field or width mismatches. Analogous
optimizations are possible, but the generic path works fine and no
commonly-used curve looks hits those cases.

Before:
Did 5888 ECDSA P-384 verify operations in 3094535us (1902.7 ops/sec)
After [+6.7%]:
Did 6107 ECDSA P-384 verify operations in 3007515us (2030.6 ops/sec)

Also we can fill in p - order generically and avoid extra copies of some
constants.

Change-Id: I38e1b6d51b28ed4f8cb74697b00a4f0fbc5efc3c
Reviewed-on: https://boringssl-review.googlesource.com/c/33068
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Adam Langley <agl@google.com>
2018-11-13 01:48:21 +00:00
David Benjamin
76e441bd66 Remove some easy BN_CTXs.
Change-Id: Ie7ff03a2c5b2ae8f56816b02182df40ce7ca0065
Reviewed-on: https://boringssl-review.googlesource.com/c/33066
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2018-11-12 22:04:40 +00:00
David Benjamin
be11d6d8d7 Push BIGNUM out of the cmp_x_coordinate interface.
This removes the failure cases for cmp_x_coordinate, this clearing our
earlier dilemma.

Change-Id: I057f705e49b0fb5c3fc9616ee8962a3024097b24
Reviewed-on: https://boringssl-review.googlesource.com/c/33065
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2018-11-12 21:46:36 +00:00
David Benjamin
fa3aadcd40 Push BIGNUM out of EC_METHOD's affine coordinates hook.
This is in preparation for removing the BIGNUM from cmp_x_coordinate.

Change-Id: Id8394248e3019a4897c238289f039f436a13679d
Reviewed-on: https://boringssl-review.googlesource.com/c/33064
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2018-11-12 21:32:53 +00:00
David Benjamin
adeb72b353 Fix r = p-n+epsilon ECDSA tests.
I forgot to refresh the public key in those tests, so they weren't
actually testing what they were supposed to. With this fix, injecting
too larger of a P_MINUS_ORDER into p256-x86_64.c now breaks tests.

Change-Id: I5d10a85c84b09629448beef67c86de607525fc71
Reviewed-on: https://boringssl-review.googlesource.com/c/33044
Reviewed-by: Adam Langley <agl@google.com>
2018-11-12 16:34:45 +00:00
David Benjamin
4706ea728e Inline ec_GFp_simple_group_get_degree.
This function is not EC_METHOD-specific, nor is there any reason it
would be (we do not support GF2m).

Change-Id: I4896cd16a107ad6a99be445a0dc0896293e8c8f9
Reviewed-on: https://boringssl-review.googlesource.com/c/32884
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Adam Langley <agl@google.com>
2018-11-08 23:56:02 +00:00
David Benjamin
fbec517255 Better test boundary cases of ec_cmp_x_coordinate.
This is done in preparation of generalizing the optimization to all our
EC_METHODs.

Wycheproof happily does cover the case where x needed a reduction, but
they don't appear to check x being just above or below n, only x = p - 1
(adjusted downwards). Also we can tailor the test vectors a bit to the
x == r*z^2 (mod p) strategy to make sure we don't mess that up.

Additionally, the scenario is different for n > p. There is also the
nuisance of EC_FELEM vs EC_SCALAR having different widths. All our
built-in curves are well-behaved (same width, and consistently p < n),
but secp160r1 is reachable from custom curves and violates both
properties. Generate some tests to cover it as well.

Change-Id: Iefa5ebfe689a81870be21f04f5962ab161d38dab
Reviewed-on: https://boringssl-review.googlesource.com/c/32985
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Adam Langley <agl@google.com>
2018-11-08 23:52:07 +00:00
Adam Langley
26b3fb0a77 Fix build when bcm.c is split up.
Some of the ec files now reference ECDSA_R_BAD_SIGNATURE. Instead, lift the
error-pushing to ecdsa.c.

Change-Id: Ice3e7a22c5099756599df0ab0b215c0752ada4ee
Reviewed-on: https://boringssl-review.googlesource.com/c/32984
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
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2018-11-08 22:35:51 +00:00
Adam Langley
9edbc7ff9f Revert "Revert "Speed up ECDSA verify on x86-64.""
This reverts commit e907ed4c4b. CPUID
checks have been added so hopefully this time sticks.

Change-Id: I5e0e5b87427c1230132681f936b3c70bac8263b8
Reviewed-on: https://boringssl-review.googlesource.com/c/32924
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
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2018-11-07 23:57:22 +00:00
David Benjamin
ffbf95ad41 Devirtualize ec_simple_{add,dbl}.
Now that the tuned add/dbl implementations are exposed, these can be
specific to EC_GFp_mont_method and call the felem_mul and felem_sqr
implementations directly.

felem_sqr and felem_mul are still used elsewhere in simple.c, however,
so we cannot get rid of them yet.

Change-Id: I5ea22a8815279931afc98a6fc578bc85e3f8bdcc
Reviewed-on: https://boringssl-review.googlesource.com/c/32849
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2018-11-06 18:32:11 +00:00
Adam Langley
e907ed4c4b Revert "Speed up ECDSA verify on x86-64."
This reverts commit 3d450d2844. It fails
SDE, looks like a missing CPUID check before using vector instructions.

Change-Id: I6b7dd71d9e5b1f509d2e018bd8be38c973476b4e
Reviewed-on: https://boringssl-review.googlesource.com/c/32864
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
2018-11-06 00:29:15 +00:00
David Benjamin
cfd50c63a1 Route the tuned add/dbl implementations out of EC_METHOD.
Some consumer stumbled upon EC_POINT_{add,dbl} being faster with a
"custom" P-224 curve than the built-in one and made "custom" clones to
work around this. Before the EC_FELEM refactor, EC_GFp_nistp224_method
used BN_mod_mul for all reductions in fallback point arithmetic (we
primarily support the multiplication functions and keep the low-level
point arithmetic for legacy reasons) which took quite a performance hit.

EC_FELEM fixed this, but standalone felem_{mul,sqr} calls out of
nistp224 perform a lot of reductions, rather than batching them up as
that implementation is intended. So it is still slightly faster to use a
"custom" curve.

Custom curves are the last thing we want to encourage, so just route the
tuned implementations out of EC_METHOD to close this gap. Now the
built-in implementation is always solidly faster than (or identical to)
the custom clone.  This also reduces the number of places where we mix
up tuned vs. generic implementation, which gets us closer to making
EC_POINT's representation EC_METHOD-specific.

Change-Id: I843e1101a6208eaabb56d29d342e886e523c78b4
Reviewed-on: https://boringssl-review.googlesource.com/c/32848
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2018-11-06 00:17:19 +00:00
Nir Drucker
3d450d2844 Speed up ECDSA verify on x86-64.
This commit improves the performance of ECDSA signature verification
(over NIST P-256 curve) for x86 platforms. The speedup is by a factor of 1.15x.
It does so by:
  1) Leveraging the fact that the verification does not need
     to run in constant time. To this end, we implemented:
    a) the function ecp_nistz256_points_mul_public in a similar way to
       the current ecp_nistz256_points_mul function by removing its constant
       time features.
    b) the Binary Extended Euclidean Algorithm (BEEU) in x86 assembly to
       replace the current modular inverse function used for the inversion.
  2) The last step in the ECDSA_verify function compares the (x) affine
     coordinate with the signature (r) value. Converting x from the Jacobian's
     representation to the affine coordinate requires to perform one inversions
     (x_affine = x * z^(-2)). We save this inversion and speed up the computations
     by instead bringing r to x (r_jacobian = r*z^2) which is faster.

The measured results are:
Before (on a Kaby Lake desktop with gcc-5):
Did 26000 ECDSA P-224 signing operations in 1002372us (25938.5 ops/sec)
Did 11000 ECDSA P-224 verify operations in 1043821us (10538.2 ops/sec)
Did 55000 ECDSA P-256 signing operations in 1017560us (54050.9 ops/sec)
Did 17000 ECDSA P-256 verify operations in 1051280us (16170.8 ops/sec)

After (on a Kaby Lake desktop with gcc-5):
Did 27000 ECDSA P-224 signing operations in 1011287us (26698.7 ops/sec)
Did 11640 ECDSA P-224 verify operations in 1076698us (10810.8 ops/sec)
Did 55000 ECDSA P-256 signing operations in 1016880us (54087.0 ops/sec)
Did 20000 ECDSA P-256 verify operations in 1038736us (19254.2 ops/sec)

Before (on a Skylake server platform with gcc-5):
Did 25000 ECDSA P-224 signing operations in 1021651us (24470.2 ops/sec)
Did 10373 ECDSA P-224 verify operations in 1046563us (9911.5 ops/sec)
Did 50000 ECDSA P-256 signing operations in 1002774us (49861.7 ops/sec)
Did 15000 ECDSA P-256 verify operations in 1006471us (14903.6 ops/sec)

After (on a Skylake server platform with gcc-5):
Did 25000 ECDSA P-224 signing operations in 1020958us (24486.8 ops/sec)
Did 10373 ECDSA P-224 verify operations in 1046359us (9913.4 ops/sec)
Did 50000 ECDSA P-256 signing operations in 1003996us (49801.0 ops/sec)
Did 18000 ECDSA P-256 verify operations in 1021604us (17619.4 ops/sec)

Developers and authors:
***************************************************************************
Nir Drucker (1,2), Shay Gueron (1,2)
(1) Amazon Web Services Inc.
(2) University of Haifa, Israel
***************************************************************************

Change-Id: Idd42a7bc40626bce974ea000b61fdb5bad33851c
Reviewed-on: https://boringssl-review.googlesource.com/c/31304
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2018-11-05 23:48:07 +00:00
Adam Langley
7f7e5e231e Include details about latest FIPS certification.
Change-Id: I84cda22a1086bce0da4797afae7975b3f39625de
Reviewed-on: https://boringssl-review.googlesource.com/c/32844
Commit-Queue: David Benjamin <davidben@google.com>
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2018-11-05 19:03:25 +00:00
David Benjamin
e62bf02a13 Don't overflow state->calls on 16TiB RAND_bytes calls.
This is an extremely important and practical use case. The comment that
state->calls is bounded by the reseed interval isn't quite true. We only
check on entry to the function, which means that it may exceed it by one
call's worth. Switch it to a size_t (which doesn't actually increase
memory because the struct was already padded).

Change-Id: Ia7646fd5b4142789c1d613280223baa4cd1a4a9b
Reviewed-on: https://boringssl-review.googlesource.com/c/32804
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2018-11-02 18:33:43 +00:00
David Benjamin
53d9fdd548 Fix the build on glibc 2.15.
glibc didn't add getauxval or sys/auxv.h until 2.16. glib 2.16.0 is six
years old and thus glibc 2.15 is past our support horizon, however
Android is using an outdated sysroot. Temporarily allow this until they
fix their toolchain.

Change-Id: I24e231cf40829e446969f67bf15c32e0b007de4c
Reviewed-on: https://boringssl-review.googlesource.com/c/32686
Reviewed-by: Robert Sloan <varomodt@google.com>
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2018-10-24 17:39:48 +00:00
Robert Sloan
127a1ec080 Fix redefinition of AEAD asserts in e_aes.c.
Following https://boringssl-review.googlesource.com/c/32506. Many parts
of android don't have c11 support, and so they complain when these
asserts implicitly redefine, e.g. AEAD_state_too_small.

Failure reference: https://android-build.googleplex.com/builds/pending/P6876320/aosp_cf_x86_phone-userdebug/latest/view/logs/build_error.log

Change-Id: Icbdd9aec6bf3b3d87e15d7f4f37505a1639b59c0
Reviewed-on: https://boringssl-review.googlesource.com/c/32684
Reviewed-by: Adam Langley <agl@google.com>
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2018-10-24 00:29:29 +00:00
Robert Sloan
b64c53fcfd Guard sys/auxv.h include on !BORINGSSL_ANDROID.
Some versions of Android libc don't even include the header.

Change-Id: Ib1033d2b8a10ba69d834ac1ed2564870e0e35d61
Reviewed-on: https://boringssl-review.googlesource.com/c/32664
Reviewed-by: David Benjamin <davidben@google.com>
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2018-10-23 18:20:59 +00:00
Adam Langley
35fb591f24 Flatten EVP_AEAD_CTX
An EVP_AEAD_CTX used to be a small struct that contained a pointer to
an AEAD-specific context. That involved heap allocating the
AEAD-specific context, which was a problem for users who wanted to setup
and discard these objects quickly.

Instead this change makes EVP_AEAD_CTX large enough to contain the
AEAD-specific context inside itself. The dominant AEAD is AES-GCM, and
that's also the largest. So, in practice, this shouldn't waste too much
memory.

Change-Id: I795cb37afae9df1424f882adaf514a222e040c80
Reviewed-on: https://boringssl-review.googlesource.com/c/32506
Commit-Queue: Adam Langley <agl@google.com>
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Reviewed-by: David Benjamin <davidben@google.com>
2018-10-22 23:12:57 +00:00
Adam Langley
dd412c428a Print the name of the binary when blocking in getrandom.
If a startup process blocks, it's very useful to know which it was.

Change-Id: I04dd541695a61cfceb8142ea45d4bd5e3492c6ec
Update-note: updates internal bug 117227663.
Reviewed-on: https://boringssl-review.googlesource.com/c/32544
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
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2018-10-18 18:13:12 +00:00
Yoshisato Yanagisawa
e341802802 Fix div.c to divide BN_ULLONG only if BN_CAN_DIVIDE_ULLONG defined.
Since clang-cl uses __udivti3 for __uint128_t division, linking div.obj
fails.  Let me make div.c use BN_CAN_DIVIDE_ULLONG to decide using
__uint128_t division instead of BN_ULLONG.

Bug: https://bugs.chromium.org/p/chromium/issues/detail?id=787617
Change-Id: I3ebe245f6b8917d59409591992efbabddea08187
Reviewed-on: https://boringssl-review.googlesource.com/c/32404
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Reviewed-by: David Benjamin <davidben@google.com>
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2018-10-10 15:33:35 +00:00
Aaron Green
28babde159 Include aes.h in mode/internal.h
block128_f was recently changed to take an AES_KEY instead of a void*,
but AES_KEY is not defined in base.h.  internal.h should not depend on
other sources to include aes.h for it.

Change-Id: I81aab5124ce4397eb76a83ff09779bfaea66d3c1
Reviewed-on: https://boringssl-review.googlesource.com/32364
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2018-10-03 17:36:04 +00:00
Aaron Green
c1eef7f795 [perlasm] Hide OPENSSL_armcap_P in assembly
This CL changes adds a ".hidden OPENSSL_armcap_P" statement to the
".comm OPENSSL_armcap_P" statements for the sha*-armv8.pl files,
similar to what was doen for the sha*-armv4.pl files in CL 3471.

Change-Id: I524b3dce7e5cfe017498847fbf9b8a5df4b98fce
Reviewed-on: https://boringssl-review.googlesource.com/c/32324
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2018-10-02 20:36:43 +00:00
David Benjamin
73535ab252 Fix undefined block128_f, etc., casts.
This one is a little thorny. All the various block cipher modes
functions and callbacks take a void *key. This allows them to be used
with multiple kinds of block ciphers.

However, the implementations of those callbacks are the normal typed
functions, like AES_encrypt. Those take AES_KEY *key. While, at the ABI
level, this is perfectly fine, C considers this undefined behavior.

If we wish to preserve this genericness, we could either instantiate
multiple versions of these mode functions or create wrappers of
AES_encrypt, etc., that take void *key.

The former means more code and is tedious without C++ templates (maybe
someday...). The latter would not be difficult for a compiler to
optimize out. C mistakenly allowed comparing function pointers for
equality, which means a compiler cannot replace pointers to wrapper
functions with the real thing. (That said, the performance-sensitive
bits already act in chunks, e.g. ctr128_f, so the function call overhead
shouldn't matter.)

But our only 128-bit block cipher is AES anyway, so I just switched
things to use AES_KEY throughout. AES is doing fine, and hopefully we
would have the sense not to pair a hypothetical future block cipher with
so many modes!

Change-Id: Ied3e843f0e3042a439f09e655b29847ade9d4c7d
Reviewed-on: https://boringssl-review.googlesource.com/32107
Reviewed-by: Adam Langley <agl@google.com>
2018-10-01 17:35:02 +00:00
Adam Langley
3474270abd Always print some diagnostic information when POST fails.
Debugging a POST failure when it prints nothing is painful. The
|check_test| helper already prints out information when it fails, but
some other paths were not handled. This change adds printfs for those
cases.

Change-Id: Ife71bb292a4f69679d0fa56686863aae9423e451
Updating-Note: updates internal bug 116469121
Reviewed-on: https://boringssl-review.googlesource.com/32145
Reviewed-by: David Benjamin <davidben@google.com>
2018-09-28 19:33:38 +00:00
Matthew Braithwaite
7039f40368 Rename inject-hash: Bazel does not like hyphens.
(Only in package names.  Hyphens in file names are file.)

Change-Id: I80b705a780ffbad056abe7a7868d5682b30d2d44
Reviewed-on: https://boringssl-review.googlesource.com/32144
Commit-Queue: Matt Braithwaite <mab@google.com>
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Reviewed-by: David Benjamin <davidben@google.com>
2018-09-26 21:50:36 +00:00
Adam Langley
5ede28c8a4 Tighten up getrandom handling.
While I don't believe EINTR can occur with a non-blocking getrandom call
when talking to the kernel directly, that may not be true when certain
sandboxing systems are being used.

Additionally, with this change we will no longer silently ignore errors
other than ENOSYS.

Update-Note: update internal bug 115344138.

Change-Id: I952c132cf325dcc17dc38e68f054abc41de1f8b0
Reviewed-on: https://boringssl-review.googlesource.com/32006
Reviewed-by: David Benjamin <davidben@google.com>
2018-09-20 16:15:51 +00:00
David Benjamin
5baee45652 Use Go modules with delocate.
This makes running go test, etc., in util/fipstools/delocate work! This
adds a go_executable command to CMake like:

  go_executable(delocate boringssl.googlesource.com/boringssl/util/fipstools/delocate)

which internally gets dependencies and whatnot so it behaves like usual
Go.

Update-Note: delocate has been rearranged a bit.
Change-Id: I244a7317dd8d4f2ab77a0daa624ed3e0b385faef
Reviewed-on: https://boringssl-review.googlesource.com/31885
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2018-09-17 22:19:52 +00:00
David Benjamin
302ef5ee12 Keep the GCM bits in one place.
This avoids needing to duplicate the "This API differs [...]" comment.

Change-Id: If07c77bb66ecdae4e525fa01cc8c762dbacb52f1
Reviewed-on: https://boringssl-review.googlesource.com/32005
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2018-09-17 22:12:21 +00:00
David Benjamin
580be2b184 Trim 88 bytes from each AES-GCM EVP_AEAD.
EVP_AEAD reused portions of EVP_CIPHER's GCM128_CONTEXT which contains both the
key and intermediate state for each operation. (The legacy OpenSSL EVP_CIPHER
API has no way to store just a key.) Split out a GCM128_KEY and store that
instead.

Change-Id: Ibc550084fa82963d3860346ed26f9cf170dceda5
Reviewed-on: https://boringssl-review.googlesource.com/32004
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2018-09-17 22:05:51 +00:00
Phillipp Schoppmann
bef6cc2933 Fix check of the pointer returned by BN_CTX_get
The check of `r` instead of `rr` was introduced in change
I298400b988e3bd108d01d6a7c8a5b262ddf81feb.

Change-Id: I4376a81c65856f6457b0a11276176bf35e9c647d
Reviewed-on: https://boringssl-review.googlesource.com/31844
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2018-09-11 16:35:22 +00:00
David Benjamin
967cd8219c Mark the C version of md5_block_data_order static.
This doesn't really matter, but once less visible symbol.

Change-Id: If4ee8cfe5c9db9d1c05ca74b8c6fee5cf3ea5a9b
Reviewed-on: https://boringssl-review.googlesource.com/31764
Reviewed-by: Adam Langley <agl@google.com>
2018-09-07 20:00:12 +00:00
David Benjamin
19ac2666b9 Make symbol-prefixing work on ARM.
The assembly files need some includes. Also evp.h has some conflicting
macros. Finally, md5.c's pattern of checking if a function name is
defined needs to switch to checking MD5_ASM.

Change-Id: Ib1987ba6f279144f0505f6951dead53968e05f20
Reviewed-on: https://boringssl-review.googlesource.com/31704
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2018-09-07 17:43:05 +00:00
Joshua Liebow-Feeser
8c7c6356e6 Support symbol prefixes
- In base.h, if BORINGSSL_PREFIX is defined, include
  boringssl_prefix_symbols.h
- In all .S files, if BORINGSSL_PREFIX is defined, include
  boringssl_prefix_symbols_asm.h
- In base.h, BSSL_NAMESPACE_BEGIN and BSSL_NAMESPACE_END are
  defined with appropriate values depending on whether
  BORINGSSL_PREFIX is defined; these macros are used in place
  of 'namespace bssl {' and '}'
- Add util/make_prefix_headers.go, which takes a list of symbols
  and auto-generates the header files mentioned above
- In CMakeLists.txt, if BORINGSSL_PREFIX and BORINGSSL_PREFIX_SYMBOLS
  are defined, run util/make_prefix_headers.go to generate header
  files
- In various CMakeLists.txt files, add "global_target" that all
  targets depend on to give us a place to hook logic that must run
  before all other targets (in particular, the header file generation
  logic)
- Document this in BUILDING.md, including the fact that it is
  the caller's responsibility to provide the symbol list and keep it
  up to date
- Note that this scheme has not been tested on Windows, and likely
  does not work on it; Windows support will need to be added in a
  future commit

Change-Id: If66a7157f46b5b66230ef91e15826b910cf979a2
Reviewed-on: https://boringssl-review.googlesource.com/31364
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2018-09-06 20:07:52 +00:00
David Benjamin
53affef486 No negative moduli.
https://boringssl-review.googlesource.com/31085 wasn't right. We already forbid
creating BN_MONT_CTX on negative numbers, which means almost all moduli already
don't work with BN_mod_exp_mont. Only -1 happened to not get rejected, but it
computed the wrong value. Reject it instead.

Update-Note: BN_mod_exp* will no longer work for negative moduli. It already
didn't work for all negative odd moduli other than -1, so rejecting -1 and
negative evens is unlikely to be noticed.

Bug: 71
Change-Id: I7c713d417e2e6512f3e78f402de88540809977e3
Reviewed-on: https://boringssl-review.googlesource.com/31484
Reviewed-by: Adam Langley <agl@google.com>
2018-09-04 22:26:53 +00:00
David Benjamin
2556f8ba60 Clarify thread-safety of key objects.
This often causes confusion since, for various silly reasons (intrinsic
ref-counting, FOO_METHOD, and RSA's cached Montgomery bits), the thread
safety of some functions don't match the usual const/non-const
distinction. Fix const-ness where easy and document it otherwise.

Change-Id: If2037a4874d7580cc79b18ee21f12ae0f47db7fd
Reviewed-on: https://boringssl-review.googlesource.com/31344
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2018-08-28 18:52:59 +00:00
David Benjamin
a130ce0b71 Update TLS 1.3 citations for the final RFC.
Change-Id: I2d1671a4f21a602191fd0c9b932244a376ac5713
Reviewed-on: https://boringssl-review.googlesource.com/31104
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Reviewed-by: Steven Valdez <svaldez@google.com>
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2018-08-16 18:37:50 +00:00
David Benjamin
378cca8016 Handle a modulus of -1 correctly.
Historically, OpenSSL's modular exponentiation functions tolerated negative
moduli by ignoring the sign bit. The special case for a modulus of 1 should do
the same. That said, this is ridiculous and the only reason I'm importing this
is BN_abs_is_word(1) is marginally more efficient than BN_is_one() and we
haven't gotten around to enforcing positive moduli yet.

Thanks to Guido Vranken and OSSFuzz for finding this issue and reporting to
OpenSSL.

(Imported from upstream's 235119f015e46a74040b78b10fd6e954f7f07774.)

Change-Id: I526889dfbe2356753aa1e6ecfd3aa3dc3a8cd2b8
Reviewed-on: https://boringssl-review.googlesource.com/31085
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
2018-08-16 15:57:10 +00:00
Adam Langley
cac346eddb Update Miller–Rabin check numbers.
This imports upstream's be4e1f79f631e49c76d02fe4644b52f907c374b2.

Change-Id: If0c4f066ba0ce540beaddd6a3e2540165d949dd2
Reviewed-on: https://boringssl-review.googlesource.com/31024
Commit-Queue: David Benjamin <davidben@google.com>
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2018-08-14 23:10:53 +00:00
David Benjamin
e6fd125d31 Align on a single CMake style.
We currently write a mix of "if (FOO)" and "if(FOO)". While the former looks
more like a usual language, CMake believes everything, even "if" and "else", is
just a really really funny function call (a "command").

We should pick something for consistency. Upstream CMake writes "if(FOO)", so
go with that one.

Change-Id: I67e0eb650a52670110b417312a362c9f161c8721
Reviewed-on: https://boringssl-review.googlesource.com/30807
Reviewed-by: Adam Langley <agl@google.com>
2018-08-10 16:22:31 +00:00
David Benjamin
a3202d7bc1 Add EVP_CTRL_AEAD_* constants.
Upstream generalized most of the EVP_CTRL_GCM_* constants to be their general
AEAD API in 1.1.0. Define them for better compatibility with code that targets
OpenSSL 1.1.0.

Change-Id: Ieaed8379eebde3718e3048f6290c21cdeac01efd
Reviewed-on: https://boringssl-review.googlesource.com/30604
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2018-08-09 17:08:15 +00:00
Adam Langley
6410e18e91 Update several assembly files from upstream.
This change syncs several assembly files from upstream. The only meanful
additions are more CFI directives.

Change-Id: I6aec50b6fddbea297b79bae22cfd68d5c115220f
Reviewed-on: https://boringssl-review.googlesource.com/30364
Reviewed-by: Adam Langley <agl@google.com>
2018-08-07 18:57:17 +00:00
Adam Langley
c448f1759a Fix the build with FIPS + NO_ASM.
Setting OPENSSL_NO_ASM skips enabling the “ASM” language in CMake.
However, the FIPS module fundamentally needs to build asm because
delocate works via textual assembly. Thus this combination is currently
broken with CMake.

This change ensures that support for building asm is enabled in CMake
for this combination.

Change-Id: I4516cf3a6f579ee7c72f04ac25d15785926cf125
Reviewed-on: https://boringssl-review.googlesource.com/29884
Reviewed-by: Adam Langley <agl@google.com>
2018-07-30 22:43:25 +00:00
Adam Langley
4732c544f7 Add ECDH_compute_key_fips inside the module.
This change adds a function so that an ECDH and the hashing of the
resulting 'x' coordinate can occur inside the FIPS boundary.

Change-Id: If93c20a70dc9dcbca49056f10915d3ce064f641f
Reviewed-on: https://boringssl-review.googlesource.com/30104
Reviewed-by: Adam Langley <agl@google.com>
2018-07-30 22:40:31 +00:00
David Benjamin
20b6a4e2a1 Clear r->neg in bn_mod_{add,sub}_consttime.
Otherwise, if the output BIGNUM was previously negative, we'd incorrectly give
a negative result. Thanks to Guide Vranken for reporting this issue!

Fortunately, this does not appear to come up in any existing caller. This isn't
all that surprising as negative numbers never really come up in cryptography.
Were it not for OpenSSL historically designing a calculator API, we'd just
delete the bit altogether. :-(

Bug: chromium:865924
Change-Id: I28fdc986dfaba3e38435b14ebf07453d537cc60a
Reviewed-on: https://boringssl-review.googlesource.com/29944
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2018-07-20 23:45:06 +00:00
Adam Langley
82639e6f53 Use a pool of |rand_state| objects.
Previously we used thread-local state objects in rand.c. However, for
applications with large numbers of threads, this can lead to excessive
memory usage.

This change causes us to maintain a mutex-protected pool of state
objects where the size of the pool equals the maximum concurrency of
|RAND_bytes|. This might lead to state objects bouncing between CPUs
more often, but should help the memory usage problem.

Change-Id: Ie83763d3bc139e64ac17bf7e015ad082b2f8a81a
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2018-07-06 21:25:37 +00:00