Commit Graph

5001 Commits

Author SHA1 Message Date
David Benjamin
0a5f006736 Test that EC_POINT_mul works with the order.
|EC_POINT_mul| is almost exclusively used with reduced scalars, with
this exception. This comes from consumers following NIST SP 800-56A
section 5.6.2.3.2. (Though all our curves have cofactor one, so this
check isn't useful.)

Add a test for this so we don't accidentally break it.

Change-Id: I42492db38a1ea03acec4febdd7945c8a3933530a
Reviewed-on: https://boringssl-review.googlesource.com/23084
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 18:32:30 +00:00
David Benjamin
e7c95d91f8 Run TLS 1.3 tests at all variants and fix bugs.
We were only running a random subset of TLS 1.3 tests with variants and
let a lot of bugs through as a result.

- HelloRetryRequest-EmptyCookie wasn't actually testing what we were
  trying to test.

- The second HelloRetryRequest detection needs tweaks in draft-22.

- The empty HelloRetryRequest logic can't be based on non-empty
  extensions in draft-22.

- We weren't sending ChangeCipherSpec correctly in HRR or testing it
  right.

- Rework how runner reads ChangeCipherSpec by setting a flag which
  affects the next readRecord. This cuts down a lot of cases and works
  correctly if the client didn't send early data. (In that case, we
  don't flush CCS until EndOfEarlyData and runner deadlocks waiting for
  the ChangeCipherSpec to arrive.)

Change-Id: I559c96ea3a8b350067e391941231713c6edb2f78
Reviewed-on: https://boringssl-review.googlesource.com/23125
Reviewed-by: Steven Valdez <svaldez@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-11-20 18:19:18 +00:00
David Benjamin
3bba5ccf35 Add EndOfEarlyData to per-message tests.
Change-Id: I9da9734625d1d9d2c783830d8b4aecd34f51acc6
Reviewed-on: https://boringssl-review.googlesource.com/23124
Reviewed-by: Steven Valdez <svaldez@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-11-20 18:10:38 +00:00
David Benjamin
ac4d5346ad Add missing error path.
Error paths must always have OPENSSL_PUT_ERROR.

Change-Id: I0ed8c8288484a4ea69ec58317064ad3cd90ddd64
Reviewed-on: https://boringssl-review.googlesource.com/23104
Reviewed-by: Steven Valdez <svaldez@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-11-20 16:59:08 +00:00
David Benjamin
b8d677bfd0 Deduplicate built-in curves and give custom curves an order_mont.
I still need to revive the original CL, but right now I'm interested in
giving every EC_GROUP an order_mont and having different ownership of
that field between built-in and custom groups is kind of a nuisance. If
I'm going to do that anyway, better to avoid computing the entire
EC_GROUP in one go.

I'm using some manual locking rather than CRYPTO_once here so that it
behaves well in the face of malloc errors. Not that we especially care,
but it was easy to do.

This speeds up our ECDH benchmark a bit which otherwise must construct the
EC_GROUP each time (matching real world usage).

Before:
Did 7619 ECDH P-224 operations in 1003190us (7594.8 ops/sec)
Did 7518 ECDH P-256 operations in 1060844us (7086.8 ops/sec)
Did 572 ECDH P-384 operations in 1055878us (541.7 ops/sec)
Did 264 ECDH P-521 operations in 1062375us (248.5 ops/sec)

After:
Did 8415 ECDH P-224 operations in 1066695us (7888.9 ops/sec)
Did 7952 ECDH P-256 operations in 1022819us (7774.6 ops/sec)
Did 572 ECDH P-384 operations in 1055817us (541.8 ops/sec)
Did 264 ECDH P-521 operations in 1060008us (249.1 ops/sec)

Bug: 20
Change-Id: I7446cd0a69a840551dcc2dfabadde8ee1e3ff3e2
Reviewed-on: https://boringssl-review.googlesource.com/23073
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:52:03 +00:00
David Benjamin
66f8235510 Enforce some bounds and invariants on custom curves.
Later code will take advantage of these invariants. Enforcing them on
custom curves avoids making them go through a custom codepath.

Change-Id: I23cee72a90c2e4846b41e03e6be26bc3abeb4a45
Reviewed-on: https://boringssl-review.googlesource.com/23072
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:27:51 +00:00
David Benjamin
a08bba51a5 Add bn_mod_exp_mont_small and bn_mod_inverse_prime_mont_small.
These can be used to invert values in ECDSA. Unlike their BIGNUM
counterparts, the caller is responsible for taking values in and out of
Montgomery domain. This will save some work later on in the ECDSA
computation.

Change-Id: Ib7292900a0fdeedce6cb3e9a9123c94863659043
Reviewed-on: https://boringssl-review.googlesource.com/23071
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:23:48 +00:00
David Benjamin
40e4ecb793 Add "small" variants of Montgomery logic.
These use the square and multiply functions added earlier.

Change-Id: I723834f9a227a9983b752504a2d7ce0223c43d24
Reviewed-on: https://boringssl-review.googlesource.com/23070
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:23:01 +00:00
David Benjamin
a01aa9aa9f Split BN_from_montgomery_word into a non-BIGNUM core.
bn_from_montgomery_in_place is actually constant-time. It is, of course,
only used by non-constant-time BIGNUM callers, but that will soon be
fixed.

Change-Id: I2b2c9943dc3b8d6a4b5b19a5bc4fa9ebad532bac
Reviewed-on: https://boringssl-review.googlesource.com/23069
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:22:43 +00:00
David Benjamin
6bc18a3bd4 Add bn_mul_small and bn_sqr_small.
As part of excising BIGNUM from EC scalars, we will need a "words"
version of BN_mod_mul_montgomery. That, in turn, requires BN_sqr and
BN_mul for cases where we don't have bn_mul_mont.

BN_sqr and BN_mul have a lot of logic in there, with the most complex
cases being not even remotely constant time. Fortunately, those only
apply to RSA-sized numbers, not EC-sized numbers. (With the exception, I
believe, of 32-bit P-521 which just barely exceeds the cutoff.) Imposing
a limit also makes it easier to stack-allocate temporaries (BN_CTX
serves a similar purpose in BIGNUM).

Extract bn_mul_small and bn_sqr_small and test them as part of
bn_tests.txt. Later changes will build on these.

If we end up reusing these functions for RSA in the future (though that
would require tending to the egregiously non-constant-time code in the
no-asm build), we probably want to extract a version where there is an
explicit tmp parameter as in bn_sqr_normal rather than the stack bits.

Change-Id: If414981eefe12d6664ab2f5e991a359534aa7532
Reviewed-on: https://boringssl-review.googlesource.com/23068
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:22:30 +00:00
David Benjamin
64619deaa3 Const-correct some of the low-level BIGNUM functions.
Change-Id: I8c6257e336f54a3a1786df9c4103fcf29177030a
Reviewed-on: https://boringssl-review.googlesource.com/23067
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:20:40 +00:00
David Benjamin
bd275702d2 size_t a bunch of bn words bits.
Also replace a pointless call to bn_mul_words with a memset.

Change-Id: Ief30ddab0e84864561b73fe2776bd0477931cf7f
Reviewed-on: https://boringssl-review.googlesource.com/23066
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:20:28 +00:00
David Benjamin
73df153be8 Make BN_generate_dsa_nonce internally constant-time.
This rewrites the internals with a "words" variant that can avoid
bn_correct_top. It still ultimately calls bn_correct_top as the calling
convention is sadly still BIGNUM, but we can lift that calling
convention out incrementally.

Performance seems to be comparable, if not faster.

Before:
Did 85000 ECDSA P-256 signing operations in 5030401us (16897.3 ops/sec)
Did 34278 ECDSA P-256 verify operations in 5048029us (6790.4 ops/sec)

After:
Did 85000 ECDSA P-256 signing operations in 5021057us (16928.7 ops/sec)
Did 34086 ECDSA P-256 verify operations in 5010416us (6803.0 ops/sec)

Change-Id: I1159746dfcc00726dc3f28396076a354556e6e7d
Reviewed-on: https://boringssl-review.googlesource.com/23065
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:18:30 +00:00
David Benjamin
b25140c7b6 Fix timing leak in BN_from_montgomery_word.
BN_from_montgomery_word doesn't have a constant memory access pattern.
Replace the pointer trick with constant_time_select_w. There is, of
course, still the bn_correct_top leak pervasive in BIGNUM itself.

I wasn't able to measure a performance on RSA operations before or after
this change, but the benchmarks would vary wildly run to run. But one
would assume the logic here is nothing compared to the actual reduction.

Change-Id: Ide761fde3a091a93679f0a803a287aa5d0d4600d
Reviewed-on: https://boringssl-review.googlesource.com/22904
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:18:09 +00:00
David Benjamin
8db94be1d6 Add ECDSA tests for custom curves.
We don't currently have test coverage for the order_mont bits (or lack
thereof) for custom curves.

Change-Id: I865d547c783226a5a3d3d203e10b0e59bad36984
Reviewed-on: https://boringssl-review.googlesource.com/23064
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Adam Langley <agl@google.com>
2017-11-17 12:18:16 +00:00
Daniel Hirche
74b828f263 Clarify the documentation for |BN_is_bit_set|.
Change-Id: Ic859f19edff281334bd6975dd3c3b2931c901021
Reviewed-on: https://boringssl-review.googlesource.com/23044
Reviewed-by: David Benjamin <davidben@google.com>
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2017-11-15 14:23:11 +00:00
David Benjamin
e6f30e4ce1 Add tests for post-handshake CCS in draft "22".
The current PR says the sender only skips it during the handshake. Add a
test that we got this right.

Change-Id: Ib27eb942f11d955b8a24e32321efe474037f5254
Reviewed-on: https://boringssl-review.googlesource.com/23024
Reviewed-by: David Benjamin <davidben@google.com>
Reviewed-by: Steven Valdez <svaldez@chromium.org>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-11-14 05:40:38 +00:00
David Benjamin
13761f2833 Fix TLSInnerPlaintext limit.
See https://github.com/tlswg/tls13-spec/pull/1083. We misread the
original text spec, but it turns out the original spec text required
senders have version-specific maximum send fragments. The PR fixes this
off-by-one issue. Align with the new spec text uniformly.

This is a wire format change for our existing drafts *only if* records
have padding. We don't currently send padding, so this is fine. Unpadded
records continue to be capped at 2^14 bytes of plaintext (or 2^14+1
bytes of TLSInnerPlaintext structure).

Change-Id: I01017cfd13162504bb163dd59afd74aff0896cc4
Reviewed-on: https://boringssl-review.googlesource.com/23004
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-11-14 05:38:48 +00:00
Steven Valdez
ba8f1864c1 Disable 'draft 22' by default.
Change-Id: I1a0f264cbfa0eb5d4adac96d0fc24fa342f2b6a3
Reviewed-on: https://boringssl-review.googlesource.com/22946
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-11-12 03:26:05 +00:00
David Benjamin
4ddbc7bd0d Fix early data printout in bssl client.
Because the handshake returns early, it should query SSL_in_early_data.

Change-Id: I64d4c0e8de753832207d5c198c50d660f87afac6
Reviewed-on: https://boringssl-review.googlesource.com/22945
Reviewed-by: Steven Valdez <svaldez@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-11-11 06:35:25 +00:00
David Benjamin
ca8c2c7eab Refresh TLS fuzzer corpora.
Change-Id: Ie5055d6d1d33690f27cdd978a0aa696307880579
Reviewed-on: https://boringssl-review.googlesource.com/22964
Reviewed-by: Steven Valdez <svaldez@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
2017-11-11 06:34:10 +00:00
Steven Valdez
964b2377d0 Implement PR 1091 (TLS 1.3 draft '22').
This introduces a wire change to Experiment2/Experiment3 over 0RTT, however
as there is never going to be a 0RTT deployment with Experiment2/Experiment3,
this is valid.

Change-Id: Id541d195cbc4bbb3df7680ae2a02b53bb8ae3eab
Reviewed-on: https://boringssl-review.googlesource.com/22744
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Steven Valdez <svaldez@google.com>
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2017-11-11 06:24:55 +00:00
David Benjamin
3bcbb37552 Fix -early-data documentation.
Change-Id: I76a87ebf2f8be731d6da2381710c1caa60298f6e
Reviewed-on: https://boringssl-review.googlesource.com/22924
Reviewed-by: Steven Valdez <svaldez@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-11-11 06:19:56 +00:00
David Benjamin
a00fd08c2c Use consistent notation in ECDSA_do_verify comments.
Change-Id: Ia0cec71b5f8a6b7f03681b92cfacee13b2a74621
Reviewed-on: https://boringssl-review.googlesource.com/22890
Reviewed-by: Adam Langley <agl@google.com>
2017-11-10 22:44:01 +00:00
David Benjamin
d66bbf3413 Tidy up BN_mod_exp_mont.
This was primarily for my own understanding, but this should hopefully
also be clearer and more amenable to using unsigned indices later.

Change-Id: I09cc3d55de0f7d9284d3b3168d8b0446274b2ab7
Reviewed-on: https://boringssl-review.googlesource.com/22889
Reviewed-by: Adam Langley <agl@google.com>
2017-11-10 22:43:54 +00:00
David Benjamin
607f9807e5 Remove BN_TBIT.
Normal shifts do the trick just fine and are less likely to tempt the
compiler into inserting a jump.

Change-Id: Iaa1da1b6f986fd447694fcde8f3525efb9eeaf11
Reviewed-on: https://boringssl-review.googlesource.com/22888
Reviewed-by: Adam Langley <agl@google.com>
2017-11-10 22:43:37 +00:00
David Benjamin
bf3f6caaf3 Document some BIGNUM internals.
Change-Id: I8f044febf16afe04da8b176c638111a9574c4d02
Reviewed-on: https://boringssl-review.googlesource.com/22887
Reviewed-by: Adam Langley <agl@google.com>
2017-11-10 22:43:13 +00:00
David Benjamin
0a9222b824 Fix comment typo.
Change-Id: I482093000ee2e4ba371c78b4f7f8e8b121e71640
Reviewed-on: https://boringssl-review.googlesource.com/22886
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
2017-11-10 22:22:42 +00:00
David Benjamin
238c274054 Capitalization nit.
We capitalize things Go-style.

Change-Id: Id002efb8a85e4e1886164421bba059d9ca425964
Reviewed-on: https://boringssl-review.googlesource.com/22885
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
2017-11-10 22:22:35 +00:00
David Benjamin
6aedfc137b Remove unnecessary loop over BN_generate_dsa_nonce.
BN_generate_dsa_nonce will never generate a zero value of k.

Change-Id: I06964b815bc82aa678ffbc80664f9d788cf3851d
Reviewed-on: https://boringssl-review.googlesource.com/22884
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
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2017-11-10 22:20:47 +00:00
David Benjamin
896332581e Appease UBSan on pointer alignment.
Even without strict-aliasing, C does not allow casting pointers to types
that don't match their alignment. After this change, UBSan is happy with
our code at default settings but for the negative left shift language
bug.

Note: architectures without unaligned loads do not generate the same
code for memcpy and pointer casts. But even ARMv6 can perform unaligned
loads and stores (ARMv5 couldn't), so we should be okay here.

Before:
Did 11086000 AES-128-GCM (16 bytes) seal operations in 5000391us (2217026.6 ops/sec): 35.5 MB/s
Did 370000 AES-128-GCM (1350 bytes) seal operations in 5005208us (73923.0 ops/sec): 99.8 MB/s
Did 63000 AES-128-GCM (8192 bytes) seal operations in 5029958us (12525.0 ops/sec): 102.6 MB/s
Did 9894000 AES-256-GCM (16 bytes) seal operations in 5000017us (1978793.3 ops/sec): 31.7 MB/s
Did 316000 AES-256-GCM (1350 bytes) seal operations in 5005564us (63129.7 ops/sec): 85.2 MB/s
Did 54000 AES-256-GCM (8192 bytes) seal operations in 5054156us (10684.3 ops/sec): 87.5 MB/s

After:
Did 11026000 AES-128-GCM (16 bytes) seal operations in 5000197us (2205113.1 ops/sec): 35.3 MB/s
Did 370000 AES-128-GCM (1350 bytes) seal operations in 5005781us (73914.5 ops/sec): 99.8 MB/s
Did 63000 AES-128-GCM (8192 bytes) seal operations in 5032695us (12518.1 ops/sec): 102.5 MB/s
Did 9831750 AES-256-GCM (16 bytes) seal operations in 5000010us (1966346.1 ops/sec): 31.5 MB/s
Did 316000 AES-256-GCM (1350 bytes) seal operations in 5005702us (63128.0 ops/sec): 85.2 MB/s
Did 54000 AES-256-GCM (8192 bytes) seal operations in 5053642us (10685.4 ops/sec): 87.5 MB/s

(Tested with the no-asm builds; most of this code isn't reachable
otherwise.)

Change-Id: I025c365d26491abed0116b0de3b7612159e52297
Reviewed-on: https://boringssl-review.googlesource.com/22804
Reviewed-by: Adam Langley <agl@google.com>
2017-11-10 21:07:03 +00:00
David Benjamin
929f842810 Remove custom memcpy and memset from poly1305_vec.
This avoids upsetting the C compiler. UBSan is offended by the alignment
violations in those functions. The business with offset is also
undefined behavior (pointer arithmetic is supposed to stay within a
single object).

There is a small performance cost, however:

Before:
Did 6636000 ChaCha20-Poly1305 (16 bytes) seal operations in 5000475us (1327073.9 ops/sec): 21.2 MB/s
Did 832000 ChaCha20-Poly1305 (1350 bytes) seal operations in 5003481us (166284.2 ops/sec): 224.5 MB/s
Did 155000 ChaCha20-Poly1305 (8192 bytes) seal operations in 5026933us (30833.9 ops/sec): 252.6 MB/s

After:
Did 6508000 ChaCha20-Poly1305 (16 bytes) seal operations in 5000160us (1301558.4 ops/sec): 20.8 MB/s
Did 831000 ChaCha20-Poly1305 (1350 bytes) seal operations in 5002865us (166104.8 ops/sec): 224.2 MB/s
Did 155000 ChaCha20-Poly1305 (8192 bytes) seal operations in 5013204us (30918.4 ops/sec): 253.3 MB/s

(Tested with the no-asm build which disables the custom stitched mode
assembly and ends up using this one.)

Change-Id: I76d74183f1e04ad3726463a8871ee64be04ce674
Reviewed-on: https://boringssl-review.googlesource.com/22784
Reviewed-by: Adam Langley <agl@google.com>
2017-11-10 20:53:30 +00:00
Adam Langley
0967853d68 Add CFI start/end for _aesni_ctr32[_ghash]_6x
These functions don't appear to do any stack manipulation thus all they
need are start/end directives in order for the correct CFI tables to be
emitted.

Change-Id: I4c94a9446030d363fa4bcb7c8975c689df3d21dc
Reviewed-on: https://boringssl-review.googlesource.com/22765
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
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2017-11-09 00:31:14 +00:00
Adam Langley
ee2c1f3e68 aesni-gcm-x86_64.pl: sync CFI directives from upstream.
Change-Id: Id70cfc78c8d103117d4c2195206b023a5d51edc3
Reviewed-on: https://boringssl-review.googlesource.com/22764
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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2017-11-09 00:18:23 +00:00
David Benjamin
fa60369d6d Add error handling in ASN1_i2d_bio.
(Imported from 950d49d43900e67a1f9d02bc1a053a9fdc5c4257.)

Change-Id: Ia41c5076019b8cb16a9af9247b947fba7b20e87a
Reviewed-on: https://boringssl-review.googlesource.com/22725
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-11-08 23:20:33 +00:00
David Benjamin
b8e2d6327a es/asm/{aes-armv4|bsaes-armv7}.pl: make it work with binutils-2.29.
It's not clear if it's a feature or bug, but binutils-2.29[.1]
interprets 'adr' instruction with Thumb2 code reference differently,
in a way that affects calculation of addresses of constants' tables.

(Imported from upstream's b82acc3c1a7f304c9df31841753a0fa76b5b3cda.)

Change-Id: Ia0f5233a9fcfaf18b9d1164bf1c88217c0cbb60d
Reviewed-on: https://boringssl-review.googlesource.com/22724
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2017-11-08 16:53:04 +00:00
Martin Kreichgauer
40e8c921ca change URL type in third_party METADATA files to GIT
Change-Id: Ibaf1b4d64a651c39b073f3c4a7aa861d9c728f8b
Reviewed-on: https://boringssl-review.googlesource.com/22704
Reviewed-by: David Benjamin <davidben@google.com>
2017-11-07 21:38:33 +00:00
Martin Kreichgauer
aa4c3f218e fix a typo in third_party/fiat/METADATA
Change-Id: I91626b4e84f4a6b53be94d5e4823c634b6e7a5a1
Reviewed-on: https://boringssl-review.googlesource.com/22684
Reviewed-by: David Benjamin <davidben@google.com>
2017-11-07 19:43:31 +00:00
Daniel Hirche
d5dda9b803 Align |BN_div| with its documentation.
Change-Id: Idd0dc9dafb4ea9adbf22257018138c49f7980fee
Reviewed-on: https://boringssl-review.googlesource.com/22604
Reviewed-by: Adam Langley <agl@google.com>
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2017-11-06 22:55:30 +00:00
David Benjamin
b1cbe19790 Say a bit more about BIO_METHOD.
The hooks should be self-explanatory, except it's non-obvious that
everything assumes BIOs implement BIO_flush.

Change-Id: If09997d3724c4a7608273dc592dc2d099c4353e9
Reviewed-on: https://boringssl-review.googlesource.com/22664
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2017-11-06 19:08:01 +00:00
David Benjamin
5b90eb98f6 Add a -require-any-client-cert flag to bssl server
Useful for testing client cert stuff.

Change-Id: Ieb3cb02a685b22c18cfc50b44170221017889a57
Reviewed-on: https://boringssl-review.googlesource.com/22644
Commit-Queue: Steven Valdez <svaldez@google.com>
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2017-11-06 17:44:20 +00:00
David Benjamin
fdd5fed036 Also print name for SSL_SIGN_RSA_PKCS1_MD5_SHA1.
Missed one.

Change-Id: I61394db2dded0741cffa977071be998e3f4e4b50
Reviewed-on: https://boringssl-review.googlesource.com/22645
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2017-11-06 17:27:31 +00:00
Adam Langley
b2c312d670 curve25519: fiat-crypto field arithmetic.
Each operation was translated from fiat-crypto output using fiat-crypto
prettyprint.py. For example fe_mul is synthesized in
https://github.com/mit-plv/fiat-crypto/blob/master/src/Specific/X25519/C32/femul.v,
and shown in the last Coq-compatible form at
https://github.com/mit-plv/fiat-crypto/blob/master/src/Specific/X25519/C32/femulDisplay.log.

Benchmarks on Google Cloud's unidentified Intel Xeon with AVX2:

git checkout $VARIANT && ( cd build && rm -rf * && CC=clang CXX=clang++ cmake -GNinja -DCMAKE_TOOLCHAIN_FILE=../util/32-bit-toolchain.cmake -DCMAKE_BUILD_TYPE=Release .. && ninja && ./tool/bssl speed -filter 25519 )

this branch:

Did 11382 Ed25519 key generation operations in 1053046us (10808.6 ops/sec)
Did 11169 Ed25519 signing operations in 1038080us (10759.3 ops/sec)
Did 2925 Ed25519 verify operations in 1001346us (2921.1 ops/sec)
Did 12000 Curve25519 base-point multiplication operations in 1084851us (11061.4 ops/sec)
Did 3850 Curve25519 arbitrary point multiplication operations in 1085565us (3546.5 ops/sec)

Did 11466 Ed25519 key generation operations in 1049821us (10921.9 ops/sec)
Did 11000 Ed25519 signing operations in 1013317us (10855.4 ops/sec)
Did 3047 Ed25519 verify operations in 1043846us (2919.0 ops/sec)
Did 12000 Curve25519 base-point multiplication operations in 1068924us (11226.2 ops/sec)
Did 3850 Curve25519 arbitrary point multiplication operations in 1090598us (3530.2 ops/sec)

Did 10309 Ed25519 key generation operations in 1003320us (10274.9 ops/sec)
Did 11000 Ed25519 signing operations in 1017862us (10807.0 ops/sec)
Did 3135 Ed25519 verify operations in 1098624us (2853.6 ops/sec)
Did 9000 Curve25519 base-point multiplication operations in 1046608us (8599.2 ops/sec)
Did 3132 Curve25519 arbitrary point multiplication operations in 1038963us (3014.5 ops/sec)

master:

Did 11564 Ed25519 key generation operations in 1068762us (10820.0 ops/sec)
Did 11104 Ed25519 signing operations in 1024278us (10840.8 ops/sec)
Did 3206 Ed25519 verify operations in 1049179us (3055.7 ops/sec)
Did 12000 Curve25519 base-point multiplication operations in 1073619us (11177.1 ops/sec)
Did 3550 Curve25519 arbitrary point multiplication operations in 1000279us (3549.0 ops/sec)
andreser@linux-andreser:~/boringssl$ build/tool/bssl speed -filter 25519
Did 11760 Ed25519 key generation operations in 1072495us (10965.1 ops/sec)
Did 10800 Ed25519 signing operations in 1003486us (10762.5 ops/sec)
Did 3245 Ed25519 verify operations in 1080399us (3003.5 ops/sec)
Did 12000 Curve25519 base-point multiplication operations in 1076021us (11152.2 ops/sec)
Did 3570 Curve25519 arbitrary point multiplication operations in 1005087us (3551.9 ops/sec)
andreser@linux-andreser:~/boringssl$ build/tool/bssl speed -filter 25519
Did 11438 Ed25519 key generation operations in 1041115us (10986.3 ops/sec)
Did 11000 Ed25519 signing operations in 1012589us (10863.2 ops/sec)
Did 3312 Ed25519 verify operations in 1082834us (3058.6 ops/sec)
Did 12000 Curve25519 base-point multiplication operations in 1061318us (11306.7 ops/sec)
Did 3580 Curve25519 arbitrary point multiplication operations in 1004923us (3562.5 ops/sec)

squashed: curve25519: convert field constants to unsigned.

import re, sys, math

def weight(i):
    return 2**int(math.ceil(25.5*i))

def convert(t):
    limbs = [x for x in t.groups() if x.replace('-','').isdigit()]
    v = sum(weight(i)*x for (i,x) in enumerate(map(int, limbs))) % (2**255-19)
    limbs = [(v % weight(i+1)) // weight(i) for i in range(10)]
    assert v == sum(weight(i)*x for (i,x) in enumerate(limbs))

    i = 0
    ret = ''
    for s in t.groups():
        if s.replace('-','').isdigit():
            ret += str(limbs[i])
            i += 1
        else:
            ret += s
    return ret

fe_re = re.compile(r'(\s*,\s*)'.join(r'(-?\d+)' for i in range(10)))
print (re.sub(fe_re, convert, sys.stdin.read()))

Change-Id: Ibd4f7f5c38e5c4d61c9826afb406baebe2be5168
Reviewed-on: https://boringssl-review.googlesource.com/22385
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2017-11-03 22:39:31 +00:00
Andres Erbsen
5b280a80df Move curve25519 code to third_party/fiat.
This change doesn't actually introduce any Fiat code yet. It sets up the
directory structure to make the diffs in the next change clearer.

Change-Id: I38a21fb36b18a08b0907f9d37b7ef5d7d3137ede
Reviewed-on: https://boringssl-review.googlesource.com/22624
Reviewed-by: David Benjamin <davidben@google.com>
2017-11-03 22:23:59 +00:00
David Benjamin
55761e6802 Use a higher iteration limit for RSA key generation at e = 3.
Generating a 2048-bit RSA key with e = 3 (don't do this), the failure
rate at 5*bits iterations appears to be around 7 failures in 1000 tries.
Bump the limit up to 32*bits. This should give a failure rate of around
2 failures in 10^14 tries.

(The FIPS 186-4 algorithm is meant for saner values of e, like 65537. e
= 3 implies a restrictive GCD requirement: the primes must both be 2 mod
3.)

Change-Id: Icd373f61e2eb90df5afaff9a0fc2b2fbb6ec3f0a
Reviewed-on: https://boringssl-review.googlesource.com/22584
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
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2017-11-03 19:37:31 +00:00
Andres Erbsen
431e767c23 curve25519: adhere to preconditions of fe_*.
Previously, the ed25519 and SPAKE implementations called field element
operations in ways that did not satisfy the preconditions about ranges
of limbs. Furthermore, replacing signed field arithmetic with unsigned field
arithmetic with similar specifications caused tests to fail.  This commit
addresses this in three steps:

(1) Split fe into fe and fe_loose, tracking the bounds
(2) Insert carry operations before uses of fe_add/fe_sub/fe_neg whose
input is already within only the loose bounds
(3) Assert that each field element is within the appropriate bounds at
the beginning and end of every field operation.

Throughput diff:

Ed25519 key generation: -2%
Ed25519 signing: -2%
Ed25519 verify: -2%
X25519: roughly unchanged

Detailed benchmarks on Google Cloud's unidentified Intel Xeon with AVX2:
git checkout $VARIANT && ( cd build && rm -rf * && CC=clang CXX=clang++ cmake -GNinja -DCMAKE_TOOLCHAIN_FILE=../util/32-bit-toolchain.cmake -DCMAKE_BUILD_TYPE=Release .. && ninja && ./tool/bssl speed -filter 25519 )

this branch:

Did 11206 Ed25519 key generation operations in 1029462us (10885.3 ops/sec)
Did 11104 Ed25519 signing operations in 1035735us (10720.9 ops/sec)
Did 3278 Ed25519 verify operations in 1087969us (3013.0 ops/sec)
Did 12000 Curve25519 base-point multiplication operations in 1078962us (11121.8 ops/sec)
Did 3610 Curve25519 arbitrary point multiplication operations in 1002767us (3600.0 ops/sec)

Did 11662 Ed25519 key generation operations in 1077690us (10821.3 ops/sec)
Did 10780 Ed25519 signing operations in 1011474us (10657.7 ops/sec)
Did 3289 Ed25519 verify operations in 1083638us (3035.1 ops/sec)
Did 12000 Curve25519 base-point multiplication operations in 1087477us (11034.7 ops/sec)
Did 3610 Curve25519 arbitrary point multiplication operations in 1017023us (3549.6 ops/sec)

Did 11018 Ed25519 key generation operations in 1011606us (10891.6 ops/sec)
Did 11000 Ed25519 signing operations in 1029961us (10680.0 ops/sec)
Did 3124 Ed25519 verify operations in 1045163us (2989.0 ops/sec)
Did 12000 Curve25519 base-point multiplication operations in 1081770us (11092.9 ops/sec)
Did 3610 Curve25519 arbitrary point multiplication operations in 1014503us (3558.4 ops/sec)

master:

Did 11662 Ed25519 key generation operations in 1059449us (11007.6 ops/sec)
Did 10908 Ed25519 signing operations in 1000081us (10907.1 ops/sec)
Did 3333 Ed25519 verify operations in 1078798us (3089.5 ops/sec)
Did 12000 Curve25519 base-point multiplication operations in 1072831us (11185.4 ops/sec)
Did 3850 Curve25519 arbitrary point multiplication operations in 1075821us (3578.7 ops/sec)

Did 11102 Ed25519 key generation operations in 1017540us (10910.6 ops/sec)
Did 11000 Ed25519 signing operations in 1013279us (10855.8 ops/sec)
Did 3311 Ed25519 verify operations in 1066866us (3103.5 ops/sec)
Did 12000 Curve25519 base-point multiplication operations in 1069668us (11218.4 ops/sec)
Did 3905 Curve25519 arbitrary point multiplication operations in 1095501us (3564.6 ops/sec)

Did 11206 Ed25519 key generation operations in 1014127us (11049.9 ops/sec)
Did 10908 Ed25519 signing operations in 1015821us (10738.1 ops/sec)
Did 3344 Ed25519 verify operations in 1100592us (3038.4 ops/sec)
Did 12000 Curve25519 base-point multiplication operations in 1072847us (11185.2 ops/sec)
Did 3570 Curve25519 arbitrary point multiplication operations in 1009373us (3536.8 ops/sec)

Change-Id: Ia014386daf36c913f3ea44c5f9a420b98670e465
Reviewed-on: https://boringssl-review.googlesource.com/22104
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
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2017-11-03 18:40:11 +00:00
David Benjamin
6cc352e216 Add helper functions for SSL_SIGN_*.
We end up writing these switch cases everywhere. Let consumers decompose
these a bit. The original thought was folks should write switch-cases so
they handle everything they support, but that's a pain. As long as
algorithm preferences are always configured, we can still add new
dimensions because folks won't be asked to sign algorithms that depend
on dimensions they don't understand.

Change-Id: I3dd7f067f2c55212f0201876546bc70fee032bcf
Reviewed-on: https://boringssl-review.googlesource.com/22524
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Steven Valdez <svaldez@google.com>
2017-11-03 16:05:11 +00:00
Daniel Hirche
2eb2889702 bn/exp: don't check |copy_to_prebuf|'s retval in |BN_mod_exp_mont_consttime|.
It always returns one, so just void it.

Change-Id: I8733cc3d6b20185e782cf0291e9c0dc57712bb63
Reviewed-on: https://boringssl-review.googlesource.com/22564
Reviewed-by: Adam Langley <agl@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-11-03 15:43:52 +00:00
David Benjamin
6dda166d21 Support additional curve names.
Node's default settings spell P-256 as prime256v1. This comes from
OpenSSL additionally allowing the long and short names of each curve's
NID. This works out to one additional name per curve for the ones we
support. To avoid depending on the giant OID table, this replicates the
names in libssl.

Change-Id: I456a2db6939eb6745e5a9d2f12cf6886e6265b9f
Reviewed-on: https://boringssl-review.googlesource.com/22545
Commit-Queue: Adam Langley <agl@google.com>
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2017-11-03 01:32:49 +00:00
David Benjamin
a02ed04d52 Add more compatibility symbols for Node.
Change-Id: Iaeff3adc6da216e965126eaa181427d5318f07d5
Reviewed-on: https://boringssl-review.googlesource.com/22544
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2017-11-03 01:31:50 +00:00