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eb9232f06f
boringssl/crypto
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David Benjamin eb9232f06f Fully reduce scalars in EC_POINT_mul. 
Along the way, this allows us to tidy up the invariants associated with
EC_SCALAR. They were fuzzy around ec_point_mul_scalar and some
computations starting from the digest in ECDSA. The latter I've put into
the type system with EC_LOOSE_SCALAR.

As for the former, Andres points out that particular EC implementations
are only good for scalars within a certain range, otherwise you may need
extra work to avoid the doubling case. To simplify curve
implementations, we reduce them fully rather than do the looser bit size
check, so they can have the stronger precondition to work with.

Change-Id: Iff9a0404f89adf8f7f914f8e8246c9f3136453f1
Reviewed-on: https://boringssl-review.googlesource.com/23664
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>
2017-12-08 17:55:54 +00:00
..
asn1 Use uint32_t for unicode code points. 2017-12-08 17:51:34 +00:00
base64 Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
bio Add missing errno.h include to bio_test.cc 2017-12-04 01:32:37 +00:00
bn_extra Remove the buggy RSA parser. 2017-10-24 17:39:46 +00:00
buf Always process handshake records in full. 2017-10-17 14:53:11 +00:00
bytestring Revert "Support high tag numbers in CBS/CBB." 2017-11-30 21:57:17 +00:00
chacha Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
cipher_extra Explicit fallthrough on switch 2017-09-20 19:58:25 +00:00
cmac Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
conf Add more compatibility symbols for Node. 2017-11-03 01:31:50 +00:00
curve25519 Move curve25519 code to third_party/fiat. 2017-11-03 22:23:59 +00:00
dh Fx DH_set0_pqg. 2017-10-05 18:50:48 +00:00
digest_extra Export EVP_parse_digest_algorithm and add EVP_marshal_digest_algorithm. 2017-09-25 20:44:13 +00:00
dsa Remove DSA_sign_setup too. 2017-11-22 21:01:11 +00:00
ec_extra Support high tag numbers in CBS/CBB. 2017-11-22 22:34:05 +00:00
ecdh Check EC_POINT/EC_GROUP compatibility more accurately. 2017-10-28 08:02:50 +00:00
ecdsa_extra Remove ECDSA_sign_setup and friends. 2017-11-22 20:23:40 +00:00
engine Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
err Reimplement OBJ_txt2obj and add a lower-level function. 2017-11-27 21:29:00 +00:00
evp Add some missing OpenSSL 1.1.0 accessors. 2017-11-22 18:43:38 +00:00
fipsmodule Fully reduce scalars in EC_POINT_mul. 2017-12-08 17:55:54 +00:00
hkdf Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
hmac_extra Convert a number of tests to GTest. 2017-06-01 17:02:13 +00:00
lhash Unexport more of lhash. 2017-10-25 04:17:18 +00:00
obj Also add a decoupled OBJ_obj2txt. 2017-11-30 18:21:48 +00:00
pem Clear some _CRT_SECURE_NO_WARNINGS warnings. 2017-10-25 04:14:28 +00:00
perlasm Revert assembly changes in "Hide CPU capability symbols in C." 2017-10-30 20:39:57 +00:00
pkcs7 Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
pkcs8 Export EVP_parse_digest_algorithm and add EVP_marshal_digest_algorithm. 2017-09-25 20:44:13 +00:00
poly1305 Remove custom memcpy and memset from poly1305_vec. 2017-11-10 20:53:30 +00:00
pool Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
rand_extra Remove CHROMIUM_ROLLING_MAGENTA_TO_ZIRCON scaffolding. 2017-09-18 21:34:32 +00:00
rc4 Simplify RC4 code and remove assembly. 2016-08-30 15:32:31 +00:00
rsa_extra Make BN_generate_dsa_nonce internally constant-time. 2017-11-20 16:18:30 +00:00
stack Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
test Clarify ERR_print_errors_* clear the error queue. 2017-09-05 17:31:25 +00:00
x509 Use uint32_t for unicode code points. 2017-12-08 17:51:34 +00:00
x509v3 Pretty-print large INTEGERs and ENUMERATEDs in hex. 2017-11-27 18:38:50 +00:00
CMakeLists.txt Move curve25519 code to third_party/fiat. 2017-11-03 22:23:59 +00:00
compiler_test.cc Test that nullptr has the obvious memory representation. 2017-07-28 17:39:28 +00:00
constant_time_test.cc Switch constant-time functions to using |crypto_word_t|. 2017-04-21 22:06:05 +00:00
cpu-aarch64-linux.c Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
cpu-arm-linux.c Add CRYPTO_needs_hwcap2_workaround. 2017-09-18 14:05:46 +00:00
cpu-arm.c
cpu-intel.c Use unsigned integers for masks. 2017-10-30 18:39:58 +00:00
cpu-ppc64le.c Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
crypto.c Hide CPU capability symbols in C. 2017-10-23 18:36:49 +00:00
ex_data.c Unexport more of lhash. 2017-10-25 04:17:18 +00:00
internal.h Tidy up alignof #defines. 2017-09-25 14:20:54 +00:00
mem.c Remove now unnecessary _POSIX_C_SOURCE bits to work around macOS bug. 2017-10-02 20:02:22 +00:00
refcount_c11.c Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
refcount_lock.c Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
refcount_test.cc Convert various tests to GTest. 2017-05-23 22:34:09 +00:00
thread_none.c Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
thread_pthread.c Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
thread_test.cc Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
thread_win.c Run the comment converter on libcrypto. 2017-08-18 21:49:04 +00:00
thread.c