586 Commits

Author SHA1 Message Date
Pieter Wuille
e6d01e9347 Use size_t shifts when computing a size_t 2019-03-30 16:09:17 -07:00
practicalswift
248f046611 Make sure we're not using an uninitialized variable in secp256k1_wnaf_const(...) 2019-03-21 19:06:08 +01:00
Jonas Nick
9ab96f7b12 Use trivial algorithm in ecmult_multi if scratch space is small 2019-03-18 15:15:35 +00:00
Gregory Maxwell
d58bc93f2c Switch x86_64 asm to use "i" instead of "n" for immediate values.
The constraint "n" is a more obscure setting which is needed for
 special cases that don't apply to our use.

Use of "n" exposed some bugs in pre-release versions of clang.
This fixes #594
2019-03-10 22:52:12 +00:00
Jonas Nick
2277af5ff0 Fix integer overflow in ecmult_multi_var when n is large 2019-02-25 16:13:17 +00:00
DesWurstes
dbed75d969 Undefine STATIC_PRECOMPUTATION if using the basic config 2019-02-25 11:36:39 +03:00
Gregory Maxwell
85d0e1bcce
Merge #591: Make bench_internal obey secp256k1_fe_sqrt's contract wrt aliasing.
b76e45d Make bench_internal obey secp256k1_fe_sqrt's contract wrt aliasing. (Gregory Maxwell)

Pull request description:

  Bench_internal was previously incorrect but wasn't detected by -DVERIFY until PR #551.

Tree-SHA512: 5ecb9e3ba63ddf28cde4012154dbb1dda9b7178016d970dba58a4af20c31aa1ec3458ba2623541233fb16fceff7b3053054d6eee0229d0bfb6281d1a10554e9f
2019-02-24 19:20:54 +00:00
Jonas Nick
a697d82da9 Add trivial ecmult_multi to the benchmark tool 2019-02-23 20:30:31 +00:00
Jonas Nick
bade617417 Add trivial ecmult_multi algorithm. It is selected when no scratch space is given and just multiplies and adds the points. 2019-02-23 20:24:28 +00:00
Gregory Maxwell
20c5869df2
Merge #516: improvements to random seed in src/tests.c
be40c4d Fixup for C90 mixed declarations. (Gregory Maxwell)
8b3841c fix bug in fread() failure check (Don Viszneki)
cddef0c tests: add warning message when /dev/urandom fails (Don Viszneki)

Pull request description:

  I've made two small changes to `src/tests.c` circa random seed generation.

  Added a warning when `/dev/urandom` fails, mostly to defend against the case that someone should use the code verbatim, but also to enhance its illustrative power.

  Also I fixed a bug with how the return value of `fread()` was being evaluated. In fact, `/dev/urandom` was never being applied before as the check on the return value of `fread()` always failed!

Tree-SHA512: 239dbe8316220c2f0e5b370bf9a18f78196e96cc4a7edea58cf2521b2c9cbc8da065be96aa859f90324d57e388d30f7670ce6bc1cca52e5162e5ca66b1a55b34
2019-02-21 11:46:13 +00:00
Gregory Maxwell
b76e45d5d6 Make bench_internal obey secp256k1_fe_sqrt's contract wrt aliasing.
Bench_internal was previously incorrect but wasn't detected by
 -DVERIFY until PR #551.
2019-02-21 05:58:33 +00:00
Gregory Maxwell
870a977644
Merge #562: Make use of TAG_PUBKEY constants in secp256k1_eckey_pubkey_parse
d3cb1f9 Make use of TAG_PUBKEY constants in secp256k1_eckey_pubkey_parse (Ben Woosley)

Pull request description:

  This results in more self-documenting code.

  Constants defined here:
  1e6f1f5ad5/include/secp256k1.h (L175-L180)

Tree-SHA512: 2026103c487a5ebdea9a2f5ec2be96d74e38d5b2269b4df11e354bb54aba2925b47c3185f530205019840b00fc3501121acfa5234faf1d095d71777826414f69
2019-02-21 05:35:10 +00:00
Gregory Maxwell
be40c4d0b5 Fixup for C90 mixed declarations.
Reported-by: Jonas Nick <jonasd.nick@gmail.com>
2019-02-21 05:00:29 +00:00
Gregory Maxwell
c71dd2c08f
Merge #509: Fix algorithm selection in bench_ecmult
0f05173 Fix algorithm selection in bench_ecmult (Jonas Nick)

Pull request description:

  Without this commit using an unknown argument results in a segmentation fault.

Tree-SHA512: 85b8f977e62fa360ff6dc923bd86f08725c30e178d58f43d33cbd8eb69e54fa4ec76e4407624611a80554cf9961689bce6b216da735ac95b256d0d2f60fe3328
2019-02-21 04:47:12 +00:00
Gregory Maxwell
e96901a4b9
Merge #587: Make randomization of a non-signing context a noop
6198375 Make randomization of a non-signing context a noop (Tim Ruffing)

Pull request description:

  Before this commit secp256k1_context_randomize called illegal_callback
  when called on a context not initialized for signing. This is not
  documented. Moreover, it is not desirable because non-signing contexts
  may use randomization in the future.

  This commit makes secp256k1_context_randomize a noop in this case. This
  is safe because the context cannot be used for signing anyway.

  This fixes #573 and it fixes rust-bitcoin/rust-secp256k1#82.

Tree-SHA512: 34ddfeb004d9da8f4a77c739fa2110544c28939378e779226da52f410a0e36b3aacb3ebd2e3f3918832a9027684c161789cfdc27a133f2f0e0f1c47e8363029c
2019-02-21 04:33:59 +00:00
Gregory Maxwell
2ebdad772a
Merge #552: Make constants static:
496c5b4 Make constants static: static const secp256k1_ge secp256k1_ge_const_g; static const int CURVE_B; (Russell O'Connor)

Pull request description:

  static const secp256k1_ge secp256k1_ge_const_g;
  static const int CURVE_B;

Tree-SHA512: df8d34777d3b1b90eef875d50c2870e2480f08685b399a22eaf584ce294766e0de3a41523757a23e311e633886c89400313421282beca791326a06695f348940
2019-02-21 04:26:40 +00:00
Gregory Maxwell
1c131affd3
Merge #551: secp256k1_fe_sqrt: Verify that the arguments don't alias.
bf8b86c secp256k1_fe_sqrt: Verify that the arguments don't alias. (Russell O'Connor)

Pull request description:

Tree-SHA512: 4e9128625817be83a1259e7dbdb82c4be8ee0174af7d5e76eeac3245d23d6bf01378d9697dcb870eb61577afd7c0556cb3c6633e3b27504add14c10b18f7c607
2019-02-21 04:23:50 +00:00
Gregory Maxwell
ba698f883b
Merge #539: Assorted minor corrections
52ab96f clean dependendies in field_*_impl.h (Russell O'Connor)
deff5ed Correct math typos in field_*.h (Russell O'Connor)
4efb3f8 Add check that restrict pointers don't alias with all parameters. (Russell O'Connor)

Pull request description:

  * add more checks for restrict pointers.
  * correct math typos.
  * refine dependencies on "num.h"

Tree-SHA512: c368f577927db2ace3e7f46850cb2fdf9d7d169b698a9697767e1f82e9e7091f2b2fea0f7cf173048eb4c1bb56824c884fa849c04c595ee97766c01f346a54ec
2019-02-21 04:20:35 +00:00
Gregory Maxwell
949e85b009
Merge #550: Optimize secp256k1_fe_normalize_weak calls.
9bd89c8 Optimize secp256k1_fe_normalize_weak calls. Move secp256k1_fe_normalize_weak calls out of ECMULT_TABLE_GET_GE and ECMULT_TABLE_GET_GE_STORAGE and into secp256k1_ge_globalz_set_table_gej instead. (Russell O'Connor)

Pull request description:

  Move secp256k1_fe_normalize_weak calls out of ECMULT_TABLE_GET_GE and ECMULT_TABLE_GET_GE_STORAGE and into secp256k1_ge_globalz_set_table_gej instead.

Tree-SHA512: 7bbb1aca8e37a268a26d7061bd1f390db129e697792f1d5ddd10ea34927616edc26ef118b500c3e5e14d1d463196033ef64e4d34b765380325c24835458b7a9b
2019-02-21 04:14:40 +00:00
Tim Ruffing
6198375218 Make randomization of a non-signing context a noop
Before this commit secp256k1_context_randomize called illegal_callback
when called on a context not initialized for signing. This is not
documented. Moreover, it is not desirable because non-signing contexts
may use randomization in the future.

This commit makes secp256k1_context_randomize a noop in this case. This
is safe because the context cannot be used for signing anyway.

This fixes #573 and it fixes rust-bitcoin/rust-secp256k1#82.
2019-01-27 13:33:52 +01:00
liuyujun
74e2dbd68e JNI: fix use sig array 2019-01-03 09:08:58 +08:00
Tim Ruffing
c663397f46 Use __GNUC_PREREQ for detecting __builtin_expect 2018-12-17 11:47:25 +01:00
Tim Ruffing
3cb057f842 Fix possible integer overflow in DER parsing
If we’re in the last loop iteration, then `lenleft == 1` and it could
be the case that `ret == MAX_SIZE`, and so `ret +  lenleft` will
overflow to 0 and the sanity check will not catch it. Then we will
return `(int) MAX_SIZE`, which should be avoided because this value is
implementation-defined. (However, this is harmless because
`(int) MAX_SIZE == -1` on all supported platforms.)
2018-12-14 11:43:47 +01:00
Andrew Poelstra
b3bf5f99a3 ecmult_impl: expand comment to explain how effective affine interacts with everything 2018-11-10 14:01:13 +00:00
Peter Dettman
efa783f8f0 Store z-ratios in the 'x' coord they'll recover 2018-11-10 13:14:43 +00:00
Andrew Poelstra
ffd3b346fe add secp256k1_ge_set_all_gej_var test which deals with many infinite points 2018-11-09 00:20:53 +00:00
Andrew Poelstra
84740acd2a ecmult_impl: save one fe_inv_var 2018-11-09 00:20:53 +00:00
Andrew Poelstra
47045270fa ecmult_impl: eliminate scratch memory used when generating context 2018-11-09 00:20:51 +00:00
Andrew Poelstra
7f7a2ed3a8 ecmult_gen_impl: eliminate scratch memory used when generating context 2018-11-09 00:16:06 +00:00
Pieter Wuille
314a61d724
Merge #553: add static context object which has no capabilities
40fde61 prevent attempts to modify `secp256k1_context_no_precomp` (Andrew Poelstra)
ed7c084 add static context object which has no capabilities (Andrew Poelstra)

Pull request description:

Tree-SHA512: a843ed7ba00a00a46eec3146ce428d4b49eb440af766f44d731b1f51553d08de8cc9a0af5ed114d0dfdca6f4bf4a2ede4dbd6a37d6bd818b81630089424a0ba5
2018-11-05 18:25:56 -08:00
Pieter Wuille
1086fda4c1
Merge #354: [ECDH API change] Support custom hash function
c8fbc3c [ECDH API change] Allow pass arbitrary data to hash function (Kirill Fomichev)
b00be65 [ECDH API change] Support custom hash function (Kirill Fomichev)

Pull request description:

  Solve #352

Tree-SHA512: f5985874d03e976cdb3d59036af7720636ad1488da40fd3bd7881b1fb71b05036a952013d519baa84c4ce4b558bdef25c4ce76b384b297e4d0aece9e37e78a01
2018-10-17 12:14:48 -07:00
Ben Woosley
d3cb1f95eb
Make use of TAG_PUBKEY constants in secp256k1_eckey_pubkey_parse
This results in more self-documenting code.
2018-10-09 15:40:41 +09:00
Andrew Poelstra
40fde611bd prevent attempts to modify secp256k1_context_no_precomp 2018-10-04 15:16:38 +00:00
Andrew Poelstra
ed7c08417a add static context object which has no capabilities 2018-10-04 15:16:34 +00:00
Russell O'Connor
496c5b43b8 Make constants static:
static const secp256k1_ge secp256k1_ge_const_g;
static const int CURVE_B;
2018-08-15 15:42:06 -04:00
Russell O'Connor
bf8b86cc07 secp256k1_fe_sqrt: Verify that the arguments don't alias. 2018-08-14 18:21:13 -04:00
Russell O'Connor
9bd89c836b Optimize secp256k1_fe_normalize_weak calls.
Move secp256k1_fe_normalize_weak calls out of ECMULT_TABLE_GET_GE and ECMULT_TABLE_GET_GE_STORAGE and into secp256k1_ge_globalz_set_table_gej instead.
2018-08-12 23:47:38 -04:00
Russell O'Connor
52ab96fedb clean dependendies in field_*_impl.h 2018-07-06 08:40:35 -04:00
Russell O'Connor
deff5edd42 Correct math typos in field_*.h 2018-07-06 08:40:35 -04:00
Russell O'Connor
4efb3f8dd1 Add check that restrict pointers don't alias with all parameters. 2018-07-06 08:40:34 -04:00
Kirill Fomichev
c8fbc3c397 [ECDH API change] Allow pass arbitrary data to hash function 2018-05-17 00:38:58 +03:00
Kirill Fomichev
b00be65056 [ECDH API change] Support custom hash function 2018-05-17 00:05:09 +03:00
Andrew Poelstra
95e99f196f fix tests.c in the count == 0 case 2018-04-10 19:32:04 +00:00
Andrew Poelstra
6fe50439ae scratch: add stack frame support 2018-04-05 22:49:29 +00:00
Andrew Poelstra
7c1b91ba4b parameterize ecmult_const over input size 2018-04-05 21:05:13 +00:00
Pieter Wuille
dbc3ddd5e2
Merge #513: Increase sparsity of pippenger fixed window naf representation
ec0a7b3 Don't touch leading zeros in wnaf_fixed. (Jonas Nick)
9e36d1b Fix bug in wnaf_fixed where the wnaf array is not completely zeroed when given a 0 scalar. (Jonas Nick)
96f68a0 Don't invert scalar in wnaf_fixed when it is even because a caller might intentionally give a scalar with many leading zeros. (Jonas Nick)
6dbb007 Increase sparsity of pippenger fixed window naf representation (Jonas Nick)

Pull request description:

  Fixes #506

Tree-SHA512: 49a237a7d09c0c376ba4e6b1f522b9aff2517e420dfef9df810fd5ba920e0b98be8fe3f730b32e41b4aef475bc4cf3b13220024bd8d6f40c2744e6f392ff97a8
2018-04-05 09:46:08 -07:00
Jonas Nick
0f0517369c Fix algorithm selection in bench_ecmult 2018-03-27 09:21:11 +00:00
Pieter Wuille
fb9271dcf0
Merge #510: add a couple missing consts to ecmult_pippenger_wnaf
9b3ff03 add a couple missing `const`s to ecmult_pippenger_wnaf (Andrew Poelstra)

Pull request description:

Tree-SHA512: a58458bb4cb1af357b13a506ce8720ce9ecd0c1771a49d9f3ce9398ba7afc56977d722bbd30a63c7c76e63e659ed956d5e82ff762efc4b49488adf0756dc656a
2018-03-26 18:28:56 -07:00
Jonas Nick
ec0a7b3ae3 Don't touch leading zeros in wnaf_fixed. 2018-03-23 14:52:13 +00:00
Jonas Nick
9e36d1bfe2 Fix bug in wnaf_fixed where the wnaf array is not completely zeroed when given a 0 scalar. 2018-03-23 14:52:02 +00:00