This enables testing overflow is correctly encoded in the recid, and
likely triggers more edge cases.
Also introduce a Sage script to generate the parameters.
34debf7a6d Modify .travis.yml to explictly pass no in env vars instead of setting to nothing (Elichai Turkel)
ef37761fee Change travis.sh to check if variables are equal to yes instead of not-empty. Before this, setting `VALGRIND=wat` was considered as true, and to make it evaluate as false you had to unset the variable `VALGRIND=` but not it checks if `VALGRIND=yes` and if it's not `yes` then it's evaluated to false (Elichai Turkel)
Pull request description:
ACKs for top commit:
real-or-random:
ACK 34debf7a6d
jonasnick:
ACK 34debf7a6d
Tree-SHA512: 91becfbc9cb7587ee55b2bceb604ea0aed8860990d63a5f414b11db92180c090ea8bcc048c2fb67a094e892138e3be46f00562bf78b7c3369232457289cde447
5738e8622d tests: Initialize random group elements fully (Tim Ruffing)
Pull request description:
Also fix add a missing comment.
ACKs for top commit:
sipa:
utACK 5738e8622d
Tree-SHA512: c7723e225434e7044379f307b2977a3a5251080793bd87b377a2bbf1d18b39ca05f6fb3b427acec32c3b34f4de678fe7087a2dcca4b5f03ec1fc680a88d82b9a
f431b3f28a valgrind_ctime_test: Add schnorrsig_sign (Jonas Nick)
16ffa9d97c schnorrsig: Add taproot test case (Jonas Nick)
8dfd53ee3f schnorrsig: Add benchmark for sign and verify (Jonas Nick)
4e43520026 schnorrsig: Add BIP-340 compatible signing and verification (Jonas Nick)
7332d2db6b schnorrsig: Add BIP-340 nonce function (Jonas Nick)
7a703fd97d schnorrsig: Init empty experimental module (Jonas Nick)
eabd9bc46a Allow initializing tagged sha256 (Jonas Nick)
6fcb5b845d extrakeys: Add keypair_xonly_tweak_add (Jonas Nick)
58254463f9 extrakeys: Add keypair struct with create, pub and pub_xonly (Jonas Nick)
f0010349b8 Separate helper functions for pubkey_create and seckey_tweak_add (Jonas Nick)
910d9c284c extrakeys: Add xonly_pubkey_tweak_add & xonly_pubkey_tweak_add_test (Jonas Nick)
176bfb1110 Separate helper function for ec_pubkey_tweak_add (Jonas Nick)
4cd2ee474d extrakeys: Add xonly_pubkey with serialize, parse and from_pubkey (Jonas Nick)
47e6618e11 extrakeys: Init empty experimental module (Jonas Nick)
3e08b02e2a Make the secp256k1_declassify argument constant (Jonas Nick)
Pull request description:
This PR implements signing, verification and batch verification as described in [BIP-340](https://github.com/bitcoin/bips/blob/master/bip-0340.mediawiki) in an experimental module named `schnorrsig`. It includes the test vectors and a benchmarking tool.
This PR also adds a module `extrakeys` that allows [BIP-341](https://github.com/bitcoin/bips/blob/master/bip-0341.mediawiki)-style key tweaking.
(Adding ChaCha20 as a CSPRNG and batch verification was moved to PR #760).
In order to enable the module run `./configure` with `--enable-experimental --enable-module-schnorrsig`.
Based on apoelstra's work.
ACKs for top commit:
gmaxwell:
ACK f431b3f28a (exactly matches the previous post-fixup version which I have already reviewed and tested)
sipa:
ACK f431b3f28a
real-or-random:
ACK f431b3f28a careful code review
Tree-SHA512: e15e849c7bb65cdc5d7b1d6874678e275a71e4514de9d5432ec1700de3ba92aa9f381915813f4729057af152d90eea26aabb976ed297019c5767e59cf0bbc693
47a7b8382f Clear field elements when writing infinity (Elichai Turkel)
61d1ecb028 Added test with additions resulting in infinity (Elichai Turkel)
Pull request description:
Currently if `secp256k1_gej_add_var` / `secp256k1_gej_add_ge_var` /` secp256k1_gej_add_zinv_var` receive `P + (-P)` it will set `gej->infinity = 1` but doesn't call initialize the field elements.
Notice that this is the only branch in the function that results in an uninitialized output.
By using `secp256k1_gej_set_infinity()` it will set the field elements to zero while also setting the infinity flag.
I also added a test that fails with valgrind on current master but passes with the fix.
EDIT: This isn't a bug or something necessary, I just personally found this helpful.
ACKs for top commit:
real-or-random:
ACK 47a7b8382f
Tree-SHA512: cdc2efc242a1b04b4f081183c07d4b2602cdba705e6b30b548df4e115e54fb97691f4b1a28f142f02d5e523c020721337a297b17d732acde147b910f5c53bd0a
8bc6aeffa9 Add SHA256 selftest (Pieter Wuille)
5e5fb28b4a Use additional system macros to figure out endianness (Pieter Wuille)
Pull request description:
These are all the architecture macros I could find with known endianness. Use those as a fallback when __BYTE_ORDER__ isn't available.
See https://github.com/bitcoin-core/secp256k1/pull/787#issuecomment-673764652
It also adds a SHA256 selftest, so that improperly overriding the endianness detection will be detected at runtime.
ACKs for top commit:
real-or-random:
ACK 8bc6aeffa9 I read the diff, and tested that the self-test passes/fails with/without the correct endianness setting
gmaxwell:
ACK 8bc6aeffa9 looks good and I also ran the tests on MIPS-BE and verified that forcing it to LE makes the runtime test fail.
Tree-SHA512: aca4cebcd0715dcf5b58f5763cb4283af238987f43bd83a650e38e127f348131692b2eed7ae5b2ae96046d9b971fc77c6ab44467689399fe470a605c3458ecc5
bceefd6547 Add test logs to gitignore (Jake Rawsthorne)
Pull request description:
Was just running the tests for https://github.com/bitcoin-core/secp256k1/pull/558 and noticed these logs weren't ignored
ACKs for top commit:
real-or-random:
ACK bceefd6547
sipa:
ACK bceefd6547
Tree-SHA512: 690906bc80abc547e1ef78d8654900c2f4054fd8cb8c2e0a6f6b95a5875930b8e1e3a69a5dca86b198e4a2601788f584c8b2ff6f5a85da230b12954e07aeff37
60f7f2de5d Don't assume that ALIGNMENT > 1 in tests (Tim Ruffing)
ada6361dec Use ROUND_TO_ALIGN in scratch_create (Jonas Nick)
8ecc6ce50e Add check preventing rounding to alignment from wrapping around in scratch_alloc (Jonas Nick)
4edaf06fb0 Add check preventing integer multiplication wrapping around in scratch_max_allocation (Jonas Nick)
Pull request description:
This PR increases the general robustness of scratch spaces. It does not fix an existing vulnerability because scratch spaces aren't used anywhere in master. Additionally, it must be prevented anyway that an attacker has (indirect) control over the arguments touched in this PR.
ACKs for top commit:
sipa:
ACK 60f7f2de5d
Tree-SHA512: ecdd794b55a01d1d6d24098f3abff34cb8bb6f33737ec4ec93714aa631c9d397b213cc3603a916ad79f4b09d6b2f8973bf87fc07b81b25a530cc72c4dbafaba9
1c325199d5 Remove the extremely outdated TODO file. (Gregory Maxwell)
Pull request description:
This had two things in it-- tests for the scalar/field code and
constant time signing and keygen.
The signing and keygen have been thoroughly constant time for years
and there are now powerful tests to verify it... no further work
on constant-time is needed at least on ordinary platforms (other
sidechannels-- sure).
The scalar and field code have extensive tests. They could use
better static test vectors but they're well tested.
TODOs for the project are currently better documented on github
right now. This file could return in the future with current
info, if needed.
ACKs for top commit:
real-or-random:
ACK 1c325199d5
Tree-SHA512: 65c730ad2816b28991cdb74df6da4671abe76a74a0d0b306f13612b4bbe9b54f9a623b18fc288e0ec13572d9fdbab6f376ce7aafc9fe601644239629b84fb15c
This had two things in it-- tests for the scalar/field code and
constant time signing and keygen.
The signing and keygen have been thoroughly constant time for years
and there are now powerful tests to verify it... no further work
on constant-time is needed at least on ordinary platforms (other
sidechannels-- sure).
The scalar and field code have extensive tests. They could use
better static test vectors but they're well tested.
TODOs for the project are currently better documented on github
right now. This file could return in the future with current
info, if needed.
7c068998ba Compile-time check assumptions on integer types (Pieter Wuille)
02b6c87b52 Add support for (signed) __int128 (Pieter Wuille)
Pull request description:
A compile-time check is implemented in a new `src/assumptions.h` which verifies several aspects that are implementation-defined in C:
* size of bytes
* conversion between unsigned and (negative) signed types
* right-shifts of negative signed types.
ACKs for top commit:
gmaxwell:
ACK 7c068998ba
real-or-random:
ACK 7c068998ba code review and tested
Tree-SHA512: 3903251973681c88d64d4af0f6cb40fde11eb436804c5b6202c3715b78b1a48bcb287f601b394fd0b503437e3832ba011885e992fe65098b33edc430d9b1f67d
