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8746600eec Merge bitcoin-core/secp256k1#1093: hash: Make code agnostic of endianness 37d36927df tests: Add tests for _read_be32 and _write_be32 912b7ccc44 Merge bitcoin-core/secp256k1#1094: doc: Clarify configure flags for optional modules 55512d30b7 doc: clean up module help text in configure.ac d9d94a9969 doc: mention optional modules in README 616b43dd3b util: Remove endianness detection 8d89b9e6e5 hash: Make code agnostic of endianness d0ad5814a5 Merge bitcoin-core/secp256k1#995: build: stop treating schnorrsig, extrakeys modules as experimental 1ac7e31c5b Merge bitcoin-core/secp256k1#1089: Schnorrsig API improvements 587239dbe3 Merge bitcoin-core/secp256k1#731: Change SHA256 byte counter from size_t to uint64_t f8d9174357 Add SHA256 bit counter tests 7f09d0f311 README: mention that ARM assembly is experimental b8f8b99f0f docs: Fix return value for functions that don't have invalid inputs f813bb0df3 schnorrsig: Adapt example to new API 99e6568fc6 schnorrsig: Rename schnorrsig_sign to schnorsig_sign32 and deprecate fc94a2da44 Use SECP256K1_DEPRECATED for existing deprecated API functions 3db0560606 Add SECP256K1_DEPRECATED attribute for marking API parts as deprecated 80cf4eea5f build: stop treating schnorrsig, extrakeys modules as experimental e0508ee9db Merge bitcoin-core/secp256k1#1090: configure: Remove redundant pkg-config code 21b2ebaf74 configure: Remove redundant pkg-config code 0e5cbd01b3 Merge bitcoin-core/secp256k1#1088: configure: Use modern way to set AR 0d253d52e8 configure: Use modern way to set AR 9b514ce1d2 Add test vector for very long SHA256 messages 8e3dde1137 Simplify struct initializer for SHA256 padding eb28464a8b Change SHA256 byte counter from size_t to uint64_t ac83be33d0 Merge bitcoin-core/secp256k1#1079: configure: Add hidden --enable-dev-mode to enable all the stuff e0838d663d configure: Add hidden --enable-dev-mode to enable all the stuff fabd579dfa configure: Remove redundant code that sets _enable variables 0d4226c051 configure: Use canonical variable prefix _enable consistently 64b34979ed Merge bitcoin-core/secp256k1#748: Add usage examples 7c9502cece Add a copy of the CC0 license to the examples 42e03432e6 Add usage examples to the readme 517644eab1 Optionally compile the examples in autotools, compile+run in travis 422a7cc86a Add a ecdh shared secret example b0cfbcc143 Add a Schnorr signing and verifying example fee7d4bf9e Add an ECDSA signing and verifying example 1253a27756 Merge bitcoin-core/secp256k1#1033: Add _fe_half and use in _gej_add_ge and _gej_double 3ef94aa5ba Merge bitcoin-core/secp256k1#1026: ecdh: Add test computing shared_secret=basepoint with random inputs 3531a43b5b ecdh: Make generator_basepoint test depend on global iteration count c881dd49bd ecdh: Add test computing shared_secret=basepoint with random inputs 077528317d Merge bitcoin-core/secp256k1#1074: ci: Retry brew update a few times to avoid random failures e51ad3b737 ci: Retry `brew update` a few times to avoid random failures b1cb969e8a ci: Revert "Attempt to make macOS builds more reliable" 5dcc6f8dbd Merge bitcoin-core/secp256k1#1069: build: Replace use of deprecated autoconf macro AC_PROG_CC_C89 59547943d6 Merge bitcoin-core/secp256k1#1072: ci: Attempt to make macOS builds more reliable 85b00a1c65 Merge bitcoin-core/secp256k1#1068: sage: Fix incompatibility with sage 9.4 ebb1beea78 sage: Ensure that constraints are always fastfracs d8d54859ed ci: Run sage prover on CI 77cfa98dbc sage: Normalize sign of polynomial factors in prover eae75869cf sage: Exit with non-zero status in case of failures d9396a56da ci: Attempt to make macOS builds more reliable e0db3f8a25 build: Replace use of deprecated autoconf macro AC_PROG_CC_C89 e848c3799c Update sage files for new formulae d64bb5d4f3 Add fe_half tests for worst-case inputs b54d843eac sage: Fix printing of errors 4eb8b932ff Further improve doubling formula using fe_half 557b31fac3 Doubling formula using fe_half 2cbb4b1a42 Run more iterations of run_field_misc 9cc5c257ed Add test for secp256k1_fe_half 925f78d55e Add _fe_half and use in _gej_add_ge e108d0039c sage: Fix incompatibility with sage 9.4 d8a2463246 Merge bitcoin-core/secp256k1#899: Reduce stratch space needed by ecmult_strauss_wnaf. 0a40a4861a Merge bitcoin-core/secp256k1#1049: Faster fixed-input ecmult tests 070e772211 Faster fixed-input ecmult tests c8aa516b57 Merge bitcoin-core/secp256k1#1064: Modulo-reduce msg32 inside RFC6979 nonce fn to match spec. Fixes #1063 b797a500ec Create a SECP256K1_ECMULT_TABLE_VERIFY macro. a731200cc3 Replace ECMULT_TABLE_GET_GE_STORAGE macro with a function. fe34d9f341 Eliminate input_pos state field from ecmult_strauss_wnaf. 0397d00ba0 Eliminate na_1 and na_lam state fields from ecmult_strauss_wnaf. 7ba3ffcca0 Remove the unused pre_a_lam allocations. b3b57ad6ee Eliminate the pre_a_lam array from ecmult_strauss_wnaf. ae7ba0f922 Remove the unused prej allocations. e5c18892db Eliminate the prej array from ecmult_strauss_wnaf. c9da1baad1 Move secp256k1_fe_one to field.h 45f37b6506 Modulo-reduce msg32 inside RFC6979 nonce fn to match spec. Fixes #1063. a1102b1219 Merge bitcoin-core/secp256k1#1029: Simpler and faster ecdh skew fixup e82144edfb Fixup skew before global Z fixup 40b624c90b Add tests for _gej_cmov 8c13a9bfe1 ECDH skews by 0 or 1 1515099433 Simpler and faster ecdh skew fixup 39a36db94a Merge bitcoin-core/secp256k1#1054: tests: Fix test whose result is implementation-defined a310e79ee5 Merge bitcoin-core/secp256k1#1052: Use xoshiro256++ instead of RFC6979 for tests 423b6d19d3 Merge bitcoin-core/secp256k1#964: Add release-process.md 9281c9f4e1 Merge bitcoin-core/secp256k1#1053: ecmult: move `_ecmult_odd_multiples_table_globalz_windowa` 77a19750b4 Use xoshiro256++ PRNG instead of RFC6979 in tests 5f2efe684e secp256k1_testrand_int(2**N) -> secp256k1_testrand_bits(N) 05e049b73c ecmult: move `_ecmult_odd_multiples_table_globalz_windowa` 3d7cbafb5f tests: Fix test whose result is implementation-defined 3ed0d02bf7 doc: add CHANGELOG template 6f42dc16c8 doc: add release_process.md 0bd3e4243c build: set library version to 0.0.0 explicitly b4b02fd8c4 build: change libsecp version from 0.1 to 0.1.0-pre 09971a3ffd Merge bitcoin-core/secp256k1#1047: ci: Various improvements 0b83b203e1 Merge bitcoin-core/secp256k1#1030: doc: Fix upper bounds + cleanup in field_5x52_impl.h comment 1287786c7a doc: Add comment to top of field_10x26_impl.h 58da5bd589 doc: Fix upper bounds + cleanup in field_5x52_impl.h comment b39d431aed Merge bitcoin-core/secp256k1#1044: Add another ecmult_multi test b4ac1a1d5f ci: Run valgrind/memcheck tasks with 2 CPUs e70acab601 ci: Use Cirrus "greedy" flag to use idle CPU time when available d07e30176e ci: Update brew on macOS 22382f0ea0 ci: Test different ecmult window sizes a69df3ad24 Merge bitcoin-core/secp256k1#816: Improve checks at top of _fe_negate methods 22d25c8e0a Add another ecmult_multi test 515e7953ca Improve checks at top of _fe_negate methods 26a022a3a0 ci: Remove STATICPRECOMPUTATION 10461d8bd3 precompute_ecmult: Always compute all tables up to default WINDOW_G be6944ade9 Merge bitcoin-core/secp256k1#1042: Follow-ups to making all tables fully static e05da9e480 Fix c++ build c45386d994 Cleanup preprocessor indentation in precompute{,d}_ecmult{,_gen} 19d96e15f9 Split off .c file from precomputed_ecmult.h 1a6691adae Split off .c file from precomputed_ecmult_gen.h bb36331412 Simplify precompute_ecmult_print_* 38cd84a0cb Compute ecmult tables at runtime for tests_exhaustive e458ec26d6 Move ecmult table computation code to separate file fc1bf9f15f Split ecmult table computation and printing 31feab053b Rename function secp256k1_ecmult_gen_{create_prec -> compute}_table 725370c3f2 Rename ecmult_gen_prec -> ecmult_gen_compute_table 075252c1b7 Rename ecmult_static_pre_g -> precomputed_ecmult 7cf47f72bc Rename ecmult_gen_static_prec_table -> precomputed_ecmult_gen f95b8106d0 Rename gen_ecmult_static_pre_g -> precompute_ecmult bae77685eb Rename gen_ecmult_gen_static_prec_table -> precompute_ecmult_gen git-subtree-dir: src/secp256k1 git-subtree-split: 8746600eec5e7fcd35dabd480839a3a4bdfee87b
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Bitcoin Core integration/staging tree
For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.
Further information about Bitcoin Core is available in the doc folder.
What is Bitcoin?
Bitcoin is an experimental digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Bitcoin Core is the name of open source software which enables the use of this currency.
For more information read the original Bitcoin whitepaper.
License
Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/MIT.
Development Process
The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be
completely stable. Tags are created
regularly from release branches to indicate new official, stable release versions of Bitcoin Core.
The https://github.com/bitcoin-core/gui repository is used exclusively for the development of the GUI. Its master branch is identical in all monotree repositories. Release branches and tags do not exist, so please do not fork that repository unless it is for development reasons.
The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.
Testing
Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.
Automated Testing
Developers are strongly encouraged to write unit tests for new code, and to
submit new unit tests for old code. Unit tests can be compiled and run
(assuming they weren't disabled in configure) with: make check. Further details on running
and extending unit tests can be found in /src/test/README.md.
There are also regression and integration tests, written
in Python.
These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py
The CI (Continuous Integration) systems make sure that every pull request is built for Windows, Linux, and macOS, and that unit/sanity tests are run automatically.
Manual Quality Assurance (QA) Testing
Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.
Translations
Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.
Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.
Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.