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release: Prepare for 0.4.0 #1415

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Sep 4, 2023
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release: Prepare for 0.4.0 #1415

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d9a8506
changelog: Catch up in preparation of release
real-or-random Sep 4, 2023
1633980
release: Prepare for 0.4.0
real-or-random Sep 4, 2023
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12 changes: 10 additions & 2 deletions CHANGELOG.md
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Expand Up @@ -5,18 +5,25 @@ All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]
## [0.4.0] - 2023-09-04

#### Added
- New module `ellswift` implements ElligatorSwift encoding for public keys and x-only Diffie-Hellman key exchange for them.
ElligatorSwift permits representing secp256k1 public keys as 64-byte arrays which cannot be distinguished from uniformly random. See:
- Header file `include/secp256k1_ellswift.h` which defines the new API.
- Document `doc/ellswift.md` which explains the mathematical background of the scheme.
- The [paper](https://eprint.iacr.org/2022/759) on which the scheme is based.
- We now test the library with unreleased development snapshots of GCC and Clang. This gives us an early chance to catch miscompilations and constant-time issues introduced by the compiler (such as those that led to the previous two releases).

#### Fixed
- Fixed symbol visibility in Windows DLL builds, where three internal library symbols were wrongly exported.
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#### Changed
- When consuming libsecp256k1 as a static library on Windows, the user must now define the `SECP256K1_STATIC` macro before including `secp256k1.h`.

#### ABI Compatibility
This release is backward compatible with the ABI of 0.3.0, 0.3.1, and 0.3.2. Symbol visibility is now believed to be handled properly on supported platforms and is now considered to be part of the ABI. Please report any improperly exported symbols as a bug.

## [0.3.2] - 2023-05-13
We strongly recommend updating to 0.3.2 if you use or plan to use GCC >=13 to compile libsecp256k1. When in doubt, check the GCC version using `gcc -v`.

Expand Down Expand Up @@ -97,7 +104,8 @@ This version was in fact never released.
The number was given by the build system since the introduction of autotools in Jan 2014 (ea0fe5a5bf0c04f9cc955b2966b614f5f378c6f6).
Therefore, this version number does not uniquely identify a set of source files.

[unreleased]: https://github.com/bitcoin-core/secp256k1/compare/v0.3.2...HEAD
[unreleased]: https://github.com/bitcoin-core/secp256k1/compare/v0.4.0...HEAD
[0.4.0]: https://github.com/bitcoin-core/secp256k1/compare/v0.3.2...v0.4.0
[0.3.2]: https://github.com/bitcoin-core/secp256k1/compare/v0.3.1...v0.3.2
[0.3.1]: https://github.com/bitcoin-core/secp256k1/compare/v0.3.0...v0.3.1
[0.3.0]: https://github.com/bitcoin-core/secp256k1/compare/v0.2.0...v0.3.0
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8 changes: 4 additions & 4 deletions CMakeLists.txt
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Expand Up @@ -11,7 +11,7 @@ project(libsecp256k1
# The package (a.k.a. release) version is based on semantic versioning 2.0.0 of
# the API. All changes in experimental modules are treated as
# backwards-compatible and therefore at most increase the minor version.
VERSION 0.3.3
VERSION 0.4.0
DESCRIPTION "Optimized C library for ECDSA signatures and secret/public key operations on curve secp256k1."
HOMEPAGE_URL "https://github.com/bitcoin-core/secp256k1"
LANGUAGES C
Expand All @@ -34,9 +34,9 @@ endif()
# https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
# All changes in experimental modules are treated as if they don't affect the
# interface and therefore only increase the revision.
set(${PROJECT_NAME}_LIB_VERSION_CURRENT 2)
set(${PROJECT_NAME}_LIB_VERSION_REVISION 3)
set(${PROJECT_NAME}_LIB_VERSION_AGE 0)
set(${PROJECT_NAME}_LIB_VERSION_CURRENT 3)
set(${PROJECT_NAME}_LIB_VERSION_REVISION 0)
set(${PROJECT_NAME}_LIB_VERSION_AGE 1)

set(CMAKE_C_STANDARD 90)
set(CMAKE_C_EXTENSIONS OFF)
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12 changes: 6 additions & 6 deletions configure.ac
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Expand Up @@ -4,18 +4,18 @@ AC_PREREQ([2.60])
# the API. All changes in experimental modules are treated as
# backwards-compatible and therefore at most increase the minor version.
define(_PKG_VERSION_MAJOR, 0)
define(_PKG_VERSION_MINOR, 3)
define(_PKG_VERSION_PATCH, 3)
define(_PKG_VERSION_IS_RELEASE, false)
define(_PKG_VERSION_MINOR, 4)
define(_PKG_VERSION_PATCH, 0)
define(_PKG_VERSION_IS_RELEASE, true)

# The library version is based on libtool versioning of the ABI. The set of
# rules for updating the version can be found here:
# https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
# All changes in experimental modules are treated as if they don't affect the
# interface and therefore only increase the revision.
define(_LIB_VERSION_CURRENT, 2)
define(_LIB_VERSION_REVISION, 3)
define(_LIB_VERSION_AGE, 0)
define(_LIB_VERSION_CURRENT, 3)
define(_LIB_VERSION_REVISION, 0)
define(_LIB_VERSION_AGE, 1)

AC_INIT([libsecp256k1],m4_join([.], _PKG_VERSION_MAJOR, _PKG_VERSION_MINOR, _PKG_VERSION_PATCH)m4_if(_PKG_VERSION_IS_RELEASE, [true], [], [-dev]),[https://github.com/bitcoin-core/secp256k1/issues],[libsecp256k1],[https://github.com/bitcoin-core/secp256k1])

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