add libsodium

[smanders]

• Site: https://doc.libsodium.org/
• Repo: https://github.com/jedisct1/libsodium
• Version: 1.0.18
• Functionality: Provides some basic encryption support, including Curve25519, upon which CurveZMQ is built
• Need: VANTAGE 4.0 internal message broker will be based on ZeroMQ & needs encryption & authentication. CurveZMQ is the most straight-forward option for encryption and authentication with ZeroMQ.
• Alternatives: Could manually apply TLS encryption to ZeroMQ sockets using OpenSSL library but likely to cost significantly more time to develop. Similar for LDAP authentication.
• Source code availability: Yes
• Portability: Windows (MSVC 2017 & 2019, MinGW), Unix-like systems
• Support: Actively being updated (6 commits to master in April 2021). List of projects using it here (includes Discord, Apache Tuweni)
• Origin: Primary contributor (jedisct1) located in France
• Known Vulnerabilities: none (snyk.io, reddit comments, empty security advisories list)
• License: ISC (Internet Systems Consortium) – functionality equivalent to MIT license

[smanders]

the latest release of libsodium was 1.0.18 on 2019.05.30

• https://github.com/jedisct1/libsodium/tags
• https://download.libsodium.org/libsodium/releases/

the docs recommend using the stable branch https://doc.libsodium.org/installation#stable-branch

there have been a lot of changes made to the stable branch since the 1.0.18 release https://github.com/jedisct1/libsodium/compare/1.0.18...stable

my current thought is to branch off the current head of the stable branch https://github.com/jedisct1/libsodium/commits/stable, the 2021.06.17 commit https://github.com/jedisct1/libsodium/commit/95673e5b51e750c5eee1aecd935cbfc5791d741b

[smanders]

libsodium with cmake

• https://github.com/myd7349/libsodium.cmake
  • https://github.com/myd7349/libsodium.cmake/blob/master/CMakeLists.txt
  • https://github.com/myd7349/libsodium.cmake/blob/wip/CMakeLists.txt
  • https://github.com/myd7349/libsodium.cmake/compare/master...wip
• https://github.com/robinlinden/libsodium-cmake
  • https://github.com/robinlinden/libsodium-cmake/blob/master/CMakeLists.txt
  • https://github.com/robinlinden/libsodium-cmake/blob/master/test/CMakeLists.txt
• https://github.com/ctrix/libsodium-cmake
• https://github.com/Cyberunner23/libsodium-CMake

[smanders]

completed with commit ([release]) referenced above

[smanders]

patch (cmake build support) https://github.com/jedisct1/libsodium/compare/95673e5b51e750c5eee1aecd935cbfc5791d741b...smanders:xp21.06.17