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Make the Keccak permutation public, as it's useful for more than SHA-3 (kMAC, SHAKE, TurboSHAKE, TupleHash, etc). Our Keccak implementation was accepting f as a comptime parameter, but always used 64-bit words and 200 byte states, so it actually didn't work with anything besides f=1600. That has been fixed. The ability to use reduced-round versions was also added in order to support M14 and K12. The state was constantly converted back and forth between bytes and words, even though only a part of the state is actually used for absorbing and squeezing bytes. It was changed to something similar to the other permutations we have, so we can avoid extra copies, and eventually add vectorized implementations. In addition, the SHAKE extendable output function (XOF) was added (SHAKE128, SHAKE256). It is required by newer schemes, such as the Kyber post-quantum key exchange mechanism, whose implementation is currently blocked by SHAKE missing from our standard library. Breaking change: `Keccak_256` and `Keccak_512` were renamed to `Keccak256` and `Keccak512` for consistency with all other hash functions.
A general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
Resources
- Introduction
- Download & Documentation
- Chapter 0 - Getting Started | ZigLearn.org
- Community
- Contributing
- Code of Conduct
- Frequently Asked Questions
- Community Projects
Installation
- download a pre-built binary
- install from a package manager
- build from source
- bootstrap zig for any target
License
The ultimate goal of the Zig project is to serve users. As a first-order effect, this means users of the compiler, helping programmers to write better software. Even more important, however, are the end-users.
Zig is intended to be used to help end-users accomplish their goals. Zig should be used to empower end-users, never to exploit them financially, or to limit their freedom to interact with hardware or software in any way.
However, such problems are best solved with social norms, not with software licenses. Any attempt to complicate the software license of Zig would risk compromising the value Zig provides.
Therefore, Zig is available under the MIT (Expat) License, and comes with a humble request: use it to make software better serve the needs of end-users.
This project redistributes code from other projects, some of which have other licenses besides MIT. Such licenses are generally similar to the MIT license for practical purposes. See the subdirectories and files inside lib/ for more details.