e1f6e41757
* refactor: generalize ExpressionMid
* refactor: move ConstraintSystem::from(ConstraintSystemV2Backend) to backend
* refactor: generalize Expression type
* feat: define ExpressionMid as an alias
* refactor: rename ConstraintSystemV2Back to ConstraintSystemMid, GateV2Back to GateMid
* refactor: use ConstraintSystemBack in halo2_backend
* fix: warnings
* refactor: simplify Query type
* feat(backend): rewrite pk/vk serialization
- Rewrite VerifyingKey and ProvingKey methods in terms of the
ConstraintSystemBack so that the backend becomes independent of the
Circuit trait (which belongs to the frontend)
- Add `vk_read` and `pk_read` legacy functions in halo2_proofs for
compatiblity.
- Split the implementation of converting selectors to fixed columns into
two parts:
- One part just converts the ConstraintSystem, transforming the
selectors into fixed columns (compressed and direct versions)
- The other part transforms the assignments of selector columns into
assignments of fixed columns based on the mappings calculated in
part one.
* feat: remove feature circuit-params from halo2_backend
* wip: clean up common+backend
* wip: clean up frontend
* wip: clean common plonk folder
* refactor: move Error to frontend
* refactor: move Error to backend
* refactor: clean up error types
* fix: use errors instead of temporary panics
* feat: annotate columns in test
* fix: remove unnecessary pub, set correct SelectorsToFixed.compressed value, add safety check
In selectors_to_fixed_compressed and selectors_to_fixed_direct add
safety check via the ConstraintSystem.selectors_to_fixed status field
such that the methods can only be called once. Calling them multiple
times would lead to an invalid ConstraintSystem with unused duplicated
fixed columns.
* fix: ponk_api unit tests
* fix: clippy warnings, common dependencies
* fix: remove old TODO
* chore: bump VK version
* chore: remove unnecessary code
* chore: remove virtual variable rules in middleware Expression
* chore: remove unused evaluate_lazy, deprecate directly_convert_selectors_to_fixed
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||
|---|---|---|
| .github | ||
| book | ||
| halo2 | ||
| halo2_backend | ||
| halo2_common | ||
| halo2_frontend | ||
| halo2_middleware | ||
| halo2_proofs | ||
| .gitignore | ||
| COPYING.md | ||
| Cargo.toml | ||
| LICENSE-APACHE | ||
| LICENSE-MIT | ||
| README.md | ||
| rust-toolchain | ||
README.md
halo2 
Documentation
For experimental features privacy-scaling-explorations/halo2 fork adds, please refer to experimental-features.md.
Minimum Supported Rust Version
Requires Rust 1.65.0 or higher.
Minimum supported Rust version can be changed in the future, but it will be done with a minor version bump.
Controlling parallelism
halo2 currently uses rayon for parallel computation. The RAYON_NUM_THREADS environment variable can be used to set the number of threads.
When compiling to WASM-targets, notice that since version 1.7, rayon will fallback automatically (with no need to handle features) to require getrandom in order to be able to work. For more info related to WASM-compilation.
See: Rayon: Usage with WebAssembly for more
License
Licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.