zk-proofs for substrate

This library supports for using zk-SNARKs on substrate and is implemented as an extension of librustzcash.

Primary purpose of this library is to be used with zero-chain. However, it is designed to be as flexible as possible and might be suited well for any other projects to use zk-SNARKs on Substrate.

In order to use the bellman-based zk-SNARKS on Substrate, following features are added to this library.

• no_std compatible
• some attributes (like Encode, Decode, etc...)for binary serialization and deserialization. (These codec is implemented as a parity-codec.)
• Rng fixes to be compatible with wasm.

Security Warnings

These libraries are currently under development and have not been fully-reviewed.

License

All code in this workspace is 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.