schnorr signatures + musig2 (N/N multisigs)

Simple zig implementation of Schnorr Signatures and MuSig2.

Implementation partially inspired by https://github.com/VictoriaGrasshopper/schnorr_signature

Includes a CLI app for independent/one-time using of schnorr and musig2 signing.

Security considerations

TODO

Installing

1. Run the following command:

zig fetch --save git+https://github.com/aidanaden/schnorr-zig

1. Add the following to build.zig:

const schnorr = b.dependency("schnorr", .{});
exe.root_module.addImport("schnorr", schnorr.module("schnorr"));
exe.root_module.addImport("musig2", schnorr.module("musig2"));

Build

zig build

Usage

TODO

CLI

TODO

Code example

TODO

API

This package exposes two functions: generate and reconstruct.

Generate

TODO

License

Apache-2.0. See the license file.

References

• Reasons for Ristretto255

  • https://loup-vaillant.fr/tutorials/cofactor

• Schnorr

  • https://github.com/VictoriaGrasshopper/schnorr_signature

• MuSig2

  • https://hackmd.io/@XlWbpTTRNaI4BeB7d8qig/BJbt-zlF#Ristretto255
  • https://eprint.iacr.org/2020/1261.pdf

• Curve25519

  • https://martin.kleppmann.com/papers/curve25519.pdf