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README.md

babyjubjub-rs

BabyJubJub elliptic curve implementation in Rust. A twisted edwards curve embedded in the curve of BN128/BN256.

BabyJubJub curve explanation: https://medium.com/zokrates/efficient-ecc-in-zksnarks-using-zokrates-bd9ae37b8186

Uses:

Poseidon hash function https://github.com/arnaucube/poseidon-rs

Compatible with the BabyJubJub implementations in:

Go, from https://github.com/iden3/go-iden3-crypto
circom & javascript, from https://github.com/iden3/circomlib

Warning

Doing this in my free time to get familiar with Rust, do not use in production.

point addition
point scalar multiplication
eddsa keys generation
eddsa signature
eddsa signature verification
{point, pk, signature} compress&decompress parsers

References

BabyJubJub curve explanation: https://medium.com/zokrates/efficient-ecc-in-zksnarks-using-zokrates-bd9ae37b8186
- C++ & Explanation https://github.com/barryWhiteHat/baby_jubjub
  - C++ https://github.com/barryWhiteHat/baby_jubjub_ecc
- Javascript & Circom: https://github.com/iden3/circomlib
- Go https://github.com/iden3/go-iden3-crypto
JubJub curve explanation: https://z.cash/technology/jubjub/
- Rust: https://github.com/zkcrypto/jubjub
- Python: https://github.com/daira/jubjub