Noah: A Cryptographic Library for Privacy Assets
Noah is a Rust library that implements various cryptographic primitives for privacy assets. It implements two constructions:
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Maxwell construction. In 2015, a renowned blockchain developer Gregory Maxwell presented a construction of confidential transactions (CT) for a UTXO chain. We implemented it with:
- Secp256k1 or Ed25519 for digital signatures
- The Ristretto group over Curve25519 for Pedersen commitments
- Bulletproofs over Curve25519
-
Zerocash construction. Improved over a prior protocol Zerocoin, the Zerocash construction, firstly proposed by Ben-Sasson, Chiesa, Garman, Green, Miers, Tromer, and Virza and improved subsequently by the Zcash Foundation and Electric Coin Company (ECC), is another privacy-preserving transfer protocol over a UTXO chain. We implemented it with:
- Secp256k1 or Ed25519 (incoming) for digital signatures
- An inhouse variant of TurboPlonk with various optimization tricks
- The European technique for efficient memory in zk-SNARK, using the Anemoi-Jive hashes
Thanks to all the people who already contributed!
Licensing
The primary license for Noah is the Business Source License 1.1 (BUSL-1.1), see LICENSE.