Lib.rs

This library implements the Bendersnatch curve, a twisted Edwards curve whose base field is the scalar field of the curve BLS12-381. This allows defining cryptographic primitives that use elliptic curves over the scalar field of the latter curve. This curve was generated by Simon Masson from Anoma, and Antonio Sanso from Ethereum Foundation, and is also known as bandersnatch.

See here for the specification of the curve. There was also a Python implementation here.

Curve information:

• Base field: q = 52435875175126190479447740508185965837690552500527637822603658699938581184513
• Scalar field: r = 13108968793781547619861935127046491459309155893440570251786403306729687672801
• Valuation(q - 1, 2) = 32
• Valuation(r - 1, 2) = 5
• Curve equation: ax^2 + y^2 =1 + dx^2y^2, where
  • a = -5
  • d = 45022363124591815672509500913686876175488063829319466900776701791074614335719