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4 years ago
  1. #![cfg_attr(not(feature = "std"), no_std)]
  2. #![deny(
  3. warnings,
  4. unused,
  5. future_incompatible,
  6. nonstandard_style,
  7. rust_2018_idioms
  8. )]
  9. #![forbid(unsafe_code)]
  10. //! This library implements the BLS12_377 curve generated in [[BCGMMW20, “Zexe”]](https://eprint.iacr.org/2018/962).
  11. //! The name denotes that it is a Barreto--Lynn--Scott curve of embedding degree 12,
  12. //! defined over a 377-bit (prime) field. The main feature of this curve is that
  13. //! both the scalar field and the base field are highly 2-adic.
  14. //! (This is in contrast to the BLS12_381 curve for which only the scalar field is highly 2-adic.)
  15. //!
  16. //!
  17. //! Curve information:
  18. //! * Base field: q = 258664426012969094010652733694893533536393512754914660539884262666720468348340822774968888139573360124440321458177
  19. //! * Scalar field: r = 8444461749428370424248824938781546531375899335154063827935233455917409239041
  20. //! * valuation(q - 1, 2) = 46
  21. //! * valuation(r - 1, 2) = 47
  22. //! * G1 curve equation: y^2 = x^3 + 1
  23. //! * G2 curve equation: y^2 = x^3 + B, where
  24. //! * B = Fq2(0, 155198655607781456406391640216936120121836107652948796323930557600032281009004493664981332883744016074664192874906)
  25. #[cfg(feature = "curve")]
  26. mod curves;
  27. mod fields;
  28. #[cfg(feature = "r1cs")]
  29. pub mod constraints;
  30. #[cfg(feature = "curve")]
  31. pub use curves::*;
  32. pub use fields::*;