Crate bign256

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§RustCrypto: BIGN P-256 (bign-curve256v1) elliptic curve

crate Docs Build Status Apache2/MIT licensed Rust Version Project Chat

Pure Rust implementation of the BIGN P-256 (a.k.a. bign-curve256v1) elliptic curve with support for ECDSA signing/verification, and general purpose curve arithmetic support implemented in terms of traits from the elliptic-curve crate.

Documentation

§⚠️ Security Warning

The elliptic curve arithmetic contained in this crate has never been independently audited!

This crate has been designed with the goal of ensuring that secret-dependent operations are performed in constant time (using the subtle crate and constant-time formulas). However, it has not been thoroughly assessed to ensure that generated assembly is constant time on common CPU architectures.

USE AT YOUR OWN RISK!

§Supported Algorithms

§About BIGN P-256

BIGN P-256 is a Weierstrass curve specified in STB 34.101.45-2013. Also known as bign-curve256v1.

§Minimum Supported Rust Version

Rust 1.65 or higher.

Minimum supported Rust version can be changed in the future, but it will be done with a minor version bump.

§SemVer Policy

  • All on-by-default features of this library are covered by SemVer
  • MSRV is considered exempt from SemVer as noted above

§License

All crates licensed under either of

at your option.

§Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

Re-exports§

pub use arithmetic::AffinePoint;arithmetic
pub use arithmetic::ProjectivePoint;arithmetic
pub use elliptic_curve;
pub use elliptic_curve::pkcs8;pkcs8

Modules§

arithmeticarithmetic
Pure Rust implementation of group operations on bign-curve256v1.
dsadsa
BignP256 Digital Signature Algorithm as defined in STB 34.101.45-2013 § 7.

Structs§

BignP256
BIGN P-256 elliptic curve.
Scalararithmetic
Scalars are elements in the finite field modulo n.

Type Aliases§

CompressedPoint
Compressed SEC1-encoded BIGN P256 curve point.
EncodedPoint
SEC1 encoded point.
FieldBytes
BIGN P-256 field element serialized as bytes.
NonZeroScalararithmetic
Non-zero scalar field element.
PublicKeyarithmetic
BIGN P-256 public key.
SecretKey
BIGN P-256 secret key.
U256
256-bit unsigned big integer.