Crate bp256 

RustCrypto: Brainpool P-256 elliptic curves

Brainpool P-256 (brainpoolP256r1 and brainpoolP256t1) elliptic curve types implemented in terms of traits from the elliptic-curve crate.

Documentation

License

All crates licensed under either of

• Apache License, Version 2.0
• MIT license

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.

Backends

This crate has support for two different field arithmetic backends which can be selected using cfg(bp256_backend), e.g. to select the bigint backend:

$ RUSTFLAGS='--cfg bp256_backend="bigint"' cargo test

Or it can be set through .cargo/config:

[build]
rustflags = ['--cfg', 'bp256_backend="bigint"']

The available backends are:

• bigint: experimental backend provided by crypto-bigint. May offer better performance in some cases along with smaller code size, but might also have bugs.
• fiat (default): formally verified implementation synthesized by fiat-crypto which should be correct for all inputs (though there’s a possibility of bugs in the code which glues to it)

Re-exports

pub use crate::r1::BrainpoolP256r1;

pub use crate::t1::BrainpoolP256t1;

pub use elliptic_curve;

pub use elliptic_curve::pkcs8;pkcs8

Modules

r1

brainpoolP256r1 elliptic curve: verifiably pseudo-random variant

t1

brainpoolP256t1 elliptic curve: twisted variant

Structs

Scalararithmetic

Element in the brainpoolP256 scalar field modulo n

Type Aliases

FieldBytes

Byte representation of a base/scalar field element of a given curve.

U256

256-bit unsigned big integer.