General purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof.

All curves reside in the separate crates and implemented using traits from the elliptic-curve crate.

Crates in this repo do not require the standard library (i.e. no_std capable) and can be easily used for bare-metal or WebAssembly programming.

NOTE: Most crates have field/point arithmetic implementations gated under the arithmetic cargo feature as noted in the arithmetic column below:

Name	Curve	arithmetic?	Crates.io	Documentation	Build Status
bign256	bign-curve256v1	✅
bp256	brainpoolP256r1/t1	🚧
bp384	brainpoolP384r1/t1	🚧
k256	secp256k1	✅
p192	NIST P-192	✅
p224	NIST P-224	✅
p256	NIST P-256	✅
p384	NIST P-384	✅
p521	NIST P-521	✅
sm2	SM2	✅

🚧: curve arithmetic implementation under construction

Please see our tracking issue for additional elliptic curves if you are interested in curves beyond the ones listed here.

All crates in this repository support Rust 1.73 or higher.

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

All crates licensed under either of

• Apache License, Version 2.0
• MIT license

at your option.

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.