Crate ecdsa

Elliptic Curve Digital Signature Algorithm (ECDSA) as specified in FIPS 186-4 (Digital Signature Standard)

About

This crate provides generic ECDSA support which can be used in the following ways:

• Generic implementation of ECDSA usable with the following crates:
  • k256 (secp256k1)
  • p256 (NIST P-256)
• ECDSA signature types alone which can be used to provide interoperability between other crates that provide an ECDSA implementation:
  • p384 (NIST P-384)

Any crates which provide an implementation of ECDSA for a particular elliptic curve can leverage the types from this crate, along with the k256, p256, and/or p384 crates to expose ECDSA functionality in a generic, interoperable way by leveraging the Signature type with in conjunction with the signature::Signer and signature::Verifier traits.

For example, the ring-compat crate implements the signature::Signer and signature::Verifier traits in conjunction with the p256::ecdsa::Signature and p384::ecdsa::Signature types to wrap the ECDSA implementations from ring in a generic, interoperable API.

Minimum Supported Rust Version

Rust 1.47 or higher.

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

Re-exports

pub use elliptic_curve;
pub use signature;

Modules

der	der Support for ECDSA signatures encoded as ASN.1 DER.
dev	dev Development-related functionality.
hazmat	hazmat Low-level ECDSA primitives.
rfc6979	sign Support for computing deterministic ECDSA ephemeral scalar (k).

Macros

new_signing_test	dev Define ECDSA signing test.
new_verification_test	dev Define ECDSA verification test.
new_wycheproof_test	dev Define a Wycheproof verification test.

Structs

EncodedPoint	SEC1 encoded curve point.
Error	Signature errors.
Signature	ECDSA signature (fixed-size). Generic over elliptic curve types.
SigningKey	sign ECDSA signing key. Generic over elliptic curves.
VerifyingKey	verify ECDSA verification key (i.e. public key). Generic over elliptic curves.

Traits

Curve	Marker trait for elliptic curves in short Weierstrass form.
NormalizeLow	Normalize a scalar (i.e. ECDSA S) to the lower half the field, as described in BIP 0062: Dealing with Malleability.

Type Definitions

SignatureBytes	Fixed-size byte array containing an ECDSA signature
SignatureSize	Size of a fixed sized signature for the given elliptic curve.