#crypto #ecdsa #ed25519 #signature #signing

no-std signature

Traits for cryptographic signature algorithms (e.g. ECDSA, Ed25519)

20 releases (10 stable)

1.5.0 Jan 5, 2022
1.4.0 Oct 21, 2021
1.3.1 Jun 29, 2021
1.3.0 Jan 6, 2021
0.0.0 Oct 30, 2018

#133 in Cryptography

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Used in 1,355 crates (45 directly)

Apache-2.0 OR MIT

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RustCrypto: Digital Signature Algorithms

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

This crate contains traits which provide generic, object-safe APIs for generating and verifying digital signatures.

Used by the ecdsa and ed25519 crates, with forthcoming support in the rsa crate.

See also the Signatory project for trait wrappers for using these traits with many popular Rust cryptography crates, including ed25519-dalek, ring, secp256k1-rs, and sodiumoxide.


Minimum Supported Rust Version

Rust 1.41 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
  • The off-by-default features derive-preview and digest-preview are unstable "preview" features which are also considered exempt from SemVer. Breaking changes to these features will, like MSRV, be done with a minor version bump.


Licensed under either of

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.