Implementation of Ethereum 32-byte digests for Rust.

This crate provides a Digest type for representing Ethereum 32-byte digests.

Additionally it includes macros for digest constants, both from hexidecimal strings, but also by compile-time Keccak-256 hashing inputs. Under the hood, they are implemented with const fn and do not use procedural macros.

Usage

Just add a dependency to your Cargo.toml:

[dependencies]
ethdigest = "*"

For complete documentation checkout docs.rs.

lib.rs:

Implementation of Ethereum digest and hashing for Rust.

This crate provides a Digest type for representing an Ethereum 32-byte digest as well as various Keccak-256 hashing utilities for computing them.

Macros

There are a couple of exported macros for creating compile-time digest constants:

• digest!: hexadecimal constant
• keccak!: compute constant from a pre-image

Under the hood, they are implemented with const fn and do not use procedural macros.

Features

• default std: Additional integration with Rust standard library types. Notably, this includes std::error::Error implementation on the ParseDigestError and conversions from Vec<u8>.
• serde: Serialization traits for the serde crate. Note that the implementation is very much geared towards JSON serialization with serde_json.
• sha3: Use the Rust Crypto Keccak-256 implementation (provided by the sha3 crate) instead of the built-in one. Note that the keccak! macro will always use the built-in Keccak-256 implementation for computing digests, as sha3 does not expose a const fn API.