Hash trait that is object-safe

This crate provides a DynHash trait that can be used in trait objects. Types that implement the standard library's std::hash::Hash trait are automatically usable by a DynHash trait object.

Example

use dyn_hash::DynHash;

trait MyTrait: DynHash {
    /* ... */
}

// Implement std::hash::Hash for dyn MyTrait
dyn_hash::hash_trait_object!(MyTrait);

// Now data structures containing Box<dyn MyTrait> can derive Hash:
#[derive(Hash)]
struct Container {
    trait_object: Box<dyn MyTrait>,
}

Without the dyn-hash crate, a trait trait MyTrait: std::hash::Hash {...} would not be object-safe (dyn MyTrait).

error[E0038]: the trait `MyTrait` cannot be made into an object
 --> src/main.rs:7:12
  |
7 |     let _: &dyn MyTrait;
  |            ^^^^^^^^^^^^ `MyTrait` cannot be made into an object
  |
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
 --> $SYSROOT/lib/rustlib/src/rust/library/core/src/hash/mod.rs
  |
  |     fn hash<H: Hasher>(&self, state: &mut H);
  |        ^^^^ ...because method `hash` has generic type parameters

^{Licensed under either of Apache License, Version 2.0 or MIT license at your option.}
_{Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.}

Generates a unique hash/identifier for a system given a set of parameters.

uniqueid 🔍 Generates a unique hash/identifier for a system given a set of parameters. Example usage use uniqueid; pub fn main() { let data = vec

2 Aug 19, 2022

Left To My Own Devices - NT hash tools

ntcrack Left To My Own Devices - NT cracker A full writeup of how it works is available at the SensePost blog Invocation ./ntcrack input hashlist w

24 Nov 24, 2022

MD5/SHA256 HASH ATTACK IN RUST

hashraccoon Installation Install cargo curl https://sh.rustup.rs -sSf | sh Install the hashraccoon crate cargo install hashraccoon Download the rockyo

3 Nov 5, 2022

Blazing fast Pedersen hash implementation for Node.JS

pedersen-fast Blazing fast Pedersen hash implementation for Node.JS Exposes starknet-crypto's implementation written in Rust as WASM package. Usage np

7 Mar 10, 2023

C++ `std::unique_ptr` that represents each object as an NFT on the Ethereum blockchain

1.9k Dec 28, 2022

Safe, fast, small crypto using Rust

THE SOFTWARE IS PROVIDED "AS IS" AND BRIAN SMITH AND THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES

3k Jan 2, 2023

Usable, easy and safe pure-Rust crypto

orion About Orion is a cryptography library written in pure Rust. It aims to provide easy and usable crypto while trying to minimize the use of unsafe

476 Dec 22, 2022

A safe implementation of the secure remote password authentication and key-exchange protocol (SRP), SRP6a and legacy are as features available.

Secure Remote Password (SRP 6 / 6a) A safe implementation of the secure remote password authentication and key-exchange protocol (SRP version 6a). Ver

10 Nov 3, 2022

A blazing fast, type-safe template engine for Rust.

markup.rs A blazing fast, type-safe template engine for Rust. markup.rs is a template engine for Rust powered by procedural macros which parses the te