Modern Rust Cryptography Libraries

This Rust library provides modern cryptographic primitives for a specific proxy re-encryption scheme, which fits the search for a modern crypto library, but it is narrower in scope and does not explicitly mention constant-time operations or security audits.

Sodiumoxide is a Rust binding to libsodium that provides modern, safe cryptographic primitives, fitting your need for a Rust cryptography library with misuse-resistant APIs, though it is deprecated and not a pure Rust implementation.

This repository, tagged with Rust and Cryptography, is a cryptography library written in Rust that fits the intent for a safe, modern Rust cryptography library, although the sparse description does not confirm specific features like constant-time operations or audit status.

rustcrypto/hashes is a pure‑Rust collection of cryptographic hash functions from the RustCrypto project, which fits the request for modern primitives, but its description doesn’t mention misuse‑resistant APIs, constant‑time operations, or an audit, so it covers only part of the sought‑after features.

This library from the Rust Crypto project provides safe, pure-Rust implementations of authenticated encryption algorithms (AEADs) like AES-GCM and ChaCha20Poly1305, fitting the demand for modern, misuse-resistant cryptographic primitives in Rust.

This pure Rust elliptic curve collection from the RustCrypto project fits the search for a safe, modern cryptography library—it provides constant-time implementations of common curves with memory safety, though it covers only elliptic curves rather than a full primitive set.

This repository is a Rust library that implements modern cryptographic signature algorithms (Ed25519, ECDSA) with an emphasis on safe, memory-safe APIs, making it a solid fit for your need for a safe/modern cryptography library — though it is focused on signatures rather than covering all primitives.

This pure-Rust library provides safe, constant-time elliptic curve operations on Curve25519 and Ristretto, fitting the search for modern cryptographic primitives with memory safety, though it is focused on a specific set of operations rather than a broad library.

Libsodium is a well-regarded C library with modern primitives and constant-time operations, not a Rust library; it lacks a pure Rust implementation and Rust-native memory safety guarantees, so it's a neighbouring tool rather than the Rust cryptography library you're looking for.

rustls is a memory-safe TLS protocol implementation in Rust, not a library of general-purpose cryptographic primitives — it uses and wraps modern primitives for secure communication, but if you need direct access to hashing, encryption, or signing primitives, you would want a library like ring or RustCrypto instead.

Shadowsocks-rust is a proxy application, not a library of cryptographic primitives — it uses cryptography internally but does not expose safe, misuse-resistant APIs for building other tools, so it doesn't match the search for a modern Rust cryptography library.