AEGIS for Rust

This is a Rust implementation of the AEGIS authenticated cipher, ported from the Zig standard library.

AEGIS is extremely fast on CPUs with AES acceleration, has a large nonce size, and is key committing.

Cargo flags

• std: allow dynamic allocations

std is the default.

IMPORTANT: In order to get decent code on x86 and x86_64 CPUs, you should set additional rustc flags prior to compiling that crate or a project using it:

sh export RUSTFLAGS="-Ctarget-feature=+aes,+sse4.1"

A benchmark can be run that way:

sh export RUSTFLAGS="-C target-cpu=native -Ctarget-feature=+aes,+pclmulqdq,+sse4.1" cargo bench

Benchmarks

Benchmarks take a 16384 bytes input block. Results are in bytes per second.

Rust implementations

Crates:

• aes-gcm
• chacha20poly1305
• aegis128l

Macbook Pro - 2,4 GHz Intel Core i9, RUSTFLAGS set.

| cipher | speed | | ----------------- | -------- | | aes256-gcm | 1.59 G/s | | aes128-gcm | 1.91 G/s | | chacha20-poly1305 | 1.48 G/s | | aegis128l | 6.21 G/s |

Zen 2, RUSTFLAGS set.

| cipher | speed | | ----------------- | ---------- | | aes256-gcm | 934.41 M/s | | aes128-gcm | 973.18 M/s | | chacha20-poly1305 | 1.35 G/s | | aegis128l | 4.94 G/s |

WebAssembly (Wasmtime)

| cipher | speed | | ----------------- | ---------- | | aes256-gcm | 36.88 M/s | | aes128-gcm | 44.13 M/s | | chacha20-poly1305 | 193.05 M/s | | aegis128l | 48.98 M/s |

Other implementations

| cipher (implementation) | speed | | --------------------------- | --------- | | aes256-gcm (OpenSSL) | 4.97 G/s | | aes128-gcm (OpenSSL) | 6.89 G/s | | chacha20-poly1305 (OpenSSL) | 2.67 G/s | | aes128-ocb (OpenSSL) | 7.10 G/s | | aegis128l (Zig) | 14.08 G/s | | rocca (Zig) | 16.28 G/s |