MORUS cipher for Rust.

Frank Denis

Last update: Oct 24, 2022

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Overview

MORUS for Rust

This is a Rust implementation of MORUS (MORUS-1280-128), ported from the Zig implementation.

MORUS is a fast authenticated cipher for platforms without hardware AES acceleration.

It performs especially well on WebAssembly compared to alternatives.

Cargo flags

std: allow dynamic allocations

std is the default.

A benchmark can be run that way:

export RUSTFLAGS="-C target-cpu=native"
cargo bench

Benchmarks

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

Rust implementations

Crates:

aes-gcm
chacha20poly1305
morus

Macbook Pro - 2,4 GHz Intel Core i9.

cipher	speed
aes128-gcm	1.91 G/s
chacha20-poly1305	1.48 G/s
morus	3.76 G/s

WebAssembly (Wasmtime)

cipher	speed
aes128-gcm	44.13 M/s
chacha20-poly1305	193.05 M/s
chacha20-poly1305 (+simd128)	196.54 M/s
morus	1.07 G/s
morus (+simd128)	1.38 G/s

WebAssembly (WAVM)

cipher	speed
aes128-gcm	57.01 M/s
chacha20-poly1305	335.82 M/s
morus	1.95 G/s

Other implementations (macOS native)

cipher (implementation, runtime)	speed
zig-morus (Zig)	5.89 G/s

Other implementations (WebAssembly)

cipher (implementation, runtime)	speed
zig-morus (Zig, wasmtime+simd128)	1.77 G/s
zig-morus (Zig, WAVM)	3.50 G/s

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