messtar 0.4.4

Messtar — custom encryption protocol built with X25519, HKDF and AES-256-GCM
Documentation 
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# Messtar


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Messtar is a custom, lightweight encryption protocol written in Rust, designed for secure end-to-end data transmission. It ensures confidentiality, integrity, and mutual authentication.

## Features

- **Key Exchange:** X25519 Diffie-Hellman for perfect forward secrecy
- **Key Derivation:** HKDF-SHA256
- **Encryption:** AES-256-GCM
- **Authentication:** Ed25519 mutual identity verification during handshake
- **Security:** Replay attack protection, strict packet freshness, and automatic key ratcheting
- **Transport:** Optional async TCP layer built on `tokio` and `postcard`

## Installation


```toml
[dependencies]
# Core protocol

messtar = "0.4.2"

# With async TCP transport layer

messtar = { version = "0.4.2", features = ["transport"] }