# NEXUS-Q Post-Quantum Security Engine

> NEXUS-Q: Post-quantum cryptography library for long-term data security.
- Title: NEXUS-Q Post-Quantum Security Engine · NEXUS-Q | Shortify
- Summary: NEXUS-Q: Post-quantum cryptography library for long-term data security. NEXUS-Q is a Rust-based post-quantum cryptography library that protects secrets using…
- Keywords: nexusq, post-quantum, cryptography, rust, key management, quantum computing, ml-kem, ed25519, security, open source, technology, NEXUS-Q
- Source: NEXUS-Q — https://nexus-q.link
- Read time: 1 min
- Topics: nexusq, post-quantum, cryptography, rust, key management, quantum computing, v3, ml-kem, ed25519, security, open source, technology
## What is NEXUS-Q?
A post-quantum cryptographic security engine library for Rust applications and servers.
## Data Protection
Authenticated encryption of files and streams using envelope encryption format F-02.
## Key Lifecycle
Full key lifecycle: generation, rotation, revocation and destruction stored in encrypted vault format F-01.
## Digital Signatures
Digital signatures, verification, identity rotation and revocation with signed verifiable credentials.
## Why Post-Quantum?
Quantum computers could break current public-key schemes like RSA, so NEXUS-Q uses NIST-standardized lattice algorithms.
## The Golden Rule
No invented cryptography; all primitives are standardized algorithms from maintained libraries.
## How It Works
Policy decides access, vault guards keys, and security events are logged for tampering detection.
## Unlock Vault
Password unlocks encrypted vault using Argon2id with atomic writes.
## Manage Keys
Generate, rotate, revoke and destroy keys with zeroized memory when no longer needed.
## Encrypt or Sign
Hybrid ML-KEM + X25519 for key exchange, AES-256-GCM or ChaCha20-Poly1305 for data, Ed25519 for signatures.
## Enforce Policy
Deny-by-default policy engine decides allowed actions before they happen.
## Audit Everything
HMAC-authenticated audit log with rollback anchoring detects tampering and truncation.
## Library First
Core is Rust library with CLI, HTTP server and language SDKs layered on top.
## Hardware-Agnostic
Provider traits support software, TPM, HSM, Secure Element and RISC-V hardware.
## Key takeaway

NEXUS-Q is a Rust-based post-quantum cryptography library that protects secrets using standardized algorithms and zeroized keys, with V3 as its current release.