Dr. Chokri NOUARCybersecurity & Cryptography

Projects · Security Engineering

From cryptographic ideas to working secure systems.

Selected implementations that translate research and security principles into testable architectures, protocols and technical laboratories.

Flagship Project

The flagship project brings certificate lifecycle, classical cryptography and post-quantum mechanisms into one testable environment.

01Classical + Post-Quantum PKI

Hybrid PKI Lab

An educational and experimental laboratory combining classical PKI, post-quantum cryptography and hybrid certificate workflows. It covers CA hierarchy, certificate issuance and validation, security policies, benchmarks, API endpoints, Docker-based PQC mode and an extended test suite.

  • X.509
  • ML-KEM
  • ML-DSA
  • Hybrid PKI
  • FastAPI
  • Docker
View repository ↗
TypeLab / Framework
StatusActive
LanguagePython
FocusDigital Trust · PKI · PQC
SYSTEM COMPOSITION
  1. Root & Intermediate CA
  2. Classical / Hybrid Certificates
  3. Validation & Policy
  4. Services & Clients

Selected Implementations

Security engineering across networks, IoT and cryptographic systems.

Each project is presented through its security objective, implementation scope and repository—not decorative complexity.

02
Zero Trust · Network Security

ZTNA + PQC Secure Channel

A Zero Trust Network Access prototype combining identity verification, device validation, policy-based authorization and a post-quantum secure communication channel.

  • Zero Trust
  • PQC
  • Authorization
  • Network Security
IMPLEMENTATION FLOW
  1. Identity
  2. Device Trust
  3. Policy Engine
  4. PQC Session
GitHub repository ↗
03
IoT · Secure Communications

PQC Secure Communication for IoT

A practical quantum-resistant communication architecture for constrained IoT environments using PQC key establishment, HKDF session derivation and AES-GCM protection.

  • ML-KEM
  • AES-GCM
  • HKDF
  • IoT
IMPLEMENTATION FLOW
  1. IoT Device
  2. PQC Key Exchange
  3. Key Derivation
  4. Encrypted Channel
GitHub repository ↗
04
Research · Applied Cryptography

Pseudo-Random Number Generator Using Double Pendulum

A chaos-based pseudo-random number generator derived from double-pendulum dynamics and evaluated using NIST SP 800-22 and DIEHARDER statistical test suites.

  • Chaotic Systems
  • PRNG
  • NIST Tests
  • C
IMPLEMENTATION FLOW
  1. Initial Conditions
  2. Chaotic Dynamics
  3. Bit Generation
  4. Statistical Validation
GitHub repository ↗

Project Domains

One portfolio across six connected security domains.

  • 01Digital Trust
  • 02PKI
  • 03Zero Trust
  • 04Network Security
  • 05Post-Quantum Cryptography
  • 06Applied Cryptography

Code & Research

Explore repositories, publications and ongoing technical work.

Visit GitHub ↗View research →