Cybersecurity

CTF, cryptography, and security fundamentals.

cryptography security Diffie-Hellman ECDH mathematics 10 giu 2026

The Diffie-Hellman Key Exchange

A complete explanation of the Diffie-Hellman key exchange: from pre-1976 symmetric cryptography to modular arithmetic, the discrete logarithm problem, the DH algorithm with a numerical example (p=23, g=5), and the elliptic curve variant (ECDH).

TLS SSL HTTPS cryptography security certificates cipher-suite 10 giu 2026

TLS/SSL — Secure Communication on the Web

A complete guide to TLS/SSL: evolution from SSL 2.0 to TLS 1.3, layered architecture, step-by-step handshake (TLS 1.2 and 1.3), the X.509 certificate chain, cipher suites with Forward Secrecy, AEAD and practical inspection tools.

python cybersecurity security venv libraries CTF 30 apr 2026

Python for Cybersecurity

Introductory guide to using Python in cybersecurity: virtual environments, library installation, and an overview of the main libraries (pyshark, pwntools, scapy, requests, BeautifulSoup, selenium).

python pwntools CTF exploit security binary pwn 30 apr 2026

The pwntools Python Library

Practical guide to pwntools: connecting to remote services, receiving data with recvuntil/recvline/recvn, interactive mode, timeouts and pattern matching with expect().