Cryptography: encryption, algorithms, PKI and post-quantum
Cryptography fundamentals: AES, RSA, ECC, password hashing (bcrypt, Argon2), digital signatures, PKI, TLS 1.3, ML-KEM and ML-DSA.
Summary: Cryptography protects confidentiality, integrity, and authenticity: symmetric encryption (AES-256-GCM) for performance, asymmetric encryption (RSA-4096, ECC P-384) for key exchange and signatures, and hybrid methods that combine both. TLS 1.3 (mandatory, 1.0/1.1 deprecated), PKI and certificate chains, quantum threat from Shor’s algorithm → post-quantum cryptography (CRYSTALS-Kyber, CRYSTALS-Dilithium). BSI recommends: AES-256, RSA-3072+, SHA-256+.
Sources & References
- [1] NIST Post-Quantum Cryptography Standardization - NIST
- [2] BSI: Kryptographische Verfahren - Empfehlungen und Schlüssellängen TR-02102 - BSI
- [3] RFC 8446 - TLS 1.3 - IETF
- [4] OWASP Cryptographic Storage Cheat Sheet - OWASP
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About the Author
M.Sc. in Internet Security (if(is), Westfälische Hochschule). COO and authorized officer (Prokurist) with expertise in information security consulting and security awareness. Junior professor (Nachwuchsprofessur) for Cyber Security at FOM Hochschule, CISO lecturer at isits AG and doctoral candidate at the Graduierteninstitut NRW.
11 Publikationen
- Understanding Regional Filter Lists: Efficacy and Impact (2025)
- Privacy from 5 PM to 6 AM: Tracking and Transparency Mechanisms in the HbbTV Ecosystem (2025)
- A Platform for Physiological and Behavioral Security (2025)
- Different Seas, Different Phishes - Large-Scale Analysis of Phishing Simulations Across Different Industries (2025)
- Exploring the Effects of Cybersecurity Awareness and Decision-Making Under Risk (2024)
- Sharing is Caring: Towards Analyzing Attack Surfaces on Shared Hosting Providers (2024)
- On the Similarity of Web Measurements Under Different Experimental Setups (2023)
- People, Processes, Technology - The Cybersecurity Triad (2023)
- Social Media Scraper im Einsatz (2021)
- Digital Risk Management (DRM) (2020)
- New Work - Die Herausforderungen eines modernen ISMS (2024)
