The focus of this module is to provide a core understanding of the fundamental areas of cryptography andhost-based security. It focuses on two core areas:Cryptography:- Cryptography Fundamentals (GCD, Elliptic Curve, etc).- Asymmetric Key Encryption. Including RSA and Elliptic Curve.- Symmetric Key Encryption. Including AES and associated modes.- Hashing and MAC Methods. Including MD5, SHA-1, SHA-256, SHA-3 and PBKDF2.- Tunnelling. SSL/TLS, IPSec.- Trust Infrastructures. Digital Certificates, Key Distribution Centres (Kerberos), Identity and roleintegration (Key pair identity, multi-factor, biometrics).- Key Exchange. Diffie-Hellman Method, ECDH.- Blockchain, Distributed Ledgers and Cryptocurrency. Ethereum, Smart Contracts, DataTokenization.,Transactions.- Future cryptography: Zero Knowledge Proof, Homomorphic Encryption, Light-weight cryptography,Quantum robust methods.Host-based integration with domain infrastructures:- Practical authentication methods (Linux/Windows).- Host data analysis using data analysis tools.- Host and domain system rights. Active Directory. Log integration and rights.- Security auditing best-practice for hosts. Active patch management. Risk assessments.