Every padlock in your browser, every signed app update and every encrypted e-mail relies on public key cryptography and digital certificates. This hub explains the whole system step by step: how encryption works, what is inside a certificate, why your browser trusts it, how certificates are checked and revoked, how organisations issue and renew them automatically, and where the post-quantum change is heading.
Encryption basics
- Encryption Algorithms: RSA vs. AES – What is the Difference?: how asymmetric and symmetric encryption differ in key length, security, speed and scalability, and where each one is used.
- Mastering Secure Connections: How to Generate and Use SSH Keys: How to generate SSH keys, copy the public key to a server and log in without passwords, plus practical tips for keeping your private keys secure.
- VeraCrypt: Balancing Speed and Security: key features, hidden volumes, keyfiles, PIM, encryption algorithms and their speed, and containers vs partition encryption.
Issuing and managing certificates
- Understanding ACME Protocol and Certificate Automation: accounts, orders, challenges, finalization and certificate delivery step by step.
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