Browsing Category
Cryptography
36 posts
Cryptography is the process of hiding or coding information so that only the person a message was intended for can read it. The art of cryptography has been used to code messages for thousands of years and continues to be used in bank cards, computer passwords, and ecommerce.
Block Cipher in Cryptography: Principles, Structure, and Design Explained
At the heart of modern digital security — from HTTPS connections to encrypted hard drives to secure messaging…
Stream Cipher in Cryptography: RC4, ChaCha20, and Keystream Generation Explained
Every time a browser opens a secure website, a chat app sends a message, or a Wi-Fi router…
Key Revocation in Cryptography: Certificate Revocation, CRL, and OCSP Explained
A public key infrastructure is only as trustworthy as its ability to say “this key is no longer…
Key Distribution in Cryptography: Symmetric and Asymmetric Key Exchange Methods
Every cryptographic system, no matter how mathematically elegant, ultimately faces the same practical question: how do two parties…
Key Storage in Cryptographic Security: Hardware Security Modules, Key Vaults, and Best Practices
Cryptography can survive a weak algorithm choice more easily than it can survive a poorly stored key. Time…
Types of Keys in Cryptography: Symmetric, Asymmetric, Session, and Master Keys Explained
Not every cryptographic key plays the same role. Some keys are meant to be shared, others must never…
Cryptographic Hash Functions: SHA, MD5, and Applications in Digital Signatures and Integrity
When I first started digging into cryptography, hash functions were the topic that made everything else click into…
Symmetric Key Encryption: Algorithms, AES, DES, and Secure Key Management Explained
I remember the first time I understood symmetric encryption properly — it was less about the math and…
Public Key Encryption in Cryptography: RSA, ECC, and Asymmetric Cryptography Explained
The first time asymmetric cryptography made sense to me, I was thinking about mailboxes. Imagine a mailbox with…
Types of Cryptography: Symmetric, Asymmetric, and Hash Functions Explained
Whenever someone asks me to explain cryptography from scratch, I always start with the same map: there are…