What is PKI? Public key infrastructure explained
How certificates, chains and certificate authorities make public keys trustworthy, India's licensed certifying authorities, and the move to short-lived certificates.
Security & Encryption
Encryption, AES-256, TLS and HTTPS, explained
37 articles
Articles
What is decryption? Meaning, keys and examples
Decryption turns ciphertext back into readable data with the right key. A worked AES-GCM example, the kinds of keys involved, and why attackers target the moment of decryption.
Encoding vs encryption vs hashing: what's the difference?
Encoding changes format, encryption hides data and hashing fingerprints it. A side-by-side table, a task-by-task guide, and where salts, peppers and obfuscation fit.
DPDP Act compliance checklist for coaching institutes
What the DPDP Act 2023 and DPDP Rules 2025 require of coaching institutes: notices, consent, parental consent, security, breach reporting, retention and the May 2027 deadline.
What is encryption? A plain-English guide
Encryption protects your UPI payments, WhatsApp chats and course videos. Here's how it works, what keys do, and what encryption can and can't protect.
Symmetric vs asymmetric encryption: what's the difference?
One shared key, or a public and private pair? How the two families of encryption work, what each is good at, and why the internet relies on both at once.
AES-256, explained simply
What AES-256 is, what the 256 means, what happens inside the cipher, and why real-world failures come from key handling rather than the algorithm.
How SSL/TLS works: the handshake, certificates and session keys
A step-by-step walk through the TLS 1.3 handshake, how certificates prove a site is genuine, and how session keys keep each connection private.
Encryption at rest vs in transit: what each protects
In transit protects data on the network, at rest protects it in storage, and neither covers data in use. What each one stops, what cloud defaults cover and how to answer questionnaires.
Can encrypted data be hacked? How encryption really fails
Attackers rarely break the maths. They steal keys, guess passwords, attack devices before encryption or after decryption, or exploit bugs. What that means for protecting video.
ECC encryption vs RSA: elliptic curves explained
Why elliptic curves match RSA with far smaller keys: ECDH, ECDSA and Ed25519, choosing P-256 or X25519, measured speeds side by side, and the quantum risk.
RSA encryption explained: how it works, with an example
How RSA works, with a small-number example you can check by hand: encryption vs signing, key sizes and speed, RSA vs AES, and what quantum computers mean for it.
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