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.
#encryption
17 articles tagged #encryption
Articles
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.
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.
Is AES-128 still secure? Key size vs key handling
Yes, with caveats that have nothing to do with key length: the brute-force maths, what quantum computing changes, GCM and CBC pitfalls, and AES-128 in HLS video.
Key rotation: what it is and how often to rotate keys
What goes wrong without key rotation, how often NIST suggests rotating, why rotation isn't re-encryption, the special case of video keys, and what to ask.
Is Base64 encryption? Why encoding isn't security
No: Base64 is a public, keyless encoding anyone can reverse. How it works, why 'Base64-encrypted' passwords, tokens and links leak, and what to use instead.
Post-quantum cryptography: what changes and when
Quantum computers threaten RSA and elliptic curves, not AES. NIST's new standards, harvest now decrypt later, hybrid key exchange in browsers, and a plan for platforms.
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