HLS encryption: how AES-128 video encryption works
What HLS encryption protects, why it's so often bypassed through the key every player receives, what it can't do, and what to ask your video platform.
Ideas & updates
The Upclass Blog
Security, piracy and engineering deep dives, plus practical ideas for growing your institute. From the team building Upclass.
More articles Page 15 of 21
Is copyright registration mandatory in India for courses?
No: copyright in lectures, notes and tests is automatic. When registration is still worth it, who owns faculty content, what it costs and how to file online.
How to report a WhatsApp group sharing your paid course
WhatsApp can't read group chats, so reporting works differently. How to report a group or admin, escalate to the India grievance officer and find the source.
L4 vs L7 load balancers: differences and when to use each
What layer 4 and layer 7 load balancers can see and do, ALB vs NLB on AWS, load balancing algorithms, and a typical layout for a learning platform.
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.
How to conduct an online exam for thousands of students
Run a big mock test without crashes or chaos: choose the exam window, rehearse and load test, protect answers on bad networks, set integrity rules and publish fair ranks.
Copyright infringement punishment in India: the key sections
A plain-English guide to the Copyright Act, 1957 for educators: who owns a recorded lecture, Sections 51, 63, 65A and 65B, civil remedies and what cognizable means.
Rate limiting algorithms: token bucket vs leaky bucket
Fixed and sliding windows, token and leaky buckets compared, where to enforce limits, distributed limits with Redis, and how to protect OTP, login and test submission.
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.
How to file a cyber crime complaint online in India
What the national cyber crime portal is for, when a copyright FIR at a police station works better, what evidence to attach and how to write a complaint police can act on.
WebSocket scaling for live classes, chat and polls
How to scale WebSockets: connections per server, load balancing long-lived connections, Redis pub/sub fan-out, reconnect storms, and when SSE or polling is simpler.
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.
Upclass for institutes
Launch your academy. Keep every course safe.
Your courses, live classes and tests in your own branded app, with piracy protection on every lecture. Plans start at ₹1,999/month.