Uploaded June 2024 | Updated September 2026, 1 week ago

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Live Web Dev batch starts 3rd August - 100xdevs.com
In this video, Harkirat takes you through how to build an examination website in a mildly decentralized fashion.


📚 𝗠𝗮𝘁𝗲𝗿𝗶𝗮𝗹𝘀/𝗥𝗲𝗳𝗲𝗿𝗲𝗻𝗰𝗲𝘀:
Slides - canva.com/design/DAGIWlC7gV0/54uEymCHzlh9oX4Xx569xA/view?utm_content=DAGIWlC7gV0&utm_campaign=designshare&utm_medium=link&utm_source=editor
Github - github.com/hkirat/exam-crypto

00:00:00 - Introduction
00:01:16 - What we'll build and Prerequisites
00:03:54 - Current problem in conducting an exam
00:04:48 - The solution to the problem
00:05:58 - Assumptions
00:06:24 - Current Problem
00:11:43 - Web2 Solution
00:14:06 - Cryptographic + Decentralized Solution
00:14:59 - Pre Exam Phase problems Solution
00:19:15 - Using Encryption
00:26:19 - Examiner problem encryptor code
00:34:10 - Solution for problems that come during the contest
00:35:44 - Two approaches
00:36:04 - Time Lock puzzles approach
00:38:00 - Code of time lock puzzle code
00:42:21 - Guardian approach
00:45:50 - Shamir Secrets approach
00:50:25 - How does Shamir work?
00:50:46 - Code for Shamir approach
01:02:10 - Solving timely submissions problem
01:04:40 - What are Blockchains and how it can be used here
01:08:46 - Challenges in using Blockchain
01:10:20 - Verifiable State Machine
01:18:37 - Public Key Cryptography
01:27:40 - Implementation of Public Key Cryptography (Code)
01:29:39 - Understanding how verifiable state machine would work
01:38:52 - Open questions
01:44:50 - Bye Bye

🔗 𝗟𝗶𝗻𝗸𝘀:
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