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Blockchain · Major Project
Decentralised File Storage with IPFS
Encrypted uploads to IPFS with ownership and sharing on-chain
3-4 weeks build
Overview
A personal drive where files are encrypted in the browser and pinned to IPFS, while a contract records who owns each file and who it is shared with. Sharing wraps the file key for the recipient's public key, and revoking removes their entry. Folders, file names and sizes are kept as encrypted metadata so the chain reveals nothing about content. Deploys to Sepolia or local Hardhat.
What makes it stand up
- 01Browser-side encryption before upload
- 02IPFS pinning with content IDs recorded on-chain
- 03Wallet-based ownership with no username or password
- 04Share and revoke access per file and per wallet
- 05Encrypted metadata so names and folders stay private
Module breakdown
- 01
Encryption
Generates a key per file and encrypts before upload.
- 02
IPFS layer
Pins ciphertext and returns its content ID.
- 03
Ownership contract
Maps owners to files and records share grants.
- 04
Sharing
Wraps file keys for each recipient wallet.
- 05
Drive UI
React file browser with upload, share and download.
After this, you will be able to
- Explain content addressing and why a CID changes with the file
- Defend encrypting before pinning to a public network
- Demo sharing a file with a second wallet and revoking it
Technology stack
- Solidity
- Hardhat
- IPFS
- ethers.js
- React
- MetaMask
- Level
- Major Project
- Domain
- Blockchain
- Build time
- 3-4 weeks
- Difficulty
You receive
- Complete, commented source code
- 60-90 page project report (IEEE format)
- Editable presentation deck
- Architecture, ER and UML diagrams
- Local setup and deployment guide
- Sample dataset or seed data
- Viva question bank with answers
- One 45-minute walkthrough call
- 30 days of doubt-clearing support