CryptoVault: A Blockchain-Based Digital Wallet for Cryptocurrency

Objective:

To develop a secure and user-friendly digital wallet that allows users to store, send, and receive various cryptocurrencies while maintaining full control over their private keys.

Key Features:

Multi-Currency Support: Store and manage Bitcoin, Ethereum, and other tokens.

Private Key Management: Users control their own keys with secure encryption.

Send/Receive Functionality: Instant peer-to-peer transfers via blockchain.

QR Code Integration: Easy transfers through scannable addresses.

Transaction History: Transparent and immutable record of all activity.

Backup & Recovery: Secure seed phrase-based account recovery.

Two-Factor Authentication (2FA): Added security layer for login and transfers.

Technologies Used:

Blockchain Platforms (Ethereum, Bitcoin, BNB Chain): For underlying crypto transactions.

React Native / Flutter: For cross-platform mobile wallet development.

Web3.js / Ethers.js / BitcoinJS: To interact with different blockchains.

Node.js / Express: For backend APIs (e.g., real-time price fetching).

Cryptographic Libraries (AES, SHA-256): For private key encryption and wallet security.

IPFS or LocalStorage: For secure data storage if needed.

How It Works:

Wallet Creation: Users generate a wallet and are given a unique address and recovery phrase.

Key Storage: Private keys are encrypted and stored locally on the device.

Sending Crypto: Users input recipient address or scan QR, sign the transaction, and broadcast it to the blockchain.

Receiving Crypto: Wallet listens for blockchain activity and reflects received funds in real-time.

Transaction Confirmation: All transfers are validated by the network and stored immutably on-chain.

Backup & Recovery: Users can restore wallets using their seed phrase on any device.

Benefits:

Full User Control: No third-party holds your funds or private keys.

Security: High-level encryption and 2FA protect user assets.

Transparency: All transactions are publicly verifiable on the blockchain.

Portability: Accessible from both mobile and web platforms.

Ease of Use: Simple interface with QR and auto-fill features.