Project Overview
In partnership with Krown Technologies Inc. and Quantum eMotion Corp (TSXV:QNC), we developed Qastle Wallet—a groundbreaking cryptocurrency wallet that protects digital assets with post-quantum cryptography. Available as a Chrome extension and mobile app, Qastle defends users against 'harvest now, decrypt later' attacks before Q-Day arrives.

The Challenge
As quantum computing advances rapidly, existing cryptographic standards (ECDSA, RSA) face obsolescence. The challenge was to build a wallet that provides quantum-resistant security today while maintaining the seamless Web3 experience users expect.
- Implement post-quantum cryptography before Q-Day makes traditional encryption breakable
- Protect against 'harvest now, decrypt later' attacks targeting stored wallet data
- Maintain familiar Web3 UX for sending, receiving, and trading assets
- Support multiple platforms: Chrome extension, iOS, and Android
- Enable easy migration from existing wallets with quantum-secure re-encryption
Quantum-Grade Security
Qastle implements cutting-edge post-quantum cryptography engineered to resist even the most powerful quantum computers, ensuring assets remain protected today and tomorrow.
- Post-quantum cryptographic algorithms resistant to quantum attacks
- 100% quantum-secured entropy validation for key generation
- Protection from 'harvest now, decrypt later' interception attacks
- Private keys encrypted with quantum-resistant standards
- Zero wallets lost since launch—perfect security track record
- Monthly quantum security plan at $9.95 for ongoing protection
Seamless Web3 Experience
Despite advanced security under the hood, Qastle delivers the same intuitive Web3 experience users love—with no compromise on usability.
- Send, receive, and trade cryptocurrency with ease
- Import existing wallets and re-encrypt with quantum-secure keys
- Verify holdings and manage assets from a unified dashboard
- Connect to decentralized applications (dApps) securely
- Real-time balance tracking and transaction history
- Automated key migration with user control throughout
Technical Implementation
The wallet leverages state-of-the-art cryptographic research and cross-platform development to deliver enterprise-grade quantum security.
- Chrome browser extension for desktop Web3 interactions
- Native iOS and Android mobile applications
- Integration with Quantum eMotion's quantum random number generation
- Post-quantum cryptographic libraries (NIST-approved algorithms)
- Secure key storage with hardware-backed encryption where available
- Real-time security monitoring and threat detection
Technologies
Key Results
- Launched the world's first quantum-secure hot wallet
- Zero wallets compromised—100% security track record
- 100% quantum-secured entropy validation on all key generation
- Available across Chrome, iOS, and Android platforms
- Partnership between Krown Technologies and publicly-traded Quantum eMotion Corp
- Protecting users against quantum threats before Q-Day arrives
Why It Matters
Qastle Wallet represents a pivotal advancement in cryptocurrency security, preparing users for the quantum computing era before it arrives. By combining post-quantum cryptography with an intuitive Web3 experience, we have helped create a wallet that protects digital assets today while future-proofing them against tomorrow's quantum threats.
Services Behind This Project
The same senior teams that delivered this work:
"Gareth and the team at Scalexa have been a great help to us and they performed their duties with respect and professionalism."