Principles of Operation

Understanding the cryptographic foundations and security architecture that protects your digital assets

The Importance of Cryptography

Cryptography is the science of secure communication in the presence of adversaries. In the context of cryptocurrency, it's the foundation that ensures only authorized users can access and transfer digital assets.

At Fexege, we implement multiple layers of cryptographic protection, including:

  • Elliptic Curve Cryptography (ECC) for key generation
  • AES-256 encryption for data protection
  • SHA-256 and SHA-512 hashing algorithms
  • BIP-39 compliant mnemonic seed phrases

These technologies work in harmony to create an impenetrable barrier between your assets and potential threats.

Fexege Security Architecture Diagram

Device Architecture

Secure Element

The core of our device is a tamper-resistant secure element chip that stores private keys and executes cryptographic operations in an isolated environment. This physical isolation prevents side-channel attacks and key extraction even if the device is physically compromised.

Lazric Firmware

Our proprietary firmware is minimalist by design, reducing the attack surface while providing essential functionality. Each firmware release undergoes rigorous security auditing and is cryptographically signed to prevent unauthorized modifications.

True Random Number Generator

Cryptographic security depends on unpredictability. Our devices incorporate a hardware-based true random number generator (TRNG) that uses quantum effects to generate entropy, ensuring unpredictable key generation that cannot be reproduced.

Isolated Interface

The user interface operates in a separate environment from the secure element, creating an air gap between displayed information and cryptographic operations. This isolation ensures that even if the interface is compromised, private keys remain secure.

Fexege User Interface

The Power of Offline Storage

Cryptocurrency exchanges and online wallets are constant targets for hackers. By moving your assets to an offline hardware wallet, you eliminate the most common attack vectors:

  • Phishing attacks become ineffective as private keys never leave the device
  • Malware cannot extract information from an air-gapped device
  • Exchange hacks don't affect your holdings as you maintain full custody
  • Server vulnerabilities are irrelevant to your security

Fexege devices maintain this offline protection while still allowing you to view your portfolio and initiate transactions through our companion applications, which never have access to your private keys.

Frequently Asked Questions

What happens if I lose my Fexege device?

Your assets remain secure. During device setup, you create a 24-word recovery phrase that can be used to restore access to your cryptocurrency on a new device. This recovery phrase should be stored securely offline, separate from your device.

Can hackers remotely access my hardware wallet?

No. Fexege devices operate offline and require physical presence to authorize transactions. Private keys never leave the secure element, making remote hacking virtually impossible.

Do I need technical knowledge to use Fexege?

No specialized knowledge is required. Our devices feature an intuitive interface and step-by-step setup process. The companion application guides you through all operations with clear instructions.

Which cryptocurrencies are supported?

Fexege supports over 50 major cryptocurrencies and thousands of tokens. This includes Bitcoin, Ethereum, Ripple, Cardano, Polkadot, and most ERC-20 tokens. Our firmware is regularly updated to add support for additional cryptocurrencies.

Is my device protected against physical tampering?

Yes. Our devices include tamper-evident seals and the secure element chip is designed to erase sensitive data if physical tampering is detected. Additionally, PIN protection and optional biometric verification prevent unauthorized use even if someone gains physical access to your device.

Data Security Layers

1

Physical Security

Tamper-resistant hardware design with specialized secure elements

2

Access Control

PIN protection with progressive time delays and optional biometric verification

3

Cryptographic Security

Military-grade encryption and cryptographic signing of all operations

4

Transaction Verification

On-device display for transaction confirmation prevents man-in-the-middle attacks

5

Recovery Mechanism

BIP-39 seed phrases enable secure recovery in case of device loss or damage