Comprehensive Security Approach

At Dylimu, we implement a defense-in-depth strategy that combines hardware security, cryptographic protocols, and user-centered design to create an impenetrable barrier between your private keys and potential threats.

Our security architecture is built on the principle that no single security measure is sufficient. Instead, we layer multiple independent security mechanisms to ensure that even if one layer is compromised, your assets remain protected.

Each device undergoes rigorous security testing, including penetration testing, side-channel analysis, and fault injection attempts, to validate our security claims before reaching your hands.

Multi-layered security architecture diagram

Defense in Depth

Multiple independent security layers working in concert

Hardware Security

  • EAL5+ certified secure element chip
  • Tamper-evident casing
  • Physical attack resistance
  • Hardware-based encryption
  • Isolated secure storage

Our devices use specialized security chips designed to resist physical attacks and protect cryptographic secrets, even if an attacker gains physical access to the device.

Cryptographic Security

  • BIP39 seed generation
  • AES-256 encryption
  • SHA-512 hashing
  • ED25519 and SECP256K1 support
  • True random number generation

We implement industry-standard cryptographic algorithms that have withstood extensive cryptanalysis, ensuring your keys remain mathematically secure against computational attacks.

User Security

  • PIN protection
  • Optional biometric verification
  • Multi-signature support
  • Transaction verification display
  • Backup and recovery mechanisms

Our user-centered security features provide intuitive protection against social engineering and user error, which are common vectors for cryptocurrency theft.

Secure Element Chip Close-up

Secure Element Technology

The cornerstone of our hardware security is the secure element chip—the same technology used in high-security applications like payment cards, passports, and military systems.

These specialized microcontrollers are designed from the ground up with security as their primary function. They include:

  • Physical Security Measures: Protection against microscopy, laser, and electromagnetic attacks
  • Secure Boot: Cryptographically verified firmware loading
  • Memory Encryption: All stored data is encrypted at rest
  • Side-Channel Protection: Resistance against power analysis and timing attacks
  • Secure Key Storage: Private keys never leave the secure environment

Our lazric security architecture ensures that even if an attacker gains physical access to your device, extracting your private keys remains practically impossible.

Air-Gap Protection

Complete isolation from networked threats

What is an Air-Gap?

An air-gap is a security measure that physically isolates a computer or network from unsecured networks, such as the public Internet or an unsecured local area network.

Our hardware wallets maintain a strict air-gap, never connecting directly to the internet. This approach eliminates entire categories of remote attacks that plague software wallets and internet-connected devices.

When you need to make a transaction, the unsigned transaction data is transferred to your Dylimu device via QR code or offline USB connection. The device signs the transaction in its secure environment, and the signed transaction is then returned to your online device for broadcasting to the network.

Benefits of Air-Gap Security

  • Eliminates remote hacking attempts
  • Protects against malware and keyloggers
  • Prevents unauthorized access attempts
  • Shields from network-based vulnerabilities
  • Isolates private keys from internet exposure

This approach ensures that even if your computer or smartphone is compromised by malware, your cryptocurrency private keys remain secure within the isolated environment of your hardware wallet.

Open Source Transparency

We believe that true security requires transparency. That's why our firmware is open source and available for public review. This approach offers several critical security benefits:

  • Community Auditing: Thousands of eyes review our code for potential vulnerabilities
  • No Security Through Obscurity: We don't rely on keeping our methods secret
  • Independent Verification: Anyone can verify that the code does exactly what we claim
  • Rapid Vulnerability Response: Open collaboration leads to faster security improvements

Our commitment to open source security extends to our development process, with public issue tracking, transparent security discussions, and community contributions.



function deriveKey(seed, path) {
 
  if (!isValidSeed(seed) || !isValidPath(path)) {
    throw new Error('Invalid input parameters');
  }
  
 
  const masterKey = secureElement.deriveMasterKey(seed);
  
 
  let derivedKey = masterKey;
  const segments = path.split('/');
  
  for (const segment of segments) {
    if (!segment) continue;
    
    const hardened = segment.endsWith("'");
    const index = parseInt(hardened ? 
      segment.slice(0, -1) : segment);
    
    derivedKey = secureElement.deriveChildKey(
      derivedKey, 
      index, 
      hardened
    );
  }
  
 
  return secureElement.getPublicKey(derivedKey);
}

                            

Independent Security Validation

Third-party verification of our security claims

FIPS 140-2 Level 3

Our secure elements meet Federal Information Processing Standards for cryptographic modules, ensuring they meet stringent government and financial industry requirements.

Common Criteria EAL5+

Our devices have been evaluated against international Common Criteria standards, verifying their security functionality and assurance requirements.

Independent Audits

Regular security audits by leading security research firms ensure our devices maintain the highest security standards against evolving threats.

Our commitment to security is ongoing. We regularly submit our devices and firmware for independent testing and maintain a security bounty program to encourage responsible disclosure of potential vulnerabilities.

Expert Security Analysis

What security researchers say about our approach

"The multi-layered security approach implemented by Dylimu represents the current best practices in hardware security. Their commitment to open-source development and independent security auditing demonstrates a serious approach to cryptocurrency protection."

Dr. Eleanor Sattler

Cryptography Researcher, MIT

"I've personally reviewed the security architecture of Dylimu devices and found their implementation of secure elements and air-gap protection to be particularly robust. Their approach to physical security deserves special mention for addressing often-overlooked attack vectors."

Marcus Chen

Hardware Security Specialist, CyberDefense Institute

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