Cypherock
  • Introduction
  • Design Decisions
    • The balance between security and convenience
    • Cypherock X1 Hardware architecture
      • Using ultrasonic welding for the X1 Vault enclosure
      • Encrypted NFC communication for X1 cards
      • Using Javacards instead of MicroSD
      • Choosing USB vs QR Code
      • Why the X1 cards are not upgradeable
    • Cypherock is BIP39 compliant
    • Private keys should be near to impossible to extract
    • Conflict between trusted parties should not result in unauthorized access
    • Using Shamir Secret Sharing vs. Multi-sig
      • How is Shamir Secret Sharing implemented within Cypherock X1
      • Why Cypherock has a default 2/5 threshold scheme
      • Rejected Key Schemes
    • PIN Protection on Cypherock X1
      • Difference between backing up your PIN vs. Seed Phrase
  • Security Overview
    • Introduction
    • Keylabs - Third Party Security Audit
    • Remote Attacks
    • Physical Attacks
      • $5 Wrench Attack
      • PIN Brute Force Attack
      • Evil Maid Attack
      • Flashing Malicious Firmware
      • Side Channel Attack
      • Supply Chain Attack
  • Cypherock X1 Features
    • Eliminate messy paper backups
    • Open source with secure elements
    • Use Cypherock as a seed phrase vault
    • All-in-one Portfolio Manager
  • Getting Started
    • Download cySync
    • Import Seed Phrase from existing BIP39 compatible wallet
    • Generate a new wallet with Cypherock X1
    • How Cypherock generates your 24-word seed phrase
    • Best practices in keeping your X1 cards secure
      • Use the protective card sleeves
      • Geographical Seperation
      • Choosing your guardians
    • How do I know I am not locked-in to using only Cypherock X1
    • How do I know my Cypherock X1 is genuine?
      • Email 2FA for Product Authentication
    • How to recover your Crypto assets in the case of loss or theft
    • What happens to my Cypherock X1 if Cypherock goes out of business?
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  1. Design Decisions
  2. Cypherock X1 Hardware architecture

Using ultrasonic welding for the X1 Vault enclosure

The Cypherock X1 Vault enclosure is secured using a method called ultrasonic welding. Ultrasonic welding is a process that uses high-frequency mechanical vibrations to weld or join two pieces of material together. In this process, one of the materials is held stationary while the other material is vibrated at a high frequency. The vibrations create friction and heat at the point of contact, which causes the materials to melt and fuse together.

There are three main benefits of using ultrasonic welding:

  1. The process does not require the use of adhesives or other bonding agents and hence it eliminates the risk of chemical contamination or the release of harmful fumes or particles.

  2. It produces welds that are free of any external protrusions.

  3. Ultrasonic welding is a controlled & precise process that reduces the risk of errors or defects that could compromise the product's safety or effectiveness.

For the purposes of securing the internal components of the X1 Vault, ultrasonic welding applied to the enclosure makes it quite difficult for an attacker to take apart the device and perform any alterations that could impact the integrity of the wallet. Any modifications attempted on the wallet after the enclosure has been welded would result in scratches and damages that will be clearly visible, thereby alerting individuals of any tampering with the X1 Vault.

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Last updated 1 year ago

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