It enables the storage, safekeeping and secure transfer of sensitive commercial and private data for public authorities and companies in compliance with GDPR regulations.

The KOBRA Stick VS is approved by the German Federal Office for Information Security (BSI) for government classified information up to NATO Restricted and EU Restricted.

The confidentiality of the data stored on the KOBRA Stick VS disk is protected against unauthorized access, for example in case of loss or theft of the carrier, as well as in case of various types of attack.

While the KOBRA Stick is not connected to a computer or an external power source (eg USB or USB hub), it will remain in sleep mode and all keys will be disabled.

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  • KOBRA Stick VS guarantees data confidentiality using the following security mechanisms:

  • • Encryption

  • • Access control

  • • Cryptographic Key Management

  • • User management

Encryption :The encryption module integrated into the security case ensures complete encryption of the KOBRA Stick VS. Each stored byte and each written sector on the storage device is encrypted in XTS mode using two cryptographic keys according to 256-bit AES (Advanced Encryption Standard). KOBRA Stick VS also encrypts temporary data and areas that are often ignored by conventional encryption software.


User authentication :User authentication is based on the “have and know” principle

  • • To gain access to the data, the user must have a smart card and know the correct PIN
  • • If the allowed number of incorrect PIN entries is exceeded, the smart card is deactivated and no longer usable
  • • Cryptographic keys are also permanently erased

High-Security

Parameters

Interface- USB 3.0, USB 2.0
Encryption algorithm -AES-256 in XTS mode
Certification - BSI certification
Authentication - PIN code + Smart card
Tamper resistance - YES

Overview of the most important functions

  • • Full-disk AES hardware encryption in XTS mode with two 256-bit cryptographic keys

  • • Authentication using the user’s PIN and Smart card

  • • Division of roles between administrator and user

  • • Management Software Kobra Client VS

  • • External generation and registration of encryption keys on a smart card

  • • Hardware encryption module

  • • Real-time automatic data encryption of all stored bytes and written sectors

  • • Preboot (boot) authentication and can be used to boot another OS sectors

  • • Integrated power supply that allows authentication without connecting to a computer or USB hub

  • • Robust metal housing protected against splashes

  • • Automatic formatting after key change

  • • Operating system independence (supports all operating systems, multimedia devices, smartphones (Android) and machines supporting USB data carriers)

  • • Running many functions without connecting to a PC

  • • Integrated write protection

  • • Configurable number of incorrect PIN entry attempts

  • • Compatible with USB 3.0 and USB 2.0

  • • No read/write speed limitations

  • • Time out function (1 to 30 minutes)

  • • Lock-Out and Quick-Out functions

  • • Easy and secure handling thanks to hardware encryption: connection, login, use

Cryptographic Key Management

The user can generate, change or destroy cryptographic keys at any time. This process is irreversible. Once new cryptographic keys are generated, the old cryptographic keys and thus all data stored on the data carrier are irretrievably destroyed. Therefore, all information stored on the KOBRA Stick VS should first be stored on another encrypted data carrier, if it necessary.

Two 256-bit encryption keys for data encryption and decryption are generated by a hardware random number generator and stored in memory. If the user’s PIN is entered correctly, they are transmitted to the KOBRA Stick VS encryption module for data encryption and decryption.

Package contents

  • • KOBRA Stick VS (externally encrypted USB-C flash drive) version 1.0

  • • 3 USB cables (USB-C to USB-C, USB-C to USB-A, USB-C to USB Micro-B)

  • • 2 Smart cards (Atos CardOS 5.3, CC EAL 4+)

  • • Original packaging

Smart card

Kobra Stick VS comes standard with two Digittrade smart cards (Atos CardOS 5.3, CC EAL 4+) certified according to Common Criteria EAL4 +. In a stand-alone environment, only these smart cards are approved for use in accordance with the VS-NfD authorization.

In addition to DIGITTRADE smart cards, PKI-based enterprise, service and unit identification cards can also be used for authentication. In terms of confidentiality, all data stored on the KOBRA Stick VS is protected against unauthorized access in the event of loss or theft.

These smart cards allow the creation, copying, modification and deletion of used cryptographic keys. Key management is performed on the Kobra Stick VS using a Digittrade Smart Card (or PKI) and a user PIN completely independent of a PC.

Other optional features

  • • Laser engraving of logos, inventory numbers, scannable QR codes, markings or similar according to customer wishes

  • • USB VID, PID and serial numbers can be defined according to the customer’s wishes

  • • Windows To Go

  • • pSLC memory

DOWNLOADS

Handbuch Kobra VS Stick und VS Drive.pdf

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