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Protection for local computers or networks


  • Network support with one CRYPTO-BOX per network. Individual network license counter configuration for every CRYPTO-BOX USB via License Control System (LCS).

  • Supports the SmarxOS Application Framework, the all-in-one security solution which protects software, data and provides flexible end user management, including remote updates.

  • Remote programmable with Remote Update Management System (RUMS), incl. network license counter reprogramming.

  • The AES/Rijndael algorithm is fully implemented in the USB dongle. RSA support on the driver level for digital signatures and access control systems.

  • Individual serial number for every CRYPTO-BOX XS.

  • Supports operating systems Windows 32/64 bit, MacOS X, Linux 32/64. No drivers needed for Linux and Mac OS.

  • Automatic protection of Windows .EXE or .DLL files or implementation with API into the source code. Libraries and samples for all common compilers such as .NET, Delphi, Java, Qt are included.

  • 4 to 64 kBytes secure memory for licensing information.

  • The extremely short and robust metal case shields electronic circuitry perfectly.

  • Also available in different colors and customized product labeling.

Related Documents:

MPI to Smarx OS Conversion Kit MPI to Smarx OS Conversion Kit

Converting the CRYPTO-BOX from MPI to Smarx OS

Smarx OS Compendium 2019 Smarx OS Compendium 2019

Manual for the CRYPTO-BOX System

AutoCrypt AutoCrypt

Automatic Software Protection

Smarx OS CBIOS API Reference Smarx OS CBIOS API Reference

Basic API to access to the CRYPTO-BOX

DO API Reference DO API Reference

Smarx OS DataObjects API for C/C++ and Delphi

RFP API Reference RFP API Reference

Extended API for updating the CRYPTO-BOX

Driver Installation Driver Installation

End-user installation of the CRYPTO-BOX

CRYPTO-BOX Revision 2: Technical Data CRYPTO-BOX Revision 2: Technical Data


All Documents

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AutoCrypt AutoCrypt

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Professional Protection Kit Professional Protection Kit

Developer kit for protection and licensing

RUMS - Remote Update and Maintenance RUMS - Remote Update and Maintenance

License Management

LCS - License Control System LCS - License Control System

Flexible licensing in networks

All Products All Solutions

More information about CRYPTO-BOX® XS

Logos and Certificates

Windows certifiedMac certifiedLinux certifiedMicrosoft certifiedISO 9001:2015 certified
CE sign USB certified FC Sign RoHS Please recycle


Comparison Table of the CRYPTO-BOX Variants





Controller chip RISC-smartcard processor with USB interface
Controller chip certification EAL4+, WHQL (Microsoft)
Firmware proprietary MARX
Supported operating systems Windows, Linux, macOS, iOS*, Android*
(*network mode)
AES/Rijndael On-Chip
Maximal AES Key Slots 8 (more on request) 3 3
(6 keys - in hardware)

(1 key - driver level)
Network support
(floating license)

(floating license)

(without license management)
Unique serial number  -
(same serial number for each unit per order)
Memory size (total) 72 kByte, ca. 30 kByte free 4, 32, 64 kByte 4 kByte
Internal memory read/write performance ca. 80 kByte/second ca. 12 kByte/second
User-/administrator password up to 16 kByte in length
Case & LED designer metal case, zinc cast,
LED showing the operating state, eye for key ring;
custom case possible 
Connector USB Type A / USB-C Type
Memory programming typically up to 1 million cycles: 100,000 guaranteed
Data life cycle  minimum 10 years
Conformity and certifications CE, FCC, RoHS, USB

14 x7 x 32,5 mm / 0.55" x 0.28" x 1.28" (USB Type A)

11 x 4 x 22,5 mm / 0.43" x 0.16" x 0.89" (USB-C Type)


7,5g / 0.24oz (USB Type A)

3g / 0.11oz (USB-C Type)

Temperature range -10°C to + 70°C / 14°F to 158°F
Humidity range 0% up to 95% relative humidity


Copyright © 2002, 2019 MARX® CryptoTech LP - Last Update 12 September 2019