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This product has reached end of life (EOL). Support is for existing customers only. 

Encryption for serial Modbus or DNP3

EncryptorPak provides data security for serial point-to-point and multi-drop links that use Modbus, DNP3, and other stream protocols. Features the advanced encryption standard (AES), hash authentication, up to 200 secure links, and two levels of encryption keys. Provides easy installation with no change to existing network configuration.

Flexible serial interface 
Mix or match any combination of RS-232, RS-422, or RS-485 (2- or 4-wire) interfaces via DB-9 or terminal block. 

Mixed mode for seamless operation 
Allows a mix of encrypted and clear traffic over a single link for segmentation or migration purposes. 

Secure login 
Login access for configuration can be restricted and secured by three different levels: Admin, Crypto User, and User.

Activity logs 
Detailed event logs for system activity. 

Technical Specs

Standard IEEE 1711-2010 (Cryptographic Protocol for Cyber Security of Serial Links) 

Cryptographic Suites

Advanced Encryption Standard (AES) 128-bit 
MD5 128-bit hash (RFC 1321) 
SHA-1 160-bit hash (ANSI X9.30-2 and FIPS 180-1 

Secure Serial Links

Up to 200 (simultaneous) 

Encryption Keys

Two-level key management: Key Encrypting Key, Data Key 
Automated re-key of Data Key 


Point-to-Point (P2P) 

Serial-to-Serial Protocols

Modbus RTU / ASCII 
Any byte-oriented protocol in P2P 

Ethernet-to-Serial Protocols

Modbus TCP and UDP 
Modbus RTU/ASCII over TCP and UDP 
DNP3 over TCP 


Local/Remote: 10-pin terminal block 
Remote:DB9 male (RS-232/422/485 software selectable) 
Local: DB9 female (RS-232/422/485 software selectable) 
Mgmt DB9 female (RS-232) 
LAN: RJ45 Ethernet (10/100BaseT) 

Data Rate

300 to 115.2K bps (async)

Data Format 

8N, 8E, 8O, 7E, 7O. One or two stop bits (async)

Web Interface

Login secure levels: Admin, Crypto User, User 

LED Indicators

Power, Ethernet Activity, Secure Link Activity 


3.3VDC Power adapter 


Enclosure: 18 gauge steel 
Weight: 1 lb 
Size: 1 x 8 x 5 inches (2.54 x 20.32 x 12.7 cm) 

Operating Environment 

-40° C to 85° C (-40° F to 185° F) 


2 Years