Historical info on the GSP 8191
Please note that GSP 8191 is no longer available. These specs are
provided for historical information only. Enjoy.
Specifications:
- Modem
- ITU V.32bis (14,400 bits/sec)
- Interfaces
- Two buttons (Go Secure, Go Clear)
- Graphic LCD
- Red/Green LED
- External power supply (12-18 VDC, 700 mA)
- Two RJ11 modular phone jacks (Phone, Line)
- Power
- Input Voltage: 110 volts AC, 50-60 Hz
- Approvals
- FCC, part 15 and 68
- Industry Canada CS-03
- Warranty
- Software Upgrades
- One year of upgrades included in purchase price
- Voice Modes
- Secure Mode Speech Compression
- International standard GSM 06.10 full rate speech transcoding (13,000
bits/sec)
Notes:
- Specifications subject to change without notice.
- Government regulations apply for export license
- Completing the circle of secure communication requires the receiving
end of your call to also have a GSP8191 unit connected to their phone.
Cryptographic Overview:
- Unique session key generated for each conversation using Diffie-Hellman
exponential key exchange (2048 bit modulus) (U.S. Patent No. 4,200,770
licensed by Cylink Corporation)
- Defense against "man in the middle" active attack using interleave
protocol combined with voice verification of six digit key name derived
from the public exponentials.
- Hardware Random number generator based on Johnson (thermal) noise.
- Three Key Triple-DES (168-bit key), operating in modified counter mode.
- No "Back Door", "Key Escrow" or "Key Recovery".
- Open standard. Full protocol details available in PDF
format.
Last Updated March 15, 1997