Cryptography – Key management – Having particular key generator
Patent
1991-05-31
1992-11-24
Cangialosi, Salvatore
Cryptography
Key management
Having particular key generator
379100, H04K 100, H04N 7167, H04M 1100
Patent
active
051669773
ABSTRACT:
A secure facsimile interface includes a main CPU (30) having associated therewith a bulk memory (32) for storing transfer data between a Group 3 facsimile machine (20) and a secure encryptor/decryptor telephone unit (10) that operates in accordance with MIL-STD-188-161. The main CPU (30) interfaces with the Group 3 machine (20) through an RJ11 port. A TELCO simulator (42) generates the telephone signals necessary to communicate with the Group 3 machine (20) and a FAX interface (36) is operable to interface between the audio and digital domain, and with the main CPU (30). An RS232 interface is connected to the encryptor/decryptor telephone unit (10) with a bit stream processor (40) operable to interface with the protocol thereof. A forward error correction processor (38) is provided for interfacing between the bit stream processor (40) and the main CPU (30) and selectively providing forward error correction detection of incoming data and encoding error correction information on outgoing data on a substantially real time basis. Data is received from the encryptor/decryptor telephone unit (10) on a page basis and stored in the memory (32) for later transfer to the Group 3 machine (20). In the opposite direction, data is received from the Group 3 machine (20) and stored on a page basis in the memory (32) for later transfer to the secure encryptor/decryptor telephone unit.
REFERENCES:
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patent: 4985919 (1991-01-01), Naruse et al.
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patent: 5008926 (1991-04-01), Misholi
Faxx Master Users Manual, Telem International, Inc., Jan. 1990.
Cangialosi Salvatore
Encrypto, Inc.
Howison Gregory M.
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