Cryptography – Key management – Having particular key generator
Patent
1991-06-25
1993-08-31
Gregory, Bernarr E.
Cryptography
Key management
Having particular key generator
380 9, 380 10, 380 21, 380 43, 380 49, 380 50, 379 93, 379100, 358443, 358468, H04N 144
Patent
active
052415953
ABSTRACT:
A facsimile equipment including a memory for storing a cipher key data, ten number keys for inputting the cipher key data, a DTMF signal receiving circuit for converting a DTMF signal received through a telephone line into the cipher key data, a controller for controlling the memory to selectively store the cipher key data input by means of the ten number keys or the cipher key data converted by the DTMF signal receiving circuit, a DTMF signal generating circuit for converting the cipher key data stored in the memory into a DTMF signal and generating this DTMF signal to the telephone line, and a controller for scrambling an image data to be transmitted with the cipher key data stored in the memory to provide the transmission data and for descrambling the scrambled image data received with the cipher key data stored in the memory to provide the reception data.
REFERENCES:
patent: 4091423 (1978-05-01), Branscome
patent: 4297727 (1981-10-01), Ogawa et al.
patent: 4989244 (1991-01-01), Naruse et al.
A. G. Konheim, Cryptograhy, A Primer, (John Wiley & Sons, Inc.; 1981; Section 7.4, pp. 288-292).
Brother Kogyo Kabushiki Kaisha
Gregory Bernarr E.
LandOfFree
Communication control section for facsimile equipment having a s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Communication control section for facsimile equipment having a s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communication control section for facsimile equipment having a s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2303853