Title:
スクランブルにより情報秘匿を行なう通信システムにおける送信装置
Document Type and Number:
Japanese Patent JP3627765
Kind Code:
B2
Abstract:
PURPOSE: To disable the decoding of a scramble pattern from the outside even when field lengths on respective transmission and reception sides are not equal by loading scramble after transmissive data for one packet are made full by embedding a pseudo random number sequence in a section after the end of transmissive data. CONSTITUTION: Transmission data 8 are transmitted by exclusively ORing a bit train generated by a scramble pattern generator 2. When the remaining data of transmission data 8 are less than transmission data for one packet, the excess part of the final packet is filled with the bit string of pseudo random number sent from a pseudo random number generator 3. On the reception side, received data 12 are successively stored in a buffer and only the required part is segmented by watching a field 10a of frame length information, moved to a buffer 5 and outputted by exclusively ORing a bit train generated by a scramble pattern generator 7.
Inventors:
Yutaka Kuno
Application Number:
JP14903695A
Publication Date:
March 09, 2005
Filing Date:
June 15, 1995
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G09C1/00; H04L9/06; H04L9/14; H04L12/70; (IPC1-7): H04L9/06; G09C1/00
Domestic Patent References:
| JP488736A | ||||
| JP2284567A | ||||
| JP5102945A |
Other References:
D.W.Davies and W.L.Price著/上園忠弘 監訳、「ネットワーク・セキュリティ」,第1版,日経BP社,1985年12月5日, P.89-90
Attorney, Agent or Firm:
Takumi Iritono
Yasushi Motoyama
Yasushi Motoyama