Title:
【発明の名称】秘密鍵生成方式
Document Type and Number:
Japanese Patent JPH073975
Kind Code:
B2
Abstract:
PURPOSE:To grant the secret keys in a simple way without performing the key control in particular. CONSTITUTION:When a power supply is turned on for registration of the terminals T1-Tn at 8 center A, a random number generating part 1.4 starts to apply the polling to each terminal through the center A and then to assign the time slots so that the UP signals received from the terminals never overlap each other. Therefore the delay measurement control is applied to each terminal. Then the random number value of the part 14 obtained at each terminal when the delay measurement control is complete is defined as a secret key of the relevant terminal. The different types of delay measurement control are always applied to the terminals T1-Tn respectively and therefore the secret keys are proper to each terminal. Based on these secret keys, the open keys and the shared keys are computed at a key computing part 13. The open keys are sent to the center A, and the shared keys are produced from the open keys at the center A.
Inventors:
Hisayoshi Totsuka
Hajime Sato
Hajime Sato
Application Number:
JP2640191A
Publication Date:
January 18, 1995
Filing Date:
February 20, 1991
Export Citation:
Assignee:
CTI Corporation Basic Technology Research Institute
International Classes:
G06F12/14; G06F15/00; G06F21/31; G06F21/44; G06F21/60; G06F21/62; H04L9/06; H04L9/14; (IPC1-7): H04L9/06; G06F12/14; G06F15/00; H04L9/14
Attorney, Agent or Firm:
Kusano Takashi
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