Title:
SECRET DATA DISTRIBUTING DEVICE
Document Type and Number:
Japanese Patent JP3394569
Kind Code:
B2
Abstract:
PURPOSE: To provide the secret data distributing device which can distribute secret data with a small amount of information.
CONSTITUTION: This device is equipped with a secret data generating device 1 which generates 1st secret data with a unidirectional function (f), 2nd secret data with a unidirectional function (g), and 3rd secret data with an amalgamation function (h), a secret data transmitting means 3 which transmits (i)th 1st secret data Vi and (j)th 2nd secret data Vj at a request for (i)th-(j)th 3rd secret data, and a secret data reproducing device 2 which reproduces 1st secret data after the (i)th data from 1st secret data Ui with the unidirectional function (f), 2nd secret data before (j)th data from 2nd secret data Vj with the unidirectional function (g), and (i)th-(j)th 3rd secret data with the amalgamation function (h).
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Inventors:
Makoto Tatebayashi
Application Number:
JP22176493A
Publication Date:
April 07, 2003
Filing Date:
September 07, 1993
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G09C1/00; H04L9/08; (IPC1-7): H04L9/08
Other References:
Ｐａｓｓｗｏｒｄ Ａｕｔｈｅｎｔｉｃａｔｉｏｎ ｗｉｔｈ Ｉｎｓｅｃｕｒｅ Ｃｏｍｍｕｎｉｃａｔｉｏｎ，Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ ｏｆ ｔｈｅ ＡＣＭ，１９８１年，Ｖｏｌ．２４ Ｎｏ．１１，ｐ．７７０−７７２
Attorney, Agent or Firm:
Masamichi Matsuda
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