情報処理装置、情報処理方法及びプログラム

Information processor, information processing method and program

Abstract

【課題】復号条件が満たされない限り暗号化データの復号を抑制する暗号化システムでは、復号イネーブル時間が復号条件として指定されるが、遅延した復号の効力が独立した受信者に与えられるものはなかった。そこで、遅延復号の可能化及び供給を行う方法及び装置を開示する。 【解決手段】暗号化情報や他の情報を受信する工程と、暗号化情報を他の情報を用いて、指定される時点よりも早くない時点で復号する工程とを備える。他の情報は、時点を示すデータを含む。 【選択図】図1
PROBLEM TO BE SOLVED: To provide a method and device for enabling and supplying delayed decoding, since delayed decoding effects have not been applied to an independent receiver even though a decoding-enable time is designated as the decoding conditions, in an encryption system for suppressing the decoding of encrypted data, as long as decoding conditions are not fulfilled. SOLUTION: This information processing method comprises a process of receiving encrypted information or the other information and a process of decoding the encrypted information at a time which is not earlier than a designated time by using the other information. The other information includes data showing the point of time. COPYRIGHT: (C)2006,JPO&NCIPI

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Patent Citations (6)

    Publication numberPublication dateAssigneeTitle
    JP-2005514874-AMay 19, 2005コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィKoninklijke Philips Electronics N.V.時間依存条件付きアクセスを供給するシステム
    US-2002023209-A1February 21, 2002Lateca Computer Inc. N.V.UnitedEncryption and decryption of digital messages in packet transmitting networks
    US-2002136408-A1September 26, 2002Garcia Francisco AndeyroMethod based on an algorithm capable of being graphically implemented to be used for the generation or filtering of data sequences and crytographic applications
    US-5365589-ANovember 15, 1994Gutowitz Howard AMethod and apparatus for encryption, decryption and authentication using dynamical systems
    US-5677956-AOctober 14, 1997Innovative Computing Group IncMethod and apparatus for data encryption/decryption using cellular automata transform
    WO-0133767-A2May 10, 2001Quikcat.Com, Inc.Method and apparatus for data encryption/decryption using a dynamical system

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    Publication numberPublication dateAssigneeTitle