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INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND PROGRAM

外国特許コード F170009083
整理番号 (S2016-0033-N0)
掲載日 2017年5月30日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2016JP080351
国際公開番号 WO 2017065209
国際出願日 平成28年10月13日(2016.10.13)
国際公開日 平成29年4月20日(2017.4.20)
優先権データ
  • 特願2015-204607 (2015.10.16) JP
発明の名称 (英語) INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND PROGRAM
発明の概要(英語) An information processing system (1) equipped with multiple storage devices (10). The information processing system (1) selects, from among multiple different device groups associated with multiple different points in time, one device group associated with a time point that is included in a prescribed period containing the current point in time, and saves, in N storage devices included in the selected device group, N pieces of distributed data generated from confidential data according to a secret sharing scheme. The information processing system (1) executes a restoration process with respect to one device group among the multiple device groups, and if the restoration fails, the information processing system executes the restoration process with respect to a device group (among the multiple device groups) associated with a point in time prior to the point in time associated with the device group from which the failure originated.
特許請求の範囲(英語) [claim1]
1. As for M (M, integer of 2 or more is displayed) being information processing system has the storage unit,
From the restricted data, following to secret dispersed method, at the same time N (as for N, 2 or more integer of M or less is displayed) the formation expedient which forms the dispersed data and,
The point in time when plural differs and the respective association and others [re] it is from midst of the device group where plural differs, the point in time when is included in the period with point in time before just the specified time even from present point in time and the aforementioned present point in time and the association and others [re] it is to select one device group, at the same time each one of the aforementioned plural device groups, as for C (C where it is selected from midst of aforementioned M storage units, above N integer of M or less is displayed) to include the storage unit, the description above N which is included in the device group which is selected in the storage unit the description above N which is formedThe retention expedient which retains the dispersed data respectively and,
When restoration processing is executed vis-a-vis one device group among the aforementioned plural device groups, the aforementioned restoration processing, from the offer data which was offered N which is included in the aforementioned device group in compliance with thing and the aforementioned request to which requires at least respectively the aforementioned dispersed data of the storage unit of portion of the storage unit follows to the aforementioned secret dispersed method and restoring the aforementioned restricted data and, includes, the aforementioned restoration fails, the device group and the association and others [re] which become, the basis of the aforementioned failure among the aforementioned plural device groups it is even from point in time point in time before and the association and othersThe restoration expedient which executes the aforementioned restoration processing the [re] it is vis-a-vis the device group and,
It has, information processing system.
[claim2]
2. Being information processing system of statement in claim 1,
As for the aforementioned retention expedient, information and relation of the input which is input by the user attaching, as it accepts retention request, when it can accept the aforementioned retention request, it sets the aforementioned plural device groups the aforementioned retention request the association and others [re] it is on the basis of the information of the aforementioned input,
As for the aforementioned restoration expedient, information and relation of the input which is input by the user attaching, as it accepts restoration request, when it can accept the aforementioned restoration request, it sets the aforementioned plural device groups the aforementioned restoration request the association and others [re] it is on the basis of the information of the aforementioned input, information processing system.
[claim3]
3. Claim 1 or being information processing system of statement in claim 2,
As for the aforementioned plural device groups, the aforementioned plural points in time and the respective association and others [re] it is information of device ranking information and the aforementioned input to which plural differs C it is set the information ranking relationship to which the ranking where differs is beforehand decided and, of on the basis, the aforementioned device ranking information, at least the storage unit and the ranking where the description above of some of aforementioned M storage units at least the storage unit of part is granted respectively and, is the information which is displayed, information processing system.
[claim4]
4. Claim 1 or being information processing system of statement in claim 2,
The aforementioned plural device groups are set at least the storage unit and the ranking where the description above of some of aforementioned M storage units at least the storage unit of part is granted respectively and, device ranking information and the aforementioned plural points in time which are displayed and the respective association and others [re] it is the information ranking relationship to which plural differs and, of on the basis, relationship of the aforementioned information ranking, information of the aforementioned input C it is the relationship to which the ranking where differs is beforehand decided, information processing system.
[claim5]
5. Claim either 1 or claim 4 being information processing system of statement in one section,
The aforementioned restricted data from the other restricted data which differs from the aforementioned restricted data following to secret dispersed method, is the data which includes the information which displays the plural storage units where the plural dispersed data which are formed are respectively retained, information processing system.
[claim6]
6. Claim 1 or either of claim 5 being information processing system of statement in one section,
As the aforementioned restoration expedient is input by the user and at the same time accepts the period information which displays period, the point in time when it is included in the period when the period information which the device group which becomes the object which executes the aforementioned restoration processing, in the aforementioned plural device groups, the description above is accepted displays and the association and others [re] it is it limits to the device group, information processing system.
[claim7]
7. Claim 1 or either of claim 6 being information processing system of statement in one section,
The aforementioned retention expedient retains as information of the identification is formed the description above the device group and the association and others [re] which are selected it is on the basis of point in time, the description above N the description above is formed information and relation of the identification which attaching each one of the dispersed data, information processing system.
[claim8]
8. Being information processing system of statement in claim 7,
The aforementioned retention expedient forms the information which differs to every storage unit the description above N which is included in the device group which is selected vis-a-vis the storage unit, as information of the aforementioned identification information processing system.
[claim9]
9. Claim either 1 or claim 8 being information processing system of statement in one section,
As for several C of the storage units which are included in the aforementioned device group, the extent where the password which is used for the certification of the user is easy to specify it is set by many number,
The aforementioned retention expedient the description above from midst of C storage units which are included in the device group which is selected N selects the storage unit to random, the description above N which is selected the description above N which is formed retains the dispersed data respectively in the storage unit,
The aforementioned restoration processing includes, N which forms particular combination N which is selected from C offer data which was offered in compliance with thing and the aforementioned request which require respectively the aforementioned dispersed data of C storage units which are included in the aforementioned device group combination of the offer data vis-a-vis respectively, from the offer data following to the aforementioned secret dispersed method, restoring the aforementioned restricted data and, information processing system.
[claim10]
10. Claim 1 or either of claim 9 being information processing system of statement in one section,
As for demand for the aforementioned dispersed data for the aforementioned storage unit, information of the formation which is formed on the basis of the information of the input which is input the information processing equipment to the aforementioned storage unit, by the information and the user of the point in time identification which identifies point in time or the information of the aforementioned input and, by transmitting the offer request which is included the action,
From the aforementioned information processing equipment, also information of the aforementioned point in time identification passes, at the same time when, information of aforementioned input or information of the aforementioned formation differs, offer demand above the number of specified thresholds was transmitted during specified decision time, the prohibition expedient which prohibits the offer of the aforementioned offer data which responds to the aforementioned request from the aforementioned information processing equipment is had, information processing system.
[claim11]
11. As for M (M, integer of 2 or more is displayed) the storage unit and being the information processing equipment which communication possibly is connected,
From the restricted data, following to secret dispersed method, at the same time N (as for N, 2 or more integer of M or less is displayed) the formation expedient which forms the dispersed data and,
The point in time when plural differs and the respective association and others [re] it is from midst of the device group where plural differs, the point in time when is included in the period with point in time before just the specified time even from present point in time and the aforementioned present point in time and the association and others [re] it is to select one device group, at the same time each one of the aforementioned plural device groups, as for C (C where it is selected from midst of aforementioned M storage units, above N integer of M or less is displayed) to include the storage unit, the description above N which is included in the device group which is selected in the storage unit the description above N which is formedThe retention expedient which retains the dispersed data respectively and,
When restoration processing is executed vis-a-vis one device group among the aforementioned plural device groups, the aforementioned restoration processing, from the offer data which was offered N which is included in the aforementioned device group in compliance with thing and the aforementioned request to which requires at least respectively the aforementioned dispersed data of the storage unit of portion of the storage unit follows to the aforementioned secret dispersed method and restoring the aforementioned restricted data and, includes, the aforementioned restoration fails, the device group and the association and others [re] which become, the basis of the aforementioned failure among the aforementioned plural device groups it is even from point in time point in time before and the association and othersThe restoration expedient which executes the aforementioned restoration processing the [re] it is vis-a-vis the device group and,
It has, the information processing equipment.
[claim12]
12. As for M (M, integer of 2 or more is displayed) being the information processing method using the storage unit,
From the restricted data, following to secret dispersed method, at the same time N (as for N, 2 or more integer of M or less is displayed) to form the dispersed data,
The point in time when plural differs and the respective association and others [re] it is from midst of the device group where plural differs, the point in time when is included in the period with point in time before just the specified time even from present point in time and the aforementioned present point in time and the association and others [re] it is to select one device group, at the same time each one of the aforementioned plural device groups, as for C (C where it is selected from midst of aforementioned M storage units, above N integer of M or less is displayed) to include the storage unit, the description above N which is included in the device group which is selected in the storage unit the description above N which is formedThe dispersed data is retained respectively,
When restoration processing is executed vis-a-vis one device group among the aforementioned plural device groups, the aforementioned restoration processing, from the offer data which was offered N which is included in the aforementioned device group in compliance with thing and the aforementioned request to which requires at least respectively the aforementioned dispersed data of the storage unit of portion of the storage unit follows to the aforementioned secret dispersed method and restoring the aforementioned restricted data and, includes, the aforementioned restoration fails, the device group and the association and others [re] which become, the basis of the aforementioned failure among the aforementioned plural device groups it is even from point in time point in time before and the association and othersThe aforementioned restoration processing is executed the [re] it is vis-a-vis the device group, information processing method.
[claim13]
13. M (M displays the integer of 2 or more) the storage unit and in the information processing equipment which communication possibly is connected,
From the restricted data, following to secret dispersed method, at the same time N (as for N, 2 or more integer of M or less is displayed) to form the dispersed data,
The point in time when plural differs and the respective association and others [re] it is from midst of the device group where plural differs, the point in time when is included in the period with point in time before just the specified time even from present point in time and the aforementioned present point in time and the association and others [re] it is to select one device group, at the same time each one of the aforementioned plural device groups, as for C (C where it is selected from midst of aforementioned M storage units, above N integer of M or less is displayed) to include the storage unit, the description above N which is included in the device group which is selected in the storage unit the description above N which is formedThe dispersed data is retained respectively,
When restoration processing is executed vis-a-vis one device group among the aforementioned plural device groups, the aforementioned restoration processing, from the offer data which was offered N which is included in the aforementioned device group in compliance with thing and the aforementioned request to which requires at least respectively the aforementioned dispersed data of the storage unit of portion of the storage unit follows to the aforementioned secret dispersed method and restoring the aforementioned restricted data and, includes, the aforementioned restoration fails, the device group and the association and others [re] which become, the basis of the aforementioned failure among the aforementioned plural device groups it is even from point in time point in time before and the association and othersThe program which executes the aforementioned restoration processing the [re] it is vis-a-vis the device group makes processing execute.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOHOKU UNIVERSITY
  • 発明者(英語)
  • HASEGAWA SHINGO
  • IWAZAKI JUNYA
  • SAKAI MASAO
  • TAKAHASHI DAIKI
  • FUKUMITSU MASAYUKI
国際特許分類(IPC)
指定国 (WO201765209)
National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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