INFORMATION PROCESSING DEVICE, FILE MANAGEMENT SYSTEM, AND FILE MANAGEMENT PROGRAM
To prevent information leakage.SOLUTION: A processing unit 13 of an information processing device 10 disperses an original file 1, so as to be decryptable, into a first dispersed file 2 and a second dispersed file 3 (P1), stores the first dispersed file 2 in a nonvolatile first storage unit 11 (P2),...
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Format | Patent |
Language | English Japanese |
Published |
08.04.2021
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Abstract | To prevent information leakage.SOLUTION: A processing unit 13 of an information processing device 10 disperses an original file 1, so as to be decryptable, into a first dispersed file 2 and a second dispersed file 3 (P1), stores the first dispersed file 2 in a nonvolatile first storage unit 11 (P2), and stores the second dispersed file 3 in an external storage device 20 (P3). When receiving a decryption request, the processing unit 13 decrypts the original file 1 from the second dispersed file 3 stored in the external storage device 20 and the first dispersed file 2 stored in the first storage unit 11 (P4), and stores the original file in a volatile second storage unit 12 (P5). The processing unit 13 executes a detection process for detecting a file 4 of a management object file format predetermined as the management object of a file management process from the first storage unit 11 at prescribed timing (P6), and outputs the detection result 5 (P7).SELECTED DRAWING: Figure 1
【課題】情報漏洩を防止する。【解決手段】情報処理装置10の処理部13は、原ファイル1を復号可能に第1分散ファイル2と第2分散ファイル3とに分散し(P1)、第1分散ファイル2を不揮発性の第1記憶部11に記憶させ(P2)、第2分散ファイル3を外部記憶装置20に記憶させる(P3)。処理部13は、復号要求を受け付けると、外部記憶装置20が記憶する第2分散ファイル3と第1記憶部11が記憶する第1分散ファイル2とから原ファイル1を復号し(P4)、揮発性の第2記憶部12に記憶させる(P5)。処理部13は、所定のタイミングで、ファイル管理処理による管理対象として予め定めた管理対象ファイル形式のファイルであるファイル4を第1記憶部11から検出する検出処理を実行し(P6)、検出結果5を出力する(P7)。【選択図】図1 |
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AbstractList | To prevent information leakage.SOLUTION: A processing unit 13 of an information processing device 10 disperses an original file 1, so as to be decryptable, into a first dispersed file 2 and a second dispersed file 3 (P1), stores the first dispersed file 2 in a nonvolatile first storage unit 11 (P2), and stores the second dispersed file 3 in an external storage device 20 (P3). When receiving a decryption request, the processing unit 13 decrypts the original file 1 from the second dispersed file 3 stored in the external storage device 20 and the first dispersed file 2 stored in the first storage unit 11 (P4), and stores the original file in a volatile second storage unit 12 (P5). The processing unit 13 executes a detection process for detecting a file 4 of a management object file format predetermined as the management object of a file management process from the first storage unit 11 at prescribed timing (P6), and outputs the detection result 5 (P7).SELECTED DRAWING: Figure 1
【課題】情報漏洩を防止する。【解決手段】情報処理装置10の処理部13は、原ファイル1を復号可能に第1分散ファイル2と第2分散ファイル3とに分散し(P1)、第1分散ファイル2を不揮発性の第1記憶部11に記憶させ(P2)、第2分散ファイル3を外部記憶装置20に記憶させる(P3)。処理部13は、復号要求を受け付けると、外部記憶装置20が記憶する第2分散ファイル3と第1記憶部11が記憶する第1分散ファイル2とから原ファイル1を復号し(P4)、揮発性の第2記憶部12に記憶させる(P5)。処理部13は、所定のタイミングで、ファイル管理処理による管理対象として予め定めた管理対象ファイル形式のファイルであるファイル4を第1記憶部11から検出する検出処理を実行し(P6)、検出結果5を出力する(P7)。【選択図】図1 |
Author | YOKOZAWA HIROSHI HIRASHIRO ITARU TORIMARU HIROSHI ISHIDERA NOBUTAKA |
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DocumentTitleAlternate | 情報処理装置、ファイル管理システム、及びファイル管理プログラム |
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Snippet | To prevent information leakage.SOLUTION: A processing unit 13 of an information processing device 10 disperses an original file 1, so as to be decryptable,... |
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Title | INFORMATION PROCESSING DEVICE, FILE MANAGEMENT SYSTEM, AND FILE MANAGEMENT PROGRAM |
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