JPH05151092A - Data protection device - Google Patents
Data protection deviceInfo
- Publication number
- JPH05151092A JPH05151092A JP3342191A JP34219191A JPH05151092A JP H05151092 A JPH05151092 A JP H05151092A JP 3342191 A JP3342191 A JP 3342191A JP 34219191 A JP34219191 A JP 34219191A JP H05151092 A JPH05151092 A JP H05151092A
- Authority
- JP
- Japan
- Prior art keywords
- data
- computer program
- magnetic disk
- processing
- normal sentence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Storage Device Security (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、データ保護装置に係
り、特に磁気ディスク装置に記録するデータのデータ保
護装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data protection device, and more particularly to a data protection device for data recorded on a magnetic disk device.
【０００２】[0002]
【従来の技術】従来の磁気ディスク装置に記録するデー
タのデータ保護方式は、操作員からデータに対するアク
セスをパスワード等による操作員の識別を介して電算機
プログラムが許可又は禁止することにより行っている。2. Description of the Related Art A conventional data protection method for data recorded in a magnetic disk device is carried out by allowing or prohibiting an operator's access to the data by an operator program through identification of the operator by a password or the like. ..
【０００３】[0003]
【発明が解決しようとする課題】この従来の磁気ディス
ク装置に記録するデータのデータ保護方式では、磁気デ
ィスク上へのアクセス規制を電算機プログラムが行って
いるため、電算機プログラムが停止している状態等によ
り磁気ディスク媒体自体を別の電算機プログラムからア
クセスできるという問題点があった。In this conventional data protection method for data recorded in a magnetic disk device, the computer program is stopped because the computer program controls access to the magnetic disk. There is a problem in that the magnetic disk medium itself can be accessed from another computer program depending on the state or the like.
【０００４】[0004]
【発明の目的】本発明は、かかる従来例の有する不都合
を改善し、とくに別の電算機プログラムによるアクセス
に対してもデータ内容の機密を有効に維持し得るデータ
保護装置を提供することを、その目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a data protection device which can improve the disadvantages of the conventional example and can effectively maintain the confidentiality of the data content even when accessed by another computer program. To that end.
【０００５】[0005]
【課題を解決するための手段】本発明では、電算機プロ
グラムの処理開始に先立って機能し磁気ディスク上のデ
ータを暗号化データから平文化データに変換する平文化
処理部と、電算機プログラムの処理の終了前に磁気ディ
スク上のデータを平文化データから暗号化データに変換
する暗号化処理部とを備えている、という構成を採って
いる。これによって前述した目的を達成しようとするも
のである。According to the present invention, a plain culture processing unit that functions prior to the start of processing of a computer program and converts data on a magnetic disk from encrypted data to plain culture data, and a computer program An encryption processing unit that converts the data on the magnetic disk from plain culture data to encrypted data before the end of the processing is adopted. This aims to achieve the above-mentioned object.
【０００６】[0006]
【実施例】以下、本発明の一実施例を図１に基づいて説
明する。この図１に示す実施例は、電算機プログラムの
処理開始に先立って機能し磁気ディスク上のデータを暗
号化データから平文化データに変換する平文化処理部２
と、電算機プログラムの処理の終了前に磁気ディスク上
のデータを平文化データから暗号化データに変換する暗
号化処理部３とを備えている。これを更に詳述すると、
開始点１で電算機プログラムが起動され、平文化処理部
２でデータを記録している磁気ディスク上の暗号化され
ているデータから暗号を外し平文のデータに変換する。
その後、通常の電算機プログラムの処理を行う。電算機
プログラムの処理を終了する時点にて、暗号化処理部３
でデータを記録している磁気ディスク上のデータを暗号
化したデータに変換し、終了点４で電算機プログラムを
終了する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. The embodiment shown in FIG. 1 functions prior to the start of processing of a computer program and converts the data on the magnetic disk from encrypted data to plain culture data.
And an encryption processing unit 3 for converting the data on the magnetic disk from plain culture data to encrypted data before the processing of the computer program is completed. To further elaborate on this,
At the starting point 1, the computer program is activated, and the plaintext processing unit 2 removes the encryption from the encrypted data on the magnetic disk on which the data is recorded and converts it into plaintext data.
After that, the processing of a normal computer program is performed. When the processing of the computer program ends, the encryption processing unit 3
Then, the data on the magnetic disk on which the data is recorded is converted into encrypted data, and at the end point 4, the computer program is ended.
【０００７】[0007]
【発明の効果】以上説明したように本発明によると、電
算機プログラムが作動していないとき、データを記録し
ている磁気ディスク上のデータは暗号化されているた
め、別の電算機プログラムから前記データにアクセスし
てもデータの解読ができないという従来にない優れたデ
ータ保護装置を提供することができる。As described above, according to the present invention, when the computer program is not operating, the data on the magnetic disk on which the data is recorded is encrypted. It is possible to provide an unprecedented excellent data protection device in which the data cannot be decrypted even if the data is accessed.
【図１】本発明の一実施例を示すフローチャートであ
る。FIG. 1 is a flowchart showing an embodiment of the present invention.
２ 平文化処理部 ３ 暗号化処理部 2 Plain Culture Processing Department 3 Encryption Processing Department
Claims (1)
機能し磁気ディスク上のデータを暗号化データから平文
化データに変換する平文化処理部と、前記電算機プログ
ラムの処理の終了前に磁気ディスク上のデータを平文化
データから暗号化データに変換する暗号化処理部とを備
えていることを特徴としたデータ保護装置。1. A flat culture processing unit which functions prior to the start of processing of a computer program and which converts data on a magnetic disk from encrypted data to plain culture data, and a magnetic disk before the end of the processing of the computer program. A data protection device comprising: an encryption processing unit for converting the above data from plain culture data to encrypted data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3342191A JPH05151092A (en) | 1991-11-30 | 1991-11-30 | Data protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3342191A JPH05151092A (en) | 1991-11-30 | 1991-11-30 | Data protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05151092A true JPH05151092A (en) | 1993-06-18 |
Family
ID=18351825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3342191A Withdrawn JPH05151092A (en) | 1991-11-30 | 1991-11-30 | Data protection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05151092A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007102661A (en) * | 2005-10-07 | 2007-04-19 | Sourcenext Corp | Encryption management method and encryption management program for data and file |
-
1991
- 1991-11-30 JP JP3342191A patent/JPH05151092A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007102661A (en) * | 2005-10-07 | 2007-04-19 | Sourcenext Corp | Encryption management method and encryption management program for data and file |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990204 |