JPS58187843U - Computer program security device - Google Patents
Computer program security deviceInfo
- Publication number
- JPS58187843U JPS58187843U JP8339082U JP8339082U JPS58187843U JP S58187843 U JPS58187843 U JP S58187843U JP 8339082 U JP8339082 U JP 8339082U JP 8339082 U JP8339082 U JP 8339082U JP S58187843 U JPS58187843 U JP S58187843U
- Authority
- JP
- Japan
- Prior art keywords
- computer program
- security device
- program security
- data
- word
- 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.)
- Pending
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はこの考案の機密保護装置を有するコンピュータ
システムのブロック図、第２図はこの考案のコンピュー
タ・プログラムの機密保護装置の一実施例を示すブロッ
ク図、第３図は第２図中のデコーダの一例を示す回路図
、第４図は変換操作の一態様を示す説明図である。
５・・・・・・プログラムメモリ、６・・・・・・プロ
グラムメモリデータ変換回路、７・・・・・・デコーダ
、８・・・・・・フリップフロップ、９・・・・・・セ
レクタ。FIG. 1 is a block diagram of a computer system having a security protection device of this invention, FIG. 2 is a block diagram showing an embodiment of the computer program security protection device of this invention, and FIG. 3 is a block diagram of a computer system having a security protection device of this invention. FIG. 4 is a circuit diagram showing an example of a decoder, and FIG. 4 is an explanatory diagram showing one aspect of the conversion operation. 5...Program memory, 6...Program memory data conversion circuit, 7...Decoder, 8...Flip-flop, 9...Selector .
Claims (1)
と、このプログラムメモリの出力のうちの上記１語を解
読命令として、その命令が入力されたことを条件に上記
他のデータを正常データへ変換する暗号解読操作を行な
う回路とを備えることを特徴とするコンピュータ・プロ
グラムの機密保護装置。A program memory in which all data except one word is encrypted, and the above one word of the output of this program memory is used as a decoding command, and on the condition that the command is input, the other data is converted to normal data. A security protection device for a computer program, comprising: a circuit for performing a decoding operation for converting a computer program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8339082U JPS58187843U (en) | 1982-06-07 | 1982-06-07 | Computer program security device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8339082U JPS58187843U (en) | 1982-06-07 | 1982-06-07 | Computer program security device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58187843U true JPS58187843U (en) | 1983-12-13 |
Family
ID=30092402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8339082U Pending JPS58187843U (en) | 1982-06-07 | 1982-06-07 | Computer program security device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58187843U (en) |
-
1982
- 1982-06-07 JP JP8339082U patent/JPS58187843U/en active Pending
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