CN87101040A - The encryption method of floppy disk of storage computation machine software - Google Patents
The encryption method of floppy disk of storage computation machine software Download PDFInfo
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- CN87101040A CN87101040A CN 87101040 CN87101040A CN87101040A CN 87101040 A CN87101040 A CN 87101040A CN 87101040 CN87101040 CN 87101040 CN 87101040 A CN87101040 A CN 87101040A CN 87101040 A CN87101040 A CN 87101040A
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- floppy disk
- software
- encryption method
- disk
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Abstract
The present invention designs a kind of method of encrypting floppy disk, the protection computer program.Its principle is to reject last minute magnetic of floppy disk with needle-shaped tool, makes that a certain magnetic track place has error flag on the disk, on encryption software it is carried out the reading and writing operation then, and the legitimacy of differentiating floppy disk whether.Because anti-copy detection program of the present invention injects user software with transparent mode, in the operational process to the user without any interference.The present invention can protect all COM and EXE file, can also be connected with obj file, forms encryption software.
Description
The invention belongs to the Computer Applied Technology field.
BrP GB2137533 is the method for magnetic on a kind of disk of removing encrypted software, for example removes complex process, cost height with the laser method or the method that sandblasts.With the legitimacy that reaches the difference disk whether BrP GB2131580 is on disk a certain " magnetic track " to be made with special material, makes the common computer magnetic head can only read this " magnetic track ", can not write.Aforementioned calculation machine software enciphering method has certain limitation, and versatility is not strong, for example, can not prevent duplicating of certain high-level software reproduction technology, and encrypted software must not be greater than 64K or 128K etc.
Purpose of the present invention is to use a kind of simple and easy method, is a ROM on the disk of encrypted software, and incorporates the method for user program into encryption software, makes encryption software general and to user transparent.
Principle of the present invention is, with a minimum pin, optional position on floppy disk to be encrypted, standardized point or one section little arc, makes that some magnetic tracks place has error flag on the disk, on encryption software it carried out the reading and writing operation then.If this disk is legal stamper, then error flag will inevitably appear.If the bootlegging dish then error flag can not occur.In view of the above, with encryption software distinguish storage computation machine software floppy disk legitimacy whether.If encryption software is distinguished this floppy disk and illegally duplicated, then encryption software can stop the normal operation of this floppy disk automatically.
In order to make encryption software general and to user transparent, the present invention mixes encryption software mutually with user program, and the topped user program of encryption software is moved to all the other positions in the floppy disk by topped user program, in use, calls in gradually again.Encryption software and user program mixture length figure are as shown in Figure 1.Replacement instruction among the figure shifts out user program exactly, puts into encrypted instruction, then mixed file is write floppy disk.Fig. 2 is the operational flow diagram of encipheror, and the legitimacy of inspection dish among the figure is to realize by operation encrypted instruction section.
The present invention can protect all COM and EXE file, can also be connected with obj file, forms encryption software, and can release under the BASIC environment Jie, and the protection of Jie being released program in BASIC is provided.Because anti-copy detection program of the present invention injects user software with transparent mode, it not only can prevent the bootlegging of various advanced replication programs effectively, and the user is not had any interference in the operational process.
Claims (3)
1, with the legitimacy of differentiating this floppy disk whether a kind of encryption method of floppy disk of storage computation machine software is characterized in that on the floppy disk of software to be stored, makes a ROM, and on encryption software it is carried out reading and writing operations.
2, by the encryption method of the described floppy disk of claim 1, it is characterized in that optional position on the disk of storing software,, constitute ROM with standardized point of needle-shaped tool or one section little arc.
3, by the described encryption method of floppy disk of claim 1, it is characterized in that the topped user program of encryption software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101040 CN87101040A (en) | 1987-05-18 | 1987-05-18 | The encryption method of floppy disk of storage computation machine software |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101040 CN87101040A (en) | 1987-05-18 | 1987-05-18 | The encryption method of floppy disk of storage computation machine software |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87101040A true CN87101040A (en) | 1988-12-07 |
Family
ID=4813131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87101040 Pending CN87101040A (en) | 1987-05-18 | 1987-05-18 | The encryption method of floppy disk of storage computation machine software |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87101040A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294568C (en) * | 1996-12-19 | 2007-01-10 | 松下电器产业株式会社 | Optical disk recording reproducing device |
-
1987
- 1987-05-18 CN CN 87101040 patent/CN87101040A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294568C (en) * | 1996-12-19 | 2007-01-10 | 松下电器产业株式会社 | Optical disk recording reproducing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |