Although the bat file is easy to use, its security is too fragile
Anyone can open it and view it or even modify the contents.
Is there any way to not convert .bat to .exe or .com or something, or .bat files
But others can't view and modify the content? ? ?
Is there anything self-encrypted?
Experts can give you a solution
The current discussion plan is as follows:
1. Scheme of inserting Unicode feature strings into batch code
Effective for notepad and other programs that use IsTextUnicode functions to identify encoding types
Invalid for programs that do not use the IsTextUnicode function, such as type/edit/EditPlus/UltraEdit.
2. Add Unicode endianness mark (BOM) to the batch code header
(zxcv)
Effective for Unicode encoding programs such as Notepad, Word, UltraEdit, and type.
Invalid for programs that do not support Unicode encoding, such as edit/WinRAR internal viewer.
3. The solution to replace the carriage return line break of the batch code with carriage return
It is valid for editors that identify carriage return line breaks, etc.
4. A solution to perform dictionary conversion of batch code
The code plaintext is generated dynamically when running, so this solution has nothing to do with the editor;
BAT file encryption method (better than the Bat2Com software <because that software does not support Chinese>)
The method is:
Open "Notepad" and write the beginning of the file into the following statement
for /l %%a in (1,1,10) do ren *.jpg %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a
When the Notepad program saves a newly created document, if the encoding type is not specified, it will use the default ANSI type (for the Chinese version, the corresponding GB code is the corresponding one).
When opening a created document, it will analyze the encoding type of the document. It first determines whether there is a BOM (Byte Order Mark, endian mark, length 2 to 3 bytes), and if so, determine the encoding type based on its content, FF, FE (Unicode), FE, FF (Unicode big endian), EF, BB, BF (UTF-8) [1].
Because in fact, there are many non-ANSI-encoded documents that do not have any BOM "plain text", these documents cannot be simply judged as ANSI-encoded. It is necessary to use a series of statistical algorithms to guess document encoding based on the content of the document. Notepad uses the IsTextUnicode function to determine whether it is Unicode/Unicode big endian encoding, and uses IsTextUTF8 to determine whether it is UTF8 encoding.
But since it is a statistical algorithm, misjudgment is inevitable, especially when the document content is too short, the probability of such misjudgment will increase significantly because the sample capacity is too small. For example, the famous joke that Microsoft has a grudge against China Unicom is that when Notepad opens an ANSI coded document with only the word "China Unicom", the IsTextUTF8 function misjudged it as UTF8 encoding [2]; the same misjudgment also occurs on the IsTextUnicode function. For example, a document with a 4335 structure such as "this app can break" will be misjudged as Unicode encoding [3][4].
It should be noted that the possibility of this misjudgment is based on the premise that the text is short and its byte bit characteristics are not disturbed. If the above text is slightly modified (even if it is just an input), misjudgment is difficult to happen again.
The special feature of the Yuanyong630 brother scheme is that its byte string not only has Unicode characteristics, but also reaches 1288 bytes very long, which means that its Unicode characteristics are very strong, so it can resist the interference of some shorter Unicode characteristics strings, which is determined by statistical laws. However, when the interference chain is a little longer, the characteristics of Unicode will be significantly interfered until they are recognized as non-Unicode by the IsTextUnicode function. Therefore, some friends always fail to test successfully, which should be related to the length and content of the additional batch code. You can test the code in [5].
Because other editors (such as Word / Wordpad / EditPlus/ UltraEdit) use the updated encoding type judgment algorithm, it has improved a lot in Unicode judgment, and UTF8’s judgment is still not satisfactory. But because the algorithm does not exist theoretically completely accurately, we can only rely on avoiding using non-ANSI documents without BOM, or manually specifying the encoding type when opening the document.
In addition, if you save these files that misjudged encoding types using Notepad, it will be difficult to recover. If saved using misjudgment encoding, the original document will be marked with a BOM, and the original document will no longer be observed using other editors. If saved using ANSI encoding, the original document will be converted as a Unicode document, and the possibility of restoration is close to zero.
[1] Introduction to Unicode
/neutronstar/blog//tag/encoding
[2] Why does Microsoft have a grudge against China Unicom
/localvar/archive/2005/07/12/
[3] Notepad bug? Encoding issue?
/cumpsd/archive/2004/02/27/
[4] Bush Hid The Facts
/comments/16341/Bush_Hid_The_Facts
[5]
For the method of changing 0d 0a to 0a, it is better to change it to 0d . If you change the carriage return line break to only carriage return but not line break, the text of the current line will be overwritten by text lines without line breaks, and overwrite the overlay repeatedly. If you add a comment text to the last line of the batch with a sentence length greater than all the above lines, then this comment will only be displayed in the end.
This method is effective for EDIT and TYPE, so it was once popular in the DOS era. However, this solution is similar to Yuanyong630's solution, but the specific text processing mechanism for a specific text processor is not applicable to all platform environments.
As for other encryption methods, they also have their own shortcomings, and it is difficult to meet the requirements of software engineering. .
BAT encryption tool.rar
Anyone can open it and view it or even modify the contents.
Is there any way to not convert .bat to .exe or .com or something, or .bat files
But others can't view and modify the content? ? ?
Is there anything self-encrypted?
Experts can give you a solution
The current discussion plan is as follows:
1. Scheme of inserting Unicode feature strings into batch code
Effective for notepad and other programs that use IsTextUnicode functions to identify encoding types
Invalid for programs that do not use the IsTextUnicode function, such as type/edit/EditPlus/UltraEdit.
2. Add Unicode endianness mark (BOM) to the batch code header
(zxcv)
Effective for Unicode encoding programs such as Notepad, Word, UltraEdit, and type.
Invalid for programs that do not support Unicode encoding, such as edit/WinRAR internal viewer.
3. The solution to replace the carriage return line break of the batch code with carriage return
It is valid for editors that identify carriage return line breaks, etc.
4. A solution to perform dictionary conversion of batch code
The code plaintext is generated dynamically when running, so this solution has nothing to do with the editor;
BAT file encryption method (better than the Bat2Com software <because that software does not support Chinese>)
The method is:
Open "Notepad" and write the beginning of the file into the following statement
Copy the codeThe code is as follows:
for /l %%a in (1,1,10) do ren *.jpg %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a %%a
When the Notepad program saves a newly created document, if the encoding type is not specified, it will use the default ANSI type (for the Chinese version, the corresponding GB code is the corresponding one).
When opening a created document, it will analyze the encoding type of the document. It first determines whether there is a BOM (Byte Order Mark, endian mark, length 2 to 3 bytes), and if so, determine the encoding type based on its content, FF, FE (Unicode), FE, FF (Unicode big endian), EF, BB, BF (UTF-8) [1].
Because in fact, there are many non-ANSI-encoded documents that do not have any BOM "plain text", these documents cannot be simply judged as ANSI-encoded. It is necessary to use a series of statistical algorithms to guess document encoding based on the content of the document. Notepad uses the IsTextUnicode function to determine whether it is Unicode/Unicode big endian encoding, and uses IsTextUTF8 to determine whether it is UTF8 encoding.
But since it is a statistical algorithm, misjudgment is inevitable, especially when the document content is too short, the probability of such misjudgment will increase significantly because the sample capacity is too small. For example, the famous joke that Microsoft has a grudge against China Unicom is that when Notepad opens an ANSI coded document with only the word "China Unicom", the IsTextUTF8 function misjudged it as UTF8 encoding [2]; the same misjudgment also occurs on the IsTextUnicode function. For example, a document with a 4335 structure such as "this app can break" will be misjudged as Unicode encoding [3][4].
It should be noted that the possibility of this misjudgment is based on the premise that the text is short and its byte bit characteristics are not disturbed. If the above text is slightly modified (even if it is just an input), misjudgment is difficult to happen again.
The special feature of the Yuanyong630 brother scheme is that its byte string not only has Unicode characteristics, but also reaches 1288 bytes very long, which means that its Unicode characteristics are very strong, so it can resist the interference of some shorter Unicode characteristics strings, which is determined by statistical laws. However, when the interference chain is a little longer, the characteristics of Unicode will be significantly interfered until they are recognized as non-Unicode by the IsTextUnicode function. Therefore, some friends always fail to test successfully, which should be related to the length and content of the additional batch code. You can test the code in [5].
Because other editors (such as Word / Wordpad / EditPlus/ UltraEdit) use the updated encoding type judgment algorithm, it has improved a lot in Unicode judgment, and UTF8’s judgment is still not satisfactory. But because the algorithm does not exist theoretically completely accurately, we can only rely on avoiding using non-ANSI documents without BOM, or manually specifying the encoding type when opening the document.
In addition, if you save these files that misjudged encoding types using Notepad, it will be difficult to recover. If saved using misjudgment encoding, the original document will be marked with a BOM, and the original document will no longer be observed using other editors. If saved using ANSI encoding, the original document will be converted as a Unicode document, and the possibility of restoration is close to zero.
[1] Introduction to Unicode
/neutronstar/blog//tag/encoding
[2] Why does Microsoft have a grudge against China Unicom
/localvar/archive/2005/07/12/
[3] Notepad bug? Encoding issue?
/cumpsd/archive/2004/02/27/
[4] Bush Hid The Facts
/comments/16341/Bush_Hid_The_Facts
[5]
For the method of changing 0d 0a to 0a, it is better to change it to 0d . If you change the carriage return line break to only carriage return but not line break, the text of the current line will be overwritten by text lines without line breaks, and overwrite the overlay repeatedly. If you add a comment text to the last line of the batch with a sentence length greater than all the above lines, then this comment will only be displayed in the end.
This method is effective for EDIT and TYPE, so it was once popular in the DOS era. However, this solution is similar to Yuanyong630's solution, but the specific text processing mechanism for a specific text processor is not applicable to all platform environments.
As for other encryption methods, they also have their own shortcomings, and it is difficult to meet the requirements of software engineering. .
BAT encryption tool.rar