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Bulk PDF Encryption Using Bat - Change in Code Required

tag-icon • tag-icon pdf batch-file password-protection pdftk
Bulk PDF Encryption Using Bat - Change in Code Required

I found a code which applies random passwords to PDF files and saves it in a separate directory. Can somebody help me in modifying the code as per following requirement.

Need a single password for all pdfs in a folder Read pdf files having spaces in their filename. Source https://gist.github.com/glallen01/3098389

@ECHO OFF

setlocal EnableDelayedExpansion
md out
for /f %%G in ('dir /b "*.pdf"') do (
    call:_pwgen passwd
    pdftk %%G output out/%%G user_pw !passwd!
    echo '%%G', '!passwd!' >> out/passwords.csv
)

goto :EOF

:_pwgen passwd
setlocal ENABLEEXTENSIONS
set _RNDLength=8
set _Alphanumeric=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789
set _Str=%_Alphanumeric%987654321
set passwd=%~1
:_LenLoop
if not "%_Str:~18%"=="" set _Str=%_Str:~9%& set /A _Len+=9& GOTO :_LenLoop
set _tmp=%_Str:~9,1%
set /A _Len=_Len+_tmp
set _count=0
set _RndAlphaNum=
:_loop
set /a _count+=1
set _RND=%Random%
set /A _RND=_RND%%%_Len%
set _RndAlphaNum=!_RndAlphaNum!!_Alphanumeric:~%_RND%,1!
if !_count! lss %_RNDLength% goto _loop
set passwd=!_RndAlphaNum!
endlocal&set %~1=%passwd%
GOTO:EOF

答案1

@echo off 

cd/d "%~dp0" & setlocal
set "_pdftk=C:\Program Files (x86)\PDFtk\bin\pdftk.exe"
set "_pwd=your password here" && 2>nul mkdir "%cd%\out\."

for %%G in (*.pdf)do (
     "%_pdftk%" "%%~G" output ".\out\%%~nxG" user_pw "%_pwd%"
     echo/'%%~G', '%%~nxG', '%_pwd%') >".\out\passwords.csv"

endlocal & timeout /t 5 | echo\is done! & goto :EOF

You need more than only remove um call/label

1. Go to your folder, if it is the same as the bat, use cd /d "%~dp0", if not cd /d "D:\Path\To\Folder"

2. If any (or all) of the pdf files have a space in the name, use tokens^=*

3. If the destination folder exists, you can still use mkdir, omitting error/warning if it exists. The 2>nul is a predictive treatment of a potential error with no relevant impact.

4. Replace for /f ...(dir/... to normal/regular for ... (*.pdf)do ...

5. Why not set and use the full path to pdftk.exe:

set "_pdftk=C:\Program Files (x86)\PDFtk\bin\pdftk.exe"

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