Encrypt PDF Command Line Options

C:\>encryptpdf.exe
Limitations in the trial version:
1.Popup a message box.
2.The trial version is can only process the first half pages from your original PDF file.
3.Remove Outlines, Metadata, AcroForm information from some special PDF documents.
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Usage: EncryptPDF [options]
Copyright (C) 2000-2006 by VeryPDF Inc
Website: http://www.verypdf.com
Email: support@verypdf.com
Build: Jan 27 2007
-i [PDF file name] : input PDF filename or directory.
-o [PDF file name] : PDF file will be generated.
If you not specify the -o parameter, the default output file will overwrite the input PDF file.
-u                 : user password.
-w                 : owner password.
-p                 : permission print.
-c                 : permission copy.
-m                 : permission modify.
-n                 : enable adding and changing text notes and AcroForm fields.
-e [128 or 40 ]    : set encrypt level.
-k                 : set for all permission bits.
-v                 : view the PDF file after encrypt.
-l [log file name] : specify log file for output message.
-r [License Key ]  : input License Key for this product.
-?                 : help.
-h                 : help.
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Example:
  EncryptPDF -i c:\sample.pdf -o c:\out.pdf -w owner -u user -l c:\out.log
  EncryptPDF -i c:\sample.pdf -w owner -u user -e 40 -p
  EncryptPDF -i c:\sample.pdf -w owner -u user -e 40 -k -828
  EncryptPDF -i c:\pdfdir\ -o d:\ -w owner -p -c -m -l c:\error.log

Q: How to use EncryptPDF Command Line tool?
A: Start the DOS command line window (i.e. run "cmd" command from "Start Menu"->"Run"); then run the EncryptPDF command from the command line window (EncryptPDF.exe software can be found in your EncryptPDF decompression directory).

Q: How to register the EncryptPDF Command Line tool?
A: Please run the following command in your command line window, please replace "ABCDEFGH" with your registration key, once you registered this software, you needn't register it again.
Example:
    EncryptPDF -r "ABCDEFGH"

Q: How to set the permissions to an existing PDF file with Encrypt PDF Command Line product?
A: You can use "-k" parameter in Encrypt PDF Command Line product to set the permissions to your PDF files, for example,

encryptpdf.exe -k -828 -i C:\test.pdf -o C:\out.pdf

-828 = 0xFFFFFFFFFFFFFCC4

Helpful documentations:
Encrypting PDF files
User Access Permissions
Encrypt PDF Command Line
Encrypt PDF SDK Functions