Q:
Using Adobe Acrobat 8, we can set separate passwords: one for File
Open and
another for three modes for Document editing/printing. Is this
facility available in PDFTron PDFNet SDK ?
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A:
Standard PDF security handler supports two passwords:
master/owner/permission password, and user/open password.
You can set these passwords using ChangeMasterPassword() and
ChangeUserPassword() in StdSecurityHandler.
For example:
// C# sample code
// Apply a new security handler with given security settings.
// In order to open saved PDF you will need a user password 'test'.
StdSecurityHandler new_handler = new StdSecurityHandler();
// Set a new password required to open a document
string user_pass = "pass1";
string owner_pass = "pass2";
new_handler.ChangeUserPassword(new
System.Text.UTF8Encoding().GetBytes(user_pass));
new_handler.ChangeMasterPassword (new
System.Text.UTF8Encoding().GetBytes(owner_pass));
// Set Permissions
new_handler.SetPermission (SecurityHandler.Permission.e_print, true);
new_handler.SetPermission
(SecurityHandler.Permission.e_extract_content, false);
..
doc.SetSecurityHandler(new_handler);