Spire PDF - .Security.Encrypt

[luca.demori]

Hi !

I just upgraded my .NET project with the latest version of Spire.PDF.

I always used the "document.Security.Encrypt(...)" but, now, I have the message that this method is obsolete.

I can't understand which is the new one ... can someone help me ?

Thanks !

[Amin.Gan]

Hello,

Thanks for your inquiry.
In order to optimize this functionality, we have made an improvement, and the latest version currently uses the following code.

Encrypt document:

Code: Select all

 PdfDocument doc = new PdfDocument();
  doc.LoadFromFile(@"in.pdf");
  //Create password security policy
  PdfSecurityPolicy securityPolicy = new PdfPasswordSecurityPolicy(userPassword, ownerPassword); 
  //Set encryption algorithm
  securityPolicy.EncryptionAlgorithm = PdfEncryptionAlgorithm.AES_128; 
  //Set document permissions (ownership), do not set default to ForbidAll
  securityPolicy.DocumentPrivilege = PdfDocumentPrivilege.AllowAll; 
  //Set printing permissions
  securityPolicy.DocumentPrivilege.AllowPrint = false;
  doc.Encrypt(securityPolicy);
  doc.SaveToFile(@"out.pdf");

Decrypt document:

Code: Select all

   PdfDocument doc = new PdfDocument();
   doc.LoadFromFile(@"in.pdf", ownerPassword);
   doc.Decrypt();
   doc.SaveToFile(@"out.pdf");

The method you used will be removed in the future, now we recommend using the new interface to implement document encryption and decryption(from 9.7.14). If there is any other issues, please feel free to provide feedback.

Sincerely,
Amin
E-iceblue support team

[luca.demori]

Thanks Amin, it works great !

Thanks for your support !

[Amin.Gan]

Hello,

Thanks for your reply.
I'm glad to hear this news. If you have any other questions, please feel free to write to me.

Sincerely,
Amin
E-iceblue support team