Check if a file is encrypted Leave feedback
The encryption protects data and allows only authorized people to open the file. So, only those who have an encryption key (such as a password) can open and view a file.
- Navigate to the GroupDocs.Viewer App.
- Upload your file. If you are prompted to enter a password to open the file, it is encrypted.
WarningIt’s important to be cautious about uploading sensitive files to online services. For critical files, we recommend using a programmatic method.
Use the GetFileInfo() method that returns the file type and flag that indicates if the file is encrypted. The following code snippet shows how to check if a file is encrypted.
using System;
using GroupDocs.Viewer;
using GroupDocs.Viewer.Results;
// ...
using (Viewer viewer = new Viewer("protected.pdf"))
{
// Get file information.
FileInfo fileInfo = viewer.GetFileInfo();
// Display the file type and flag if the file is encrypted.
Console.WriteLine("File type is: " + fileInfo.FileType);
Console.WriteLine("File encrypted: " + fileInfo.Encrypted);
}
Imports System
Imports GroupDocs.Viewer
Imports GroupDocs.Viewer.Results
' ...
Module Program
Sub Main(args As String())
Using viewer As Viewer = New Viewer("protected.pdf")
' Get file information.
Dim fileInfo As FileInfo = viewer.GetFileInfo()
' Display the file type and flag if the file is encrypted.
Console.WriteLine("File type is: " & fileInfo.FileType.ToString())
Console.WriteLine("File encrypted: " & fileInfo.Encrypted.ToString())
End Using
End Sub
End Module
TipDownload a sample application written in C# that uses this code snippet. You can run the application locally using thedotnet runcommand. Ensure you have the .NET SDK installed beforehand.
The following image shows a sample console output:
To learn how to open an encrypted file, please refer to Load password-protected document documentation topic.
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