Encrypt

The Documentize PDF Security for .NET is a powerful tool designed to enhance the security of your PDF documents by providing encryption, decryption and signing capabilities. It ensures that your sensitive information remains confidential and protected from unauthorized access.

How to Encrypt a PDF

To encrypt a PDF document, follow these steps:

1. Create an instance of EncryptOptions with the desired user and owner passwords.
2. Add the input PDF file using the AddInput method.
3. Add the output PDF file using AddOutput method.
4. Execute the encryption using the Encrypt method of PdfSecurity class.

1// Create EncryptOptions object to set instructions
2var options = new EncryptOptions("123456", "qwerty");
3// Add input file path
4options.AddInput(new FileData("path_to_your_pdf_file.pdf"));
5// Set output file path
6options.AddOutput(new FileData("path_to_result_pdf_file.pdf"));
7// Perform the process
8PdfSecurity.Encrypt(options);

Key Features:

• Encrypt PDF Documents: Secure your PDF files by adding user and owner passwords.

• Automation: Integrate encryption and decryption into your .NET applications for automated workflows.
• Compliance: Ensure your documents meet industry standards for document security.

Decrypt

The Documentize PDF Security for .NET is a powerful tool designed to enhance the security of your PDF documents by providing encryption, decryption and signing capabilities. It ensures that your sensitive information remains confidential and protected from unauthorized access.

How to Decrypt a PDF

To decrypt a PDF document, follow these steps:

1. Create an instance of DecryptionOptions with the necessary password.
2. Add the input PDF file using the AddInput method.
3. Add the output PDF file using AddOutput method.
4. Execute the encryption using the Decrypt method of PdfSecurity class.

1// Create DecryptOptions object to set instructions
2var options = new DecryptOptions("123456");
3// Add input file path
4options.AddInput(new FileData("path_to_your_pdf_file.pdf"));
5// Set output file path
6options.AddOutput(new FileData("path_to_result_pdf_file.pdf"));
7// Perform the process
8PdfSecurity.Decrypt(options);

Key Features:

• Decrypt PDF Documents: Remove encryption from PDFs when needed.
• Automation: Integrate encryption and decryption into your .NET applications for automated workflows.
• Compliance: Ensure your documents meet industry standards for document security.

Sign

The Documentize PDF Security for .NET component allows users to digitally sign PDF documents. It offers a streamlined process for adding signatures, ensuring authenticity, and securing PDF content. The component supports both visible and invisible signatures and provides options to customize the signature’s position, reason, contact information, and more.

How to Sign PDF Documents

To sign a PDF document using a PFX file, follow these steps:

1. Instantiate the SignOptions class with the PFX file path and password.
2. Add the input PDF and the output file to the options.
3. Run the Sign method to apply the signature.

1// Create SignOptions object to set instructions
2var options = new SignOptions("path_to_your_pfx_file.pfx", "password_of_your_pfx_file");
3// Add input file path
4options.AddInput(new FileData("path_to_your_pdf_file.pdf"));
5// Set output file path
6options.AddOutput(new FileData("path_to_result_pdf_file.pdf"));
7// Perform the process
8PdfSecurity.Sign(options);

How to Use Stream for PFX File

You can also sign a PDF using a PFX certificate provided as a stream instead of a file path. This allows more flexible handling of certificate storage.

1using var pfxStream = File.OpenRead(@"path_to_your_pfx_file.pfx");
2var options = new SignOptions(pfxStream, "password_of_your_pfx_file");
3options.AddInput(new FileData("path_to_your_pdf_file.pdf"));
4options.AddOutput(new FileData("path_to_result_pdf_file.pdf"));
5// Perform the process
6PdfSecurity.Sign(options);

How to Apply Invisible Signatures

To add an invisible signature (one that secures the document without displaying the signature on the document), simply set the Visible property to false.

1. Create an instance of SignOptions.
2. Set Visible to false.
3. Add input and output files.
4. Call Sign to apply the invisible signature.

1var options = new SignOptions("path_to_your_pfx_file.pfx", "password_of_your_pfx_file");
2options.AddInput(new FileData("path_to_your_pdf_file.pdf"));
3options.AddOutput(new FileData("path_to_result_pdf_file.pdf"));
4// Configure invisible signature
5signOptions.Visible = false;
6// Perform the process
7PdfSecurity.Sign(options);

How to use extra Options for signature of PDF Documents

You can use extra options during adding signature to a PFX file like Reason, Contact, Location, PageNumber.

1. Instantiate the SignOptions class with the PFX file path and password.
2. Add the input PDF and the output file to the options.
3. Set values for your options.
4. Run the Sign method to apply the signature.

 1// Create SignOptions object to set instructions
 2var options = new SignOptions("path_to_your_pfx_file.pfx", "password_of_your_pfx_file");
 3// Add input file path
 4options.AddInput(new FileData("path_to_your_pdf_file.pdf"));
 5// Set output file path
 6options.AddOutput(new FileData("path_to_result_pdf_file.pdf"));
 7// Optional parameters
 8options.Reason = "my Reason";
 9options.Contact = "my Contact";
10options.Location = "my Location";
11options.PageNumber = 3;
12// Perform the process
13PdfSecurity.Sign(options);

How to Add a Timestamp to PDF

To add a secure timestamp to a PDF document, follow these steps:

1. Create an instance of AddTimestampOptions to configure the timestamping process.
2. Add the input PDF file using the AddInput method.
3. Set the output file path using AddOutput.
4. Execute the timestamping using the Sign method.

1// Create SignOptions object to set instructions
2var options = new SignOptions("path_to_your_pfx_file.pfx", "password_for_your_pfx_file");
3options.TimestampOptions = new TimestampOptions("server_url");
4// Add input file path
5options.AddInput(new FileData("path_to_your_pdf_file.pdf"));
6// Set output file path
7options.AddOutput(new FileData("path_to_result_pdf_file.pdf"));
8// Perform the process
9PdfSecurity.Sign(options);

How to Use Custom Authentication with Timestamp Server

You can provide basic authentication credentials when connecting to the timestamp server. This allows you to authenticate with servers that require a username and password.

1// Configure the timestamping options with authentication
2options.TimestampOptions = new TimestampOptions("timestamp_server_url", "username:password");

Key Features:

• Digitally Sign PDF Documents: Secure your documents with visible or invisible digital signatures.
• PFX Support: Sign PDF files using a PFX certificate.
• Customizable Options: Configure signature settings like reason, location, and contact details.
• Visible and Invisible Signatures: Choose whether the signature is visible on the document.
• Customizable Timestamp Servers: Use custom timestamp server URLs and authentication credentials.

Sanitize

The Documentize PDF Security for .NET component allows users to sanitize PDF documents. It offers a streamlined process for remove sensitive or unnecessary information such as metadata, attachments, annotations, JavaScripts, forms, layers, search index, or private content. The component provides options to customize information that will be deleted.

Clearing information

• Metadata
• Attachments
• Annotations
• Java Scripts
• Forms
• Layers
• Search index

How to Sanitize PDF documents

To Sanitize a PDF file, follow these steps:

1. Instantiate the SanitizeOptions class with the input file path and the output file path.
2. Run the Sanitize method to apply the sanitization.

1// Create SanitizeOptions object to set input and output files
2var options = new SanitizeOptions("path_to_your_pdf_file.pdf", "path_to_result_pdf_file.pdf");
3// Perform the process
4PdfSecurity.Sanitize(options);

How to Use Stream for Input and Output data

You can also perform cleaning using PDF documents provided as a stream instead of specifying a file path.

1// Prepare input and output streams
2using var inputStream = File.OpenRead("path_to_your_pdf_file.pdf");
3using var outputStream = new MemoryStream();
4// Create SanitizeOptions object to set input and output streams
5var options = new SanitizeOptions(inputStream, outputStream);
6// Perform the process
7PdfSecurity.Sanitize(options);

How to Sanitize from file to stream

You can set different types of input and output data.

1// Prepare output stream
2using var outputStream = new MemoryStream();
3// Create SanitizeOptions object to set input file and output stream
4var options = new SanitizeOptions("path_to_your_pdf_file.pdf", outputStream);
5// Perform the process
6PdfSecurity.Sanitize(options);

How to Sanitize from file to stream by properties

You can set different types of input and output data by using properties.

 1// Prepare output stream
 2using var outputStream = new MemoryStream();
 3// Create SanitizeOptions object
 4var options = new SanitizeOptions();
 5//Set Input file
 6options.Input = new FileData("path_to_your_pdf_file.pdf");
 7//Set Output stream
 8options.Output = new StreamData(outputStream);
 9// Perform the process
10PdfSecurity.Sanitize(options);

How to Sanitize without removing Metadata

Simply set the RemoveMetadata property to false.

1// Create SanitizeOptions object to set input and output files
2var options = new SanitizeOptions("path_to_your_pdf_file.pdf", "path_to_result_pdf_file.pdf");
3options.RemoveMetadata = false;
4// Perform the process
5PdfSecurity.Sanitize(options);

How to Sanitize without removing Attachments

Simply set the RemoveAttachments property to false.

1// Create SanitizeOptions object to set input and output files
2var options = new SanitizeOptions("path_to_your_pdf_file.pdf", "path_to_result_pdf_file.pdf");
3options.RemoveAttachments = false;
4// Perform the process
5PdfSecurity.Sanitize(options);

How to Sanitize with converting all pages to images and set result dpi

The example demonstrates how to Sanitize PDF with converting all pages to images and set result dpi. Set the ConvertPagesToImages property to true. Change ImageDpi if you need,

1// Create SanitizeOptions object to set input and output files
2var options = new SanitizeOptions("path_to_your_pdf_file.pdf", "path_to_result_pdf_file.pdf");
3// Turn on conversion and set dpi
4options.ConvertPagesToImages = true;
5options.ImageDpi = 200;
6// Perform the process
7PdfSecurity.Sanitize(options);

How to Sanitize without removing JavaScripts and Actions

Simply set the RemoveJavaScriptsAndActions property to false.

1// Create SanitizeOptions object to set input and output files
2var options = new SanitizeOptions("path_to_your_pdf_file.pdf", "path_to_result_pdf_file.pdf");
3options.RemoveJavaScriptsAndActions = false;
4// Perform the process
5PdfSecurity.Sanitize(options);

How to Sanitize PDF file in the shortest possible style

1PdfSecurity.Sanitize(new SanitizeOptions("path_to_your_pdf_file.pdf", "path_to_result_pdf_file.pdf"));

Key Features:

• Sanitize PDF Documents: Cleaning a document of potentially dangerous data.
• Customizable options: Choose what to delete and what to leave.
• Convert to images: Convert pages to images, but stay as PDF.