This article provides guidance on how to digitally sign a Word document using Java. It has the details to set the IDE for the application development, a list of steps to define the algorithm, and a runnable sample code demonstrating how to insert a signature on a Word document using Java. We will explore various options to customize the digital signature while signing the Word document.

Steps to Insert Signature in Word using Java

1. Set the IDE to use Aspose.Words for Java for signing a document
2. Instantiate a SignOptions class object to customize the digital signature
3. Set different properties, for instance, comments and time
4. Create a CertificateHolder class object to load the PFX certificate file
5. Sign and save the target Word document using the Sign() method in the DigitalSignatureUtil class

These steps describe how to sign on Word document using Java. The process starts by declaring an object of the SignOptions class that supports the customization of the digital signature. We will use the CertificateHolder class to load the certificate file along with the password used by the DigitalSignatureUtil.sign() method for saving the output Word file.

Code to Sign Word Document using Java

The above code segment demonstrates a simple application to insert a signature on Word using Java. First, we have used the SignOptions class supporting the setting of the comments, sign time, provider ID, signature line image, and decryption password. In the next step, we use the CertificateHolder class to load the certificate and sign the document however, you may use it to create the certificate from the byte array, file name, password, and alias in different combinations.

This short tutorial has guided us on how to insert a signature on Word using Java. If you want to add a password to a Word file, refer to the article on how to add password to Word document using Java.