It is the most important to ensure the authenticity and integrity of electronic documents. In this article, we will use digital signature that is cryptographic mechanisms used to verify the authenticity and integrity of XLSX documents. You will be provided vital steps to sign XLSX with digital signature using Java by utilizing the most popular signature library. Let’s begin with the step-by-step instructions and swiftly grasp digital signature integration in XLSX using Java, supported by a code example.

Steps to Sign XLSX with Digital Signature using Java

1. Install GroupDocs.Signature for Java into your project by utilizing the Maven repository to add digital signature into Excel document
2. Include the necessary class references for signing XLSX document with digital signature
3. Create object of Signature class by passing XLSX file path to its constructor
4. Create object of DigitalSignOptions class by providing path of certificate file to its constructor
5. Set the properties of DigitalSignOptions for signature’s appearance
6. Call the Signature.Sign method to save the XLSX to disk with DigitalSignOptions as argument

Digital signatures provide a robust method to achieve the signing XLSX document. The above steps can be used on any operating system such as Windows, macOS, and Linux to insert digital signature into XLSX in Java. To digitally sign documents, there is no need of extra software installations. You only need to install Java and the library dicussed in this topic. To get a clearer idea of how to put this process into action, take a look at the provided code example below.

Code to Sign XLSX with Digital Signature using Java

Digital signatures are a cornerstone of modern data security, and mastering their implementation can have a significant positive impact on your document management processes. In the previous section, we explained in detail about Java digital signature for XLSX with simple code example. Once you have set up the suggested signature library and changed the input and output files’ paths, using the above Java code example into your application for the signing of XLSX with digital signature becomes very simple and uncomplicated endeavor.

Previously, we published a detailed article on the process of signing XLSX files using Barcode signatures. If you require additional help guidance, we suggest referring to our thorough tutorial on how to sign XLSX with Barcode signature using Java.