Digital signatures are used to authenticate and verify the identity of the sender and the integrity of the message being sent. They are used to ensure that the message has not been tampered with during transit.
For example, when an employee signs a document electronically, the employer can use a digital signature to verify that the employee is the one who sent the document. This helps to protect against fraud and unauthorized access. Similarly, when a customer purchases a product online, a digital signature can be used to verify that the customer is the one making the purchase and that the payment details are correct.