What is the primary goal of using a digital signature?

The primary goal of using a digital signature is to provide proof of data integrity and origin. Digital signatures are cryptographic techniques that ensure that a message or document has not been altered in transit and confirms the identity of the sender. When a sender signs a document with their private key, it creates a unique signature that can be verified by anyone using the corresponding public key. This verification process assures the recipient that the data has not been tampered with and verifies that it indeed comes from the claimed sender. Thus, digital signatures play a crucial role in establishing trust and authenticity in digital communications, which is essential for secure transactions and information exchanges in cyberspaces.