What does a digital signature on a document signify?

A digital signature on a document serves as proof of authentication for digital information. This means that it verifies the identity of the person or entity that signed the document and ensures that the content has not been altered since it was signed. Digital signatures rely on cryptographic technology to provide a high level of security and integrity to electronic communications and transactions.

This is particularly important in legal, financial, and business contexts where the authenticity of a document must be confirmed. By validating the digital signature, recipients can trust that the document originates from the stated signer and that its content has remained unchanged, which is crucial for maintaining the integrity of digital communications.

While some may think of a digital signature as an optional feature or as comparable to a handwritten signature, its primary role in digital transactions is distinctly to serve as an authentication mechanism that protects the integrity of the information presented.