Key Purposes of Digital Signatures:
Data Integrity : Digital signatures ensure that the content of a document remains unchanged from the time it was signed, protecting against unauthorized alterations.
Authentication : They verify the identity of the signer, providing assurance that the document is indeed signed by the intended individual or entity.
Non-Repudiation : Signers cannot deny their involvement in signing a document, enhancing accountability and trust in digital transactions.
Security : By encrypting the signed data, digital signatures prevent unauthorized access and maintain confidentiality.