The purpose of a digital signature in electronic transactions is to provide authentication, data integrity, and non-repudiation. It assures the recipient that the message or document originates from a verified source, as digital signatures rely on cryptographic methods to validate the sender’s identity. Furthermore, a digital signature ensures that the content has not been altered during transmission, safeguarding against tampering. Non-repudiation means that the sender cannot deny sending the message, enhancing trust in electronic communications. Digital signatures are widely used in online banking, contracts, and securing sensitive data exchanges.