A digital signature is an electronic method of validating the authenticity of a digital document or message. It is a cryptographic technique that enables the identification of the sender of a message or the person who has signed a document, and verifies that the content of the document or message has not been altered during transmission. Digital signatures are often used in electronic transactions to ensure the integrity and authenticity of documents and messages.
Public Key Infrastructure (PKI), Hashing Algorithms, Cryptography, Smart Cards, Biometrics
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