A digital signature is a mathematical scheme for demonstrating the authenticity of a digital message or documents.
A digital signature is a mathematical scheme for demonstrating the authenticity of a digital message or documents. A valid digital signature gives a recipient reason to believe that the message was created by a known sender, that the sender cannot deny having sent the message (authentication and non-repudiation), and that the message was not altered in transit (integrity).
Digital signatures are a standard element of most cryptographic protocol suites, and are commonly used for software distribution, financial transactions, and in other cases where it is important to detect forgery or tampering.
