Digital Signing Definition

A digital signature is an electronic, cryptographic method of authenticating a document. It is used to verify the identity of the sender of a message or the signer of a document, and to ensure that the original content of the message or document has not been changed.

Digital signatures are based on Public Key Infrastructure (PKI), which uses a pair of public and private keys to encrypt and decrypt messages. The sender uses their private key to sign a message or document, which can then be verified by anyone using the sender’s public key. PKI also allows for revocation of keys, so that if a private key is compromised, it can be invalidated and replaced with a new one.