Methods of validating an electronic signature
In addition, some industries also support specific standards that are based on digital signature technology.
Digital signatures, like handwritten signatures, are unique to each signer.
Digitally signed messages may be anything re-presentable as a bitstring: examples include electronic mail, contracts, or a message sent via some other cryptographic protocol. First, the authenticity of a signature generated from a fixed message and fixed private key can be verified by using the corresponding public key.
Secondly, it should be computationally infeasible to generate a valid signature for a party without knowing that party's private key.
These include tick boxes, e-squiggles, scanned images, and typed names.