Question

How is the numeric string that makes up a digital signature created?

Answer 1

A numeric string is created by a cryptographic algorithm, which is called a hash that is used to validity of a message or authenticity of a document. The signature is verified by an algorithm that uses the stated owner of the signature's public key to accept or reject the authenticity of a signature. A certification authority's digital signature is used to verify the authenticity of digital certificates and other documents in a PKI.