The advantages of digital signatures are obvious: efficient processes without media discontinuity, quicker conclusion and higher conversion of contracts. This guide explaines what a digital signature is, what types exist and how they work and can be used.
The term digital signature originates from computer science and cryptography. A digital signature describes a mathematical procedure, so-called public-private key infrastructure. In this procedure, the person signing uses a private signature key to generate and calculate a value on a digital document. With the help of a public and freely available verification key (public key), the authenticity and integrity of the signing person can be verified on the digital document. In order to assign the digital signature with the signature key used to this person, the public verification key must be assigned to this person.