[A] type of an electronic signature consisting of a transformation of a record using an asymmetric cryptosystem and a hash function such that a person having the initial record and the signer´s public key can accurately determine: (a) whether the transformation was created using the private key that corresponds to the signer´s public key; and (b) whether the initial record has been altered since the transformation was made.
Among other things, this section enumerates the rights and duties of parties who issue and rely upon a digital signature, and apportions responsibility among the signer, the relying party and the certification authority in the event of damage to an innocent party.