CFR 21 Part 11
(5) Digital signature means an electronic signature based upon cryptographic methods of originator authentication,
computed by using a set of rules and a set of parameters such that the identity of the signer and the integrity of the data
can be verified.
(7) Electronic signature means a computer data compilation of any symbol or series of symbols executed, adopted, or
authorized by an individual to be the legally binding equivalent of the individual's handwritten signature.