Digital signature standard (DSS)

This Standard specifies a suite of algorithms that can be used to generate a digital signature.Digital signatures are used to detect unauthorized modifications to data and to authenticate the identity of the signatory.In addition, the recipient of signed data can use a digital signature as evidence in demonstrating to a third party that the signature was, in fact, generated by the claimed signatory.This is known as non-repudiation, since the signatory cannot easily repudiate the signature at a later time.