The methods of forming of pseudocasual sequences are probed for the construction of mechanisms of increase of safety of the informative systems and technologies. The generator of pseudocasual sequences is examined with application of transformations to the group of points of elliptic curves (in accordance with the standard of NIST SP 800-90), his failings are rotined in relation to periodic properties of mouldable sequences. The improved method which due to additional introduction of recurrent transformation allows to form the sequences of pseudocasual numbers of maximal period is probed. It is suggested to realize the improved method in the simplified variant for the speed-up forming of pseudocasual sequences.
safety, informative system, generator, pseudocasual sequence