Abstract
The rapid development of modern computing technology threatens the confidentiality of information that is provided, usually, by traditional cryptographic means and forces researchers to look for alternative methods of security. Considering the development tendencies one of these alternatives may be quantum cryptography that unlike traditional (which is mostly based on the impossibility of solving a certain class of mathematical problems by certain period of time) uses specific unique properties of quantum particles, based on the inviolability of the quantum physics laws. It is known that some quantum cryptography protocols allowing to achieve information-theoretic stability – a key distribution protocols mostly. Another class of quantum cryptography protocols - secure direct communication protocols, most of which have asymptotic stability. Therefore, it was suggested a number of methods to increase the stability of such protocols. One of these methods will increase the asymptotic stability of quantum secure direct connection protocols with entangled pairs (correlated) of qutrit, but this method requires the generation of ternary (trit) pseudorandom sequences. In the work proposed generating pseudorandom trit sequences method based on the number of irreversible functions and transformation over the field GF (3). Also at the basis of a method developed appropriate algorithm that reflected as pseudo code. Further research will focus on the development of a quality evaluation of trit generated pseudorandom sequences method, as virtually all existing methods focused on binary sequence.