The "model of successive geometric transformations" paradigm has been adapted for the implementation of parallel-streaming neural network encryption-decryption of data in real time. A model and structure of a parallel-streaming neural-like element for the mode have been developed. Keywords-intensive data stream; neural networks; geometric transformations model I. INTRODUCTION The latest information technologies are becoming global in the modern world. Their development and development of communications provides ever-widening opportunities for access to information resources and the transfer of large amounts of data for unlimited distances. In the context of the intensive development of the market for information products and services, information has become a full-fledged product that has its own consumer properties and cost characteristics. The widespread introduction of information technology makes a relevant problem for the protection of the transmission of information using cryptographic methods that provide encryption of the ready-to-transmit information. The encrypted information is transmitted by a communication channel to an authorized user, who, after receiving it, performs decryption using a reverse transformation. Cryptographic transformations are carried out using special algorithms. In order to encrypt and decrypt real-time data streams, it is suggested to use neural-like network algorithms, the key in which is the network architecture, weighting factors, and masking codes.