METHOD AND DEVICE FOR PROVIDING NOISE IMMUNITY OF DATA PROCESSING BASED ON CRYPTOCODE STRUCTURES IN THE COMPLEX PLANE Russian patent published in 2023 - IPC G06F11/08 G06F21/60 

FIELD: radio and telecommunication.

SUBSTANCE: invention relates to a method and device for providing noise-resistant data processing based on cryptocode structures in the complex plane. In the claimed solution, the information to be transmitted, presented in the form of a stream of characters, enters the cryptocode information converter, in which it is pre-processed and a block encryption procedure with nonlinear bijective transformations is performed using iterative encryption keys. Based on the received encrypted sequence of ciphertext blocks, the formation of the 1st and 2nd redundant data blocks is carried out. Next, the 1st and 2nd redundant data blocks are combined into a single check data block. The generated check data block together with the information sequence of ciphertext blocks enter the communication channel. On the receiving side, a cryptocode information converter from the received sequence generates an information sequence of ciphertext blocks and a check data block. Next, the received check data block is converted and the 1st and 2nd redundant data blocks are formed. Also, on the receiving side, the 1st and 2nd redundant data blocks are formed from the received sequence of ciphertext blocks. Further, from the received redundant data blocks and those generated on the receiving side, error syndromes are formed, which enter the block for detecting and correcting distortions. In this block, according to pre-computed error tables and the resulting syndromes, detection, localization and, if necessary, restoration of distorted ciphertext blocks are carried out. In case of exceeding the correcting abilities of cryptocode structures, a request is generated to retransmit the distorted ciphertext blocks localized by the error syndrome. The corrected (restored) information sequence of ciphertext blocks is subjected to block decryption with non-linear bijective transformations using iterative encryption keys, after which the stream of received information symbols is formed.

EFFECT: improving the noise immunity of processing encrypted information.

2 cl, 7 dwg