Abstract:
In this paper we present a software system for
cryptographic information protection based on deterministic
chaos. The program system functionality includes encryption and
decryption of text and graphic information on the basis of a
random number generator, which is played by the Lorentz
attractor. The use of an attractor in this program system
guarantees randomness and absolute randomness when issuing
numbers, limited only by the initial parameters. It is also
necessary to transfer encryption parameters, excluding the
possibility of its interception, because Encryption parameters are
used in the program as decryption keys. After the process of text
encryption, the program performs a frequency analysis of the
input and output files. Accordingly, the frequency of a certain
group of letters, which is vulnerable to frequency analysis, must
be clearly expressed in the input file. In the output file, the
frequency should be stable and uniform, thereby proving the
effectiveness of encryption.
