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METHOD OF ENCRYPTION/DECRYPTION OF DATA ON THE BASIS OF THE PIXEL ALPHABET OF MONOCHROME IMAGE

Improving the availability of information technology and increasing the volume of digital traffic leads to an important problem of data protection. A particularly pressing issue is the problem of transmitting confidential data through unsecured communication channels, such as the Internet. Recently, there has been a significant increase in the number of cyberattacks, including attempts to intercept and steal confidential information transmitted through global information networks. Information security in computer information and telecommunication systems is a priority. To date, one of the most reliable methods of protecting information is rightly considered to be encryption. Cryptographic data transformations are the most effective way for a system to maintain the confidentiality of information as it is entered, output, transmitted, processed, and stored, and to resist its destruction, theft, or distortion. But the most effective way to ensure the confidentiality of information is the combined use of steganographic and cryptographic means. In order to ensure high stability of encrypted information when transmitting it through the network of information and telecommunications systems and reduce the threat of unauthorized access to it or attack on the cipher, it is proposed to change the approach to solving the problem of data encryption. A method of encrypting / decrypting digital text information based on the pixel alphabet of a monochrome image, which is based on hiding or distorting graphic data, is proposed. This approach allows you to ensure high stability of encrypted information and significantly reduce the risk of unauthorized access to confidential information or attack on the cipher by encrypting each character with a dynamic random number from the range of values of the corresponding character and hiding the encrypted text in the position of graphic data. sender and recipient only.