SECURE INFORMATION TRANSMISSION METHOD Russian patent published in 2015 - IPC H04L9/00 H04K3/00 

FIELD: information technologies.

SUBSTANCE: method of secure information transmission based on addition of the secured signal and the signal being a function of the secured signal and the masking signal, differing by that, for the purpose of increase of hiding and accuracy of recovery of the secured signal, the stego-container containing two components is formed, for this purpose the first signal is allocated which is equal to a half of the secured signal, and the second signal equal to a difference of the value of the first key and the first signal, the first component of the container is defined by the first signal, to which the product of masking signal and the sum of value of the second key and the first signal is added, the second component of the container is defined by the second signal, to which the product of masking signal and the sum of value of the third key and the second signal is added, to recover the secured signal four coefficients are determined, the first coefficient is equal to the doubled sum of values of the first and third keys, the second coefficient is equal to the doubled value of the second key, the third coefficient is equal to the doubled product of values of the first and second keys, the fourth coefficient is equal to the sum of values of the second and third keys, the readings of the secured signal are found by adding of the third coefficient to the product of the first container components and the first coefficient, and subtracting the product of the second container components and the second coefficient, the obtained result is divided by the sum of the first and second components of the container and the fourth coefficient.

EFFECT: improvement of security and accuracy of recovery of the secured signal.

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