FIELD: electricity.
SUBSTANCE: in this method the encrypted concealed information in a binary form is bit-implemented into the samples by replacing the sample bit with the concealed bit of the additional information, samples are used only with a large absolute digital code value, implementing is produced not only in the least significant bits of samples, but in the most significant bits used for the additional information implemention into the sound channels, the number of the sample bits, the interval between the samples used for implemention, and the sequence of the additional information bit implemention into the samples are selected according to the secret pseudo-random key and the psychophysical characteristics of human hearing.
EFFECT: increasing the cryptographic strength of the implemented additional information.
8 dwg, 1 tbl
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