FIELD: information technology.
SUBSTANCE: symmetric information encryption is applied and automatic distribution of encryption/decryption keys is organised between communicating parties, wherein the generator of random number sequences which form unpredictably varying encryption/decryption keys used is numeric equivalents of measurement results of a random natural process. Said random process is produced in the same way only at locations of the communication devices of the said communicating parties, and can therefore not be accessed without authorisation, which prevents intruders from accessing secret encryption/decryption keys.
EFFECT: highly reliable information protection.
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