FIELD: ensuring protection of transmitted information.
SUBSTANCE: method includes generation of local keys Ki between adjacent nodes, i=1, 2, …, N+1, where N is the number of intermediate nodes. According to the invention, the cryptographic protection module of the intermediate node, having local keys Ki and Ki+1 created with adjacent nodes, prepares and sends two messages for end nodes A and B, and in the first message for end node A key Ki+1 is encrypted using key K i, in the second message for end node B key Ki is encrypted using key Ki+1. After receiving messages from all intermediate nodes and decrypting their contents, the end nodes have the same set of local keys {K1, K2, …, KN, KN+1} and further, using function F, form common key K for secure communication between end nodes.
EFFECT: enabling secure transmission of information between end nodes through intermediate communication nodes at a high speed and with no restrictions on the applied cryptographic information protection algorithms.
2 cl, 1 dwg
