FIELD: technology for protected transmission of data.
SUBSTANCE: in accordance to the method, first device (10) represents a protection module, which contains first encoding key, called the secret key (PAKV), in a pair of asymmetric encoding keys. The second device represents the receiving device (11), which contains at least one second encoding key, called the open key (PAKB) in the aforementioned pair of asymmetric encoding keys. Also, each device contains the symmetric key (13). The first device (10) generates the first random number (A), which is encoded using the aforementioned secret key (PAKV) and then transmitted to second device (11), where it is decoded using the open key (PAKB). The second device (11) generates the second random number (B), which is encoded using the aforementioned open key (PAKB) and then transmitted to first device (10), where it is decoded using the secret key (PAKV). The communication session key (SK), which is used to ensure safe data exchange, is generated on the basis of combination of symmetric key (13) and random numbers (A,B), which are generated and received by each device.
EFFECT: increased safety of data transmission.
2 cl, 4 dwg
