FORMING THE KEY DEPENDING ON THE PARAMETER Russian patent published in 2018 - IPC G06F21/33 H04L9/08 H04L9/32 

FIELD: information technology.

SUBSTANCE: invention relates to the field of user authentication. Authentication method for providing access to one or more computing resources of the provider of computing resources comprises the steps, on which the message and the signature of the message from the authentication side are received, form, in part, based on the received message, the expected signature, at least by calling the hash function of the message authentication code, that one call to the hash function of the message authentication code includes inputting a message authentication code into the hash function, which is based at least in part on a secret certificate shared with the authentication party, the secret certificate is received from the master key source and corresponds to the key zone, one other call to the hash function of the message authentication code includes the result of the previous call of the hash function of the message authentication code as input to the hash function of the message authentication code, determine whether the received signature corresponds to the expected signature, and perform one or more actions for which authentication of the received message is required.

EFFECT: increase the effectiveness of authentication.

29 cl, 24 dwg