Patent ID: 9369290
Filing Date: 2016-06-14
CPC Classification: H04L,H04W

Claim Text:
1. A method for a second device to be authenticated by a first device, the method performed by the second device and comprising: the second device receiving from the first device a challenge value and a hiding value; the second device computing a masked response value using the challenge value, the hiding value, and secret information known to the second device; the second device sending to the first device the masked response value for comparison to an expected masked response value, wherein the secret information is not known to the first device, the expected masked response value is computed by the first device using the hiding value and an expected response value known by the first device and corresponding to the challenge value, the challenge value and the expected response value are loaded into memory of the first device at the time of manufacture of the first device; and repeating the receiving, computing, and sending, when authentication of the second device is performed again, using a different hiding value received from the first device and the same challenge value received from the first device.