Patent ID: 7546456
Filing Date: 2009-06-09
Classification: H04L,H04W

Abstract:
1. A method of confirming ownership of an address by a first device to a second device, the method comprising: (a) identifying a number of identifications allowed; (b) identifying a secret value at a first device, wherein the number of identifications allowed is based on a maximum number of times the secret value may be used before the secret value is changed; (c) calculating a first address value based on the identified secret value and the identified number of identifications allowed; (d) generating an address as a concatenation of a second address value and the calculated first address value; (e) sending the generated address from the first device to a second device; (f) receiving a request to confirm ownership of the generated address from the second device at the first device; (g) identifying a number of confirmations previously performed between the first device and the second device; (h) calculating a first value based on the identified secret value and the identified number of confirmations performed; (i) sending a first message from the first device to the second device, the first message including the calculated first value so that the second device can confirm ownership of the generated address by the first device; (j) comparing the identified number of confirmations performed with the identified number of identifications allowed; and (k) based on an outcome of the comparison, identifying a second secret value at the first device and repeating (c)-(i) replacing the identified secret value with the identified second secret value.