Patent ID: 9240982
Filing Date: 2016-01-19
CPC Classification: H04L,H04W

Claim Text:
1. A method for associating devices, the method comprising: receiving, at a first device, user-identification information; determining whether the user-identification information is associated with a common key; in response to determining that the user-identification information is not associated with the common key, generating an optically-readable code that encodes a first set of data, wherein the first set of data includes at least first key-derivation data, a network address of the first device, and session-identification information; displaying the optically-readable code of the first set of data; establishing a connection with a second device; receiving a second set of data from the second device via the established connection, wherein the second set of data includes at least second key-derivation data, and wherein the second key-derivation data is generated in response to receiving the first key-derivation data at the second device; determining the common key from the first key-derivation data and the second key-derivation data; encrypting, at the first device, secure-connection establishing data using the common key; sending the secure-connection establishing data from the first device to the second device via the established connection; decrypting, at the second device, the secure-connection establishing data using the common key; and establishing a secure connection using the decrypted secure-connection establishing data.