Generating a Symmetric Key to Secure a Communication Link
AssigneeBlackBerry Limited
InventorsMichael Kenneth Brown, Herbert Anthony Little, Michael Stephen Brown, Neil Patrick Adams
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Abstract
A symmetric key to be used to secure a communication link between a first device and a second device is generated as follows: a first symmetric key is generated; a second symmetric key is generated; packets communicated between the first device and the second device over communication link are hashed to create a hash result; the first symmetric key, the second symmetric key and the hash result are hashed to generate a third symmetric key to be used to secure the communication link.
Claims12
A method for securing a communication link between a first device and a second device, the method comprising:
- generating a first symmetric key;
- generating a second symmetric key;
- hashing packets communicated between said first device and said second device over said communication link to create a hash result;
- and
- hashing said first symmetric key, said second symmetric key and said hash result to generate a third symmetric key to be used to secure said communication link.
Dependencies are inferred from the claim text.