Patent attributes
A method for generating a session key on demand in a network among participating network devices, including choosing a private and public key according to a public key encryption scheme, and broadcasting the public key to each other participating network device; choosing a local contribution value from a multiplicative group of size q; encrypting the local contribution value under the received public key to an encrypted contribution value and sending the encrypted contribution value; receiving encrypted contribution values and deriving decrypted contribution values by applying the private key; deriving a blinded session key from the decrypted contribution values and the local contribution value; agreeing on one of the blinded session keys by using an agreement protocol; and deriving the session key from the agreed-on blinded session key by applying one of the decrypted contribution values and the contribution value A corresponding computer program element, computer program product, and computer device.
