Method for conveying encryption information to parties in a multicast group
First Claim
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1. A method for conveying encryption information to parties in a multicast group in a mobile radio network, the method comprising the steps of:
- allocating a connection, which is already protected against interception by unauthorized persons, as dedicated to a receiver of the encryption information; and
transmitting a cipher key and at least a part of a current encryption sequence number via an air interface and via the connection which is already protected against interception by unauthorized persons.
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Abstract
A method for conveying encryption information to parties in a multicast group in a mobile radio network is provided which is distinguished by the fact that a cipher key and a current encryption sequence number or parts of such a sequence number are transmitted via an air interface, via a connection already protected against interception by unauthorized persons which is allocated as dedicated to the receiver of the encryption information.
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9 Claims
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1. A method for conveying encryption information to parties in a multicast group in a mobile radio network, the method comprising the steps of:
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allocating a connection, which is already protected against interception by unauthorized persons, as dedicated to a receiver of the encryption information; and
transmitting a cipher key and at least a part of a current encryption sequence number via an air interface and via the connection which is already protected against interception by unauthorized persons. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification