EP0994600A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method and apparatus for a secure multicast transmission
Assignee: AT&T Inc
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Filing: 1999-08-23
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Granted: —
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Expires: 2019-08-23
Abstract
Abstract A method and apparatus for a secure multicast transmission is provided. A secure multicast transmission reservation, received at a multicast session security platform, is sent from a sender of a secure multicast transmission and may include, for example, information about the secure multicast transmission and information about which multicast receivers are authorized to receive the secure multicast transmission. The multicast session security platform also receives a request for security information from a requesting multicast receiver. The multicast session security platform may include, for example, a multicast session security server capable of communicating with a plurality of senders and a plurality of requesting receivers. It is determined, using information from the reservation, if the requesting receiver is authorized to receive the secure multicast transmission. If so, multicast transmission security information, such as IPSEC SA information needed to receive the secure multicast transmission, is sent to the requesting receiver.
Inventors
- 👤 Vijay K. Bhagavath
- 👤 Joseph Thomas O'neil
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 13:17
CPC Classifications
H; H04; H04L; H04L63/00; H04L63/04; H04L63/0428; H04L12/00; H04L12/02; H04L12/16; H04L12/18; H04L12/1886; H04L63/06; H04L63/065; H04L2463/00; H04L2463/102
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
119 words
A method of supplying multicast transmission security information to a plurality of
requesting multicast receivers, the multicast transmission security information being configured
to enable receipt of a secure multicast transmission, comprising the steps of: establishing an individual secure unicast channel for each of the plurality of requesting
multicast receivers, the secure unicast channels being established using security information
different from the multicast transmission security information; receiving, through the secure unicast channel, authorization information from each of the
plurality of requesting multicast receivers; determining if each of plurality of requesting multicast receivers is authorized to receive
the secure multicast transmission; and sending, through the secure unicast channel, the multicast transmission security
information to each of the authorized requesting multicast receivers.
Claim 2
Dependent Claim
24 words
The method of claim 1, wherein the multicast transmission security information
comprises Internet Protocol Security (IPSEC) information needed to receive the secure multicast
transmission.
Claim 3
Independent Claim
79 words
A method for providing multicast transmission security information, comprising the
steps of: receiving, at a multicast session security platform, a secure multicast transmission
reservation from a sender of a secure multicast transmission, the secure multicast transmission
reservation comprising information about the secure multicast transmission; receiving, at the multicast session security platform, a request for the multicast
transmission security information from a requesting multicast receiver; and determining if the requesting multicast receiver is authorized to receive the secure
multicast transmission.
Claim 4
Dependent Claim
31 words
The method of claim 3, further comprising: sending the multicast transmission security information to the requesting multicast
receiver if the requesting multicast receiver is authorized to receive the secure multicast
transmission.
Claim 5
Dependent Claim
42 words
The method of claim 3, wherein the secure multicast transmission reservation further
comprises information about which multicast receivers are authorized to receive the secure
multicast transmission, and wherein said step of determining is performed using information
from the secure multicast transmission reservation.
Claim 6
Dependent Claim
18 words
The method of claim 3, wherein the secure multicast transmission reservation further
comprises the multicast transmission security information.
Claim 7
Dependent Claim
48 words
The method of claim 4, wherein said step of receiving comprises receiving a plurality
of requests for the multicast transmission security information from a plurality of requesting
multicast receivers, and wherein said steps of determining and sending are performed for each of
the plurality of requesting multicast receivers.
Claim 8
Dependent Claim
24 words
The method of claim 3, wherein the multicast transmission security information
comprises Internet Protocol Security (IPSEC) information needed to receive the secure multicast
transmission.
Claim 9
Dependent Claim
21 words
The method of claim 8, wherein the IPSEC information comprises Security
Association (SA) information needed to receive the secure multicast transmission.
Claim 10
Dependent Claim
27 words
The method of claim 3, wherein said step of receiving comprises receiving the
request for multicast transmission security information as a unicast Internet Protocol Security
(IPSEC) transmission.
Claim 11
Dependent Claim
18 words
The method of claim 3, further comprising the step of: receiving billing information from the requesting multicast receiver.
Claim 12
Dependent Claim
22 words
The method of claim 7, wherein said step of determining is performed using the
billing information received from the requesting multicast receiver.
Claim 13
Dependent Claim
21 words
The method of claim 3, further comprising the step of: sending billing information to the sender of the secure multicast transmission.
Claim 14
Dependent Claim
19 words
The method of claim 3, wherein the secure multicast transmission reservation is
received using a communication network information page.
Claim 15
Dependent Claim
21 words
The method of claim 3, wherein the request for multicast transmission security
information is received using a communication network information page.
Claim 16
Independent Claim
125 words
A method for providing Internet Protocol Security (IPSEC) Security Association
(SA) information related to a secure multicast transmission, comprising the steps of: receiving, at a multicast session security platform, a secure multicast transmission
reservation from a sender of the secure multicast transmission, wherein the secure multicast
transmission reservation includes the IPSEC SA information and information about authorized
multicast receivers; receiving, at the multicast session security platform, a plurality of requests for the IPSEC
SA information from a plurality of requesting multicast receivers; determining if each of the plurality of requesting multicast receivers is authorized to
receive the IPSEC SA information based on information about authorized multicast receivers
contained in the secure multicast transmission reservation; and sending the IPSEC SA information to authorized requesting multicast receivers.
Claim 17
Dependent Claim
113 words
A multicast session security platform, comprising: a first communication port configured to receive a secure multicast transmission
reservation, including multicast transmission security information and information about
authorized multicast receivers, from a sender of a secure multicast transmission; a second communication port configured to receive a plurality of requests for the
multicast transmission security information from a plurality of requesting multicast receivers;
and a server system coupled to said first and second communication ports, said server system
being configured to determine if each of the plurality of requesting multicast receivers is
authorized to receive the multicast transmission security information based on the information
about authorized multicast receivers contained in the secure multicast transmission reservation.
Claim 18
Dependent Claim
105 words
An article of manufacture comprising a computer-readable medium having stored
therein instructions adapted to be executed by a processor, the instructions which, when
executed, define a series of steps for providing multicast transmission security information, said
steps comprising: receiving, at a multicast session security platform, a secure multicast transmission
reservation from a sender of a secure multicast transmission, the secure multicast transmission
reservation comprising information about the secure multicast transmission; receiving, at the multicast session security platform, a request for the multicast
transmission security information from a requesting multicast receiver; and determining if the requesting multicast receiver is authorized to receive the secure
multicast transmission.
Claim 19
Dependent Claim
34 words
The medium of claim 18, wherein the steps further comprise: sending the multicast transmission security information to the requesting multicast
receiver if the requesting multicast receiver is authorized to receive the secure multicast
transmission.
Claim 20
Dependent Claim
42 words
The medium of claim 18, wherein the secure multicast transmission reservation
further comprises information about which multicast receivers are authorized to receive the
secure multicast transmission, and wherein the step of determining is performed using
information from the secure multicast transmission reservation.
Claim 21
Dependent Claim
107 words
An article of manufacture comprising a computer-readable medium having stored
therein instructions adapted to be executed by a processor, the instructions which, when
executed, define a series of steps for receiving multicast transmission security information, said
steps comprising: sending a request for the multicast transmission security information to a multicast
session security platform, the request including at least one of (a) user identification information,
(b) billing information and (c) multicast transmission identification information; receiving the multicast transmission security information from the multicast session
security platform; and receiving, using the multicast transmission security information, a secure multicast
transmission from a sender other than the multicast session security platform.
References Cited (Backward Citations)
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