EP2204940A3

Method and apparatus for security in a data processing system

Abstract

Method and apparatus for secure transmissions. Each user is provided a registration key. A long-time updated broadcast key is encrypted using the registration key and provided periodically to a user. A short-time updatedkey is encrypted using the broadcast key. The short-time key is available with each broadcast message,wherein sufficient information to calculate the short-time key is provided in an Internet protocol headerpreceding the broadcast content. Broadcasts are then encrypted using the short-time key, wherein the user decrypts the broadcast message using the short-time key.

Term

Term ended

Projected expiry passed 8 October 2022, 4 years ago.

Every citation, both waysCites: the store holds 0 of 1

Citations
Reference	Relation	Cited during
STALLINGS W: "Cryptography and network security , IP SECURITY", CRYPTOGRAPHY AND NETWORK SECURITY: PRINCIPLES AND PRACTICE, XX, XX, 1 January 1999 (1999-01-01), pages 402 - 424, XP002248261	Non-patent	Search report
MENEZES ET AL: "Handbook of Applied Cryptography", 1 January 1997, CRC PRESS SERIES ON DISCRETE MATHEMATICS AND ITS APPLICATIONS,, BOCA RATON, FL, US, ISBN: 978-0-8493-8523-0, XP002675443	Non-patent	Search report
SCHNEIER B ED - SCHNEIER B: "APPLIED CRYPTOGRAPHY, PROTOCOLS, ALGORITHMS, AND SOURCE CODE IN C,", 1 January 1996, JOHN WILEY & SONS, INC, NEW YORK, US, ISBN: 978-0-471-11709-4, pages: 520 - 524, XP002248263	Non-patent	Search report

37 members in 15 offices

This recordMember, by publication datePriority claim5 more offices are in the list below

Priority claims12

Priority claims
Document	Office	Kind	Date
973301	United States of America	–	2001-10-09
97330101	United States of America	A	2001-10-09
97330101	United States of America	A	2001-10-09
0232054	United States of America	W	2002-10-08
0232054	United States of America	W	2002-10-08
02776178	European Patent Office (EPO)	A	2002-10-08
02776178	European Patent Office (EPO)	A	2002-10-08
02776178	–	–	–
973301	–	–	–
EP20020776178	–	–	–
US20010973301	–	–	–
WO2002US32054	–	–	–

Members37

Family members, oldest first
Document	Office	Kind
US2003070092A1	United States of America	A1	2003-04-10
CA2463542A1	Canada	A1	2003-04-17
WO03032573A2	World Intellectual Property Organization (WIPO)	A2	2003-04-17
WO03032573A3	World Intellectual Property Organization (WIPO)	A3	2003-10-30
MXPA04003335A	Mexico	A	2004-07-08
EP1436939A2	European Patent Office (EPO)	A2	2004-07-14
IL161312A0	Israel	A0	2004-09-27
KR20050034607A	Republic of Korea	A	2005-04-14
CN1633778A	China	A	2005-06-29
RU2004114212A	Russian Federation	A	2005-10-27
JP2005537689A	Japan	A	2005-12-08
HK1076553A1	Hong Kong, China	A1	2006-01-20
BR0213214A	Brazil	A	2006-05-23
TWI256223B	Taiwan Province of China	B	2006-06-01
AU2002342014B2	Australia	B2	2008-03-13
US7352868B2	United States of America	B2	2008-04-01
RU2333608C2	Russian Federation	C2	2008-09-10
US2008226073A1	United States of America	A1	2008-09-18
AU2002342014C1	Australia	C1	2008-10-30
CN100481762C	China	C	2009-04-22
CN101515851A	China	A	2009-08-26
KR100967323B1	Republic of Korea	B1	2010-07-05
EP2204939A2	European Patent Office (EPO)	A2	2010-07-07
EP2204940A2	European Patent Office (EPO)	A2	2010-07-07
HK1137269A	Hong Kong, China	A	2010-07-23
HK1137269A1	Hong Kong, China	A1	2010-07-23
JP4732687B2	Japan	B2	2011-07-27
EP2204939A3	European Patent Office (EPO)	A3	2012-06-13
EP2204940A3This record	European Patent Office (EPO)	A3	2012-07-04
CA2463542C	Canada	C	2013-02-12
CN101515851B	China	B	2014-09-10
US8983065B2	United States of America	B2	2015-03-17
EP2204939B1	European Patent Office (EPO)	B1	2020-03-18
EP2204940B1	European Patent Office (EPO)	B1	2020-04-01
EP1436939B1	European Patent Office (EPO)	B1	2020-04-08
ES2791681T3	Spain	T3	2020-11-05
ES2796115T3	Spain	T3	2020-11-25

72 legal events, as 8 offices reported them to INPADOC

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	Event	Code	Office
2023-01-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2022-11-02	Patent expired after termination of 20 yearsExpiredPE20	PE20	GB
2022-10-08	Expiry of rightR071	R071	DE
2022-06-01	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2022-06-01	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2022-01-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2021-11-30	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2021-10-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-10-29	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2021-08-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-08-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-08-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-07-15	Lapsed because of non-payment of the annual feeLapsedMM	MM	BE
2021-06-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-06-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-05-31	Patent ceasedCeasedPL	PL	CH
2021-03-17	No opposition filedOpposition26N	26N	EP
2021-02-26	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-02-12	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
2021-02-12	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
2021-01-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-01-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-01-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-01-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-01-29	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-01-12	No opposition filed against granted patent, or epo opposition proceedings concluded without decisionGrantedR097	R097	DE
2020-11-15	Deletion acc. to par. 5 (withdrawal of the translation of the ep patent)MK05	MK05	AT
2020-10-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-10-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-10-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-10-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-10-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-10-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-09-09	Patent invalid in the netherlands as no translation has been filedMP	MP	NL
2020-08-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2020-04-29	European patents granted designating irelandGrantedFG4D	FG4D	IE
2020-04-23	Dpma publication of mentioned ep patent grantGrantedR096	R096	DE
2020-04-15	European patent takes effect as a national patent in ch/liEP	EP	CH
2020-04-15	Reference to at number (ep patent validated in austria)REF	REF	AT
2020-04-01	Divisional application: reference to earlier applicationAC	AC	EP
2020-04-01	Designated contracting statesAK	AK	EP
2020-04-01	European patent grantedGrantedFG4D	FG4D	GB
2020-02-28	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
2020-02-28	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE PATENT HAS BEEN GRANTEDSTAA	STAA	EP
2020-02-24	Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS	GRAS	EP
2019-11-20	Intention to grant announcedINTG	INTG	EP
2019-11-20	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2019-11-20	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2019-11-20	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2019-10-23	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP	GRAP	EP
2019-10-23	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2019-10-23	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2019-10-23	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2019-10-23	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2019-10-23	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2019-10-23	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: GRANT OF PATENT IS INTENDEDSTAA	STAA	EP
2019-09-19	Amendment of ipc main classPREVIOUS MAIN CLASS: H04L0009080000R079	R079	DE
2017-10-10	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: EXAMINATION IS IN PROGRESSSTAA	STAA	EP
2014-06-04	First examination report despatched17Q	17Q	EP
2012-07-04	Designated contracting statesAK	AK	EP
2012-06-27	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2012-06-27	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2012-06-13	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2012-06-13	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2012-06-01	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
2010-12-08	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2010-12-08	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2010-12-08	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2010-07-07	Request for examination filed17P	17P	EP
2010-07-07	Divisional application: reference to earlier applicationAC	AC	EP
2010-07-07	Designated contracting statesAK	AK	EP
2010-06-04	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

Method and apparatus for security in a data processing system

Abstract

Term

Priority claims12

Members37

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Events

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Titles3

Classification

Designated states1