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EP1734493

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EP About this file: EP1734493

EP1734493 - PADDING APPLICATION METHOD TO ENSURE THE SECURITY OF THE NTRU ENCRYPTION [Right-click to bookmark this link]
Former [2006/51]	PADDING APPLICATION METHOD GUARANTEEING SAFETY OF ENCRYPTION METHOD
	[2013/26]
Status	No opposition filed within time limit Status updated on 03.10.2014 Database last updated on 14.09.2024
Most recent event Tooltip	03.10.2014	No opposition filed within time limit	published on 05.11.2014 [2014/45]
Applicant(s)	For all designated states NEC Corporation 7-1, Shiba 5-chome Minato-ku Tokyo 108-8001 / JP
	[2013/48]
Former [2006/51]	For all designated states NEC CORPORATION 7-1, Shiba 5-chome Minato-ku Tokyo 108-8001 / JP
Inventor(s)	01 / TERANISI, Isamu, c/o NEC Corporation 7-1, Shiba 5-chome, Minato-ku Tokyo 108-8001 / JP
	[2013/48]
Former [2006/51]	01 / TERANISI, Isamu, c/o NEC Corporation 7-1, Shiba 5-chome, Minato-ku Tokyo 108-8001 / JP
Representative(s)	Robson, Aidan John, et al Reddie & Grose LLP The White Chapel Building 10 Whitechapel High Street London E1 8QS / GB
	[N/P]
Former [2013/48]	Robson, Aidan John, et al Reddie & Grose LLP 16 Theobalds Road London WC1X 8PL / GB
Former [2012/45]	Robson, Aidan John, et al Reddie & Grose 16-18 Theobalds Road London WC1X 8PL / GB
Former [2011/15]	Robson, Aidan John, et al Reddie & Grose 16 Theobalds Road London WC1X 8PL / GB
Former [2011/07]	Reeve, Nicholas Edward, et al 16 Theobalds Road London WC1X 8PL / GB
Former [2006/51]	Abnett, Richard Charles REDDIE & GROSE 16 Theobalds Road London WC1X 8PL / GB
Application number, filing date	05721337.3	23.03.2005
	[2006/51]
	WO2005JP05287
Priority number, date	JP20040102399	31.03.2004 Original published format: JP 2004102399
	[2006/51]
Filing language	JA
Procedural language	EN
Publication	Type:	A1 Application with search report
	No.:	WO2005098796
	Date:	20.10.2005
	Language:	EN
	[2005/42]
	Type:	A1 Application with search report
	No.:	EP1734493
	Date:	20.12.2006
	Language:	EN
	The application published by WIPO in one of the EPO official languages on 20.10.2005 takes the place of the publication of the European patent application.
	[2006/51]
	Type:	B1 Patent specification
	No.:	EP1734493
	Date:	27.11.2013
	Language:	EN
	[2013/48]
Search report(s)	International search report - published on:	JP	20.10.2005
	(Supplementary) European search report - dispatched on:	EP	09.02.2010
Classification	IPC:	H04L9/30	[2010/10]
	CPC:	H04L9/3093 (EP,US); H04L2209/20 (EP,US)
	Former IPC [2006/51]	G09C1/00
Designated contracting states	FR, GB [2007/27]
Former [2006/51]	AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LI, LT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR
Title	German:	STOPFANWENDUNGSVERFAHREN, DAS DIE SICHERHEIT DES NTRU-VERSCHLÜSSELUNGSVERFAHRENS GARANTIERT	[2013/26]
	English:	PADDING APPLICATION METHOD TO ENSURE THE SECURITY OF THE NTRU ENCRYPTION	[2013/26]
	French:	MÉTHODE D'APPLICATION DE BOURRAGE ASSURANT LA SÉCURITÉ DU CHIFFREMENT NTRU	[2013/26]
	Former [2006/51]	STOPFANWENDUNGSVERFAHREN, DAS DIE SICHERHEIT EINES VERSCHLÜSSELUNGSVERFAHRENS GARANTIERT
	Former [2006/51]	PADDING APPLICATION METHOD GUARANTEEING SAFETY OF ENCRYPTION METHOD
	Former [2006/51]	MÉTHODE D"APPLICATION DE BOURRAGE GARANTISSANT LA SÛRETÉ D"UNE MÉTHODE DE CRYPTAGE
Entry into regional phase	14.12.2005	Translation filed
	19.12.2005	National basic fee paid
	19.12.2005	Search fee paid
	19.12.2005	Designation fee(s) paid
	19.12.2005	Examination fee paid
Examination procedure	19.12.2005	Examination requested [2006/51]
	22.06.2010	Despatch of a communication from the examining division (Time limit: M06)
	23.12.2010	Reply to a communication from the examining division
	27.09.2011	Despatch of a communication from the examining division (Time limit: M06)
	15.05.2012	Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time
	11.07.2012	Reply to a communication from the examining division
	17.05.2013	Cancellation of oral proceeding that was planned for 21.05.2013
	21.05.2013	Date of oral proceedings (cancelled)
	13.06.2013	Communication of intention to grant the patent
	11.10.2013	Fee for grant paid
	11.10.2013	Fee for publishing/printing paid
Divisional application(s)	The date of the Examining Division's first communication in respect of the earliest application for which a communication has been issued is 22.06.2010
Opposition(s)	28.08.2014	No opposition filed within time limit [2014/45]
Request for further processing for:	The application is deemed to be withdrawn due to failure to reply to the examination report
	12.07.2012	Request for further processing filed
	12.07.2012	Full payment received (date of receipt of payment) Request granted
	25.07.2012	Decision despatched
Fees paid	Renewal fee
	14.03.2007	Renewal fee patent year 03
	14.03.2008	Renewal fee patent year 04
	31.03.2008	Renewal fee patent year 05
	15.03.2010	Renewal fee patent year 06
	08.03.2011	Renewal fee patent year 07
	26.03.2012	Renewal fee patent year 08
	25.03.2013	Renewal fee patent year 09
Opt-out from the exclusive Tooltip competence of the Unified Patent Court	See the Register of the Unified Patent Court for opt-out data
	Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Documents cited:	Search	[A]US2002018560 (LAUTER KRISTIN E [US], et al) [A] 1-20 * paragraph [0044] - paragraph [0049] * * paragraph [0051] - paragraph [0053] ** paragraph [0054] - paragraph [0055] *;
		[I]EP1249963 (HITACHI LTD [JP]) [I] 1-20 * paragraph [0054] and [0067] * * paragraph [0155] *;
		[I]EP1304829 (MATSUSHITA ELECTRIC IND CO LTD [JP]) [I] 1-20 * paragraph [0024] - paragraph [0025] * * paragraph [0067] - paragraph [0074]; figure 2a *;
		[A] - SHOUP V ED - PRENEEL B (ED), "USING HASH FUNCTIONS AS A HEDGE AGAINST CHOSEN CIPHERTEXT ATTACK", ADVANCES IN CRYPTOLOGY - EUROCRYPT 2000. INTERNATIONAL CONF. ON THE THEORY AND APPLICATION OF CRYPTOGRAPHIC TECHNIQUES. BRUGES, BE, MAY 14 20000514 SPRINGER, BERLIN, DE, (20000514), VOL. 1807, ISBN 978-3-540-67517-4, pages 275 - 288, XP000896063 [A] 8,12,16,18-20 * paragraph [04.2] *
	International search	[A]JP2000516733
		[A] - SHOUP V. ET AL, "OAEP Reconsidered (Entended Abstract)", LNCS., (2001), vol. 2139, pages 239 - 259, XP000988705
		[A] - NGUYEN P.Q. AND POINTCHEVAL D. ET AL, "Analysis and Improvements of NTRU Encryption Paddings.", LNCS., (2002), vol. 2442, pages 210 - 225, XP002989876 DOI: http://dx.doi.org/10.1007/3-540-45708-9_14
	by applicant	EP1304829
		EP1249963

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