ENCRYPTION IN COMMUNICATIONS SYSTEMS USING OVER-THE-AIR REKEYING - Patent 1779585

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EP 1 779 585 A1

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(43)	Date of publication:
	02.05.2007 Bulletin 2007/18

(21)	Application number: 05772055.9

(22)	Date of filing: 12.08.2005

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International Patent Classification (IPC):

H04L 9/08^(2006.01)

(86)	International application number:
	PCT/GB2005/003178

(87)	International publication number:
	WO 2006/016181 (16.02.2006 Gazette 2006/07)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

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Priority:

12.08.2004 GB 0418024

(71)	Applicant: Sepura Limited
	Cambridge CB4 1GR (GB)

(72)	Inventor:
	RAYNE, Mark Wentworth Cambridgeshire CB6 3ND (GB)

(74)	Representative: Tothill, John Paul
	Frank B. Dehn & Co. St Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)

(54)	ENCRYPTION IN COMMUNICATIONS SYSTEMS USING OVER-THE-AIR REKEYING