EP 1997000 A1 20081203 - CRYPTOGRAPHIC METHOD WITH ELLIPTICAL CURVES
Title (en)
CRYPTOGRAPHIC METHOD WITH ELLIPTICAL CURVES
Title (de)
KRYPTOGRAPHISCHES VERFAHREN MIT ELLIPTISCHEN KURVEN
Title (fr)
PROCEDE CRYPTOGRAPHIQUE À COURBES ELLIPTIQUES
Publication
Application
Priority
- EP 2007052075 W 20070306
- DE 102006013515 A 20060323
Abstract (en)
[origin: WO2007107450A1] The invention relates to a method for determining an elliptical curve, suitable for a cryptographic method, comprising the following steps: (a) an elliptical curve to be tested is prepared; (b) the order of a twisted elliptical curve associated with the elliptical curve to be tested is determined; (c) it is automatically checked whether the order of the twisted elliptical curve is a strong prime number; and (d) if the order of the twisted elliptical curve is a strong prime number, the elliptical curve to be tested is selected as an elliptical curve suitable for cryptographical methods.
IPC 8 full level
G06F 7/72 (2006.01)
CPC (source: EP KR US)
G06F 3/03 (2013.01 - KR); G06F 7/72 (2013.01 - KR); G06F 7/725 (2013.01 - EP US); G06F 21/00 (2013.01 - KR); G06F 2207/7219 (2013.01 - EP US)
Citation (search report)
See references of WO 2007107450A1
Citation (examination)
BROWN D R L ET AL: "The Static Diffie-Hellman Problem", 23 June 2005 (2005-06-23), pages 1 - 17, XP002533452, Retrieved from the Internet <URL:http://eprint.iacr.org/2004/306.ps>
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 2007107450 A1 20070927; CN 101410792 A 20090415; CN 101410792 B 20130306; DE 102006013515 A1 20071004; EP 1997000 A1 20081203; JP 2009531726 A 20090903; JP 2012123426 A 20120628; KR 101391216 B1 20140502; KR 20080111089 A 20081222; US 2009285388 A1 20091119; US 8582761 B2 20131112
DOCDB simple family (application)
EP 2007052075 W 20070306; CN 200780010399 A 20070306; DE 102006013515 A 20060323; EP 07726643 A 20070306; JP 2009501996 A 20070306; JP 2012069762 A 20120326; KR 20087025841 A 20081022; US 22548007 A 20070306