Global patent index - EP 1044533 A1

EP 1044533 A1 2000-10-18 - ENCODING METHOD FOR CARRYING OUT CRYPTOGRAPHIC OPERATIONS

Title (en)

ENCODING METHOD FOR CARRYING OUT CRYPTOGRAPHIC OPERATIONS

Title (de)

VERSCHLÜSSELUNGSVERFAHREN ZUM AUSFÜHREN VON KRYPTOGRAPHISCHEN OPERATIONEN

Title (fr)

PROCEDE DE CODAGE PERMETTANT DE REALISER DES OPERATIONS CRYPTOGRAPHIQUES

Publication

EP 1044533 A1 (DE)

Application

EP 99948819 A

Priority

  • DE 19845095 A
  • DE 19936918 A
  • EP 9907012 W

Abstract (en)

[origin: WO0019656A1] The invention relates to an encoding method and an encoding device. At least one partial cryptographic operation yi=fi(xi, ki) is carried out by data xi, ki which are digitally stored as data bit words and the result or intermediate results yi are digitally stored or temporarily stored as data bit words. At least one of the data xi, ki and/or the result or at least intermediate result yi is optionally complemented or not bit by bit to <o>ae</o>i, <o>k</o>i and/or <o>y</o>i, in accordance with a control signal ri based on random numbers.

IPC 1-7 (main, further and additional classification)

H04L 9/06

IPC 8 full level (invention and additional information)

H04L 9/10 (2006.01); G06F 7/00 (2006.01); H04L 9/06 (2006.01)

CPC (invention and additional information)

G06F 7/00 (2013.01); H04L 9/003 (2013.01); G06F 2207/7233 (2013.01); H04L 2209/08 (2013.01)

Citation (search report)

See references of WO 0019656A1

Designated contracting state (EPC)

AT DE FR GB

EPO simple patent family

WO 0019656 A1 20000406; EP 1044533 A1 20001018; JP 2003524916 A 20030819

INPADOC legal status

2010-06-16 [18D] DEEMED TO BE WITHDRAWN

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- Effective date: 20091229

2008-11-05 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: NXP B.V.

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2008-02-20 [17Q] FIRST EXAMINATION REPORT

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- Effective date: 20080122

2007-08-01 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: NXP B.V.

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2007-08-01 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH

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2004-05-26 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

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- Designated State(s): AT DE FR GB

2003-05-14 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V.

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2003-05-14 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH

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2002-10-09 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V.

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2002-10-09 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: PHILIPS CORPORATE INTELLECTUAL PROPERTY GMBH

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2000-12-06 [17P] REQUEST FOR EXAMINATION FILED

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- Effective date: 20001006

2000-10-18 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE