Global Patent Index - EP 1243097 A1

EP 1243097 A1 2002-09-25 - METHOD AND APPARATUS FOR A REVOLVING ENCRYPTING AND DECRYPTING PROCESS

Title (en)

METHOD AND APPARATUS FOR A REVOLVING ENCRYPTING AND DECRYPTING PROCESS

Title (de)

VERFAHREN UND VORRICHTUNG ZUR ROTIERENDEN VERSCHLÜSSELUNG UND ENTSCHLÜSSELUNG

Title (fr)

PROCEDE ET APPAREIL POUR UN PROCEDE TOURNANT DE CRYPTAGE ET DE DECRYPTAGE

Publication

EP 1243097 A1 (EN)

Application

EP 00992802 A

Priority

  • US 0042168 W
  • US 46151999 A

Abstract (en)

[origin: WO0147176A1] Refering to figure 1, a scheme for encryption and decryption of data between two computer stations operating in the Internet environment uses a cookie sent by servers (67) to transmit a key (75) for encryption and decryption. The key (75) can be the cookie value, or the cookie value can contain or encompass the key (75) in some form known to both machines.The server (67) may encrypt data for a client (79) using a key (75) also sent to the client (79) in a cookie, and the client (79) may then retrieve the key (75) and use it for decrypting data sent. Server (67) may also use the scheme in a variation to encrypt data on a client (79) machine. Two servers may use the scheme as well. In some cases a copy of an encryption/decryption (83) engine is sent as well, and in some cases the copy sent is temporary.

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

H04L 9/12; H04L 9/08

IPC 8 full level (invention and additional information)

G06F 15/00 (2006.01); H04L 9/08 (2006.01); H04L 29/06 (2006.01)

CPC (invention and additional information)

H04L 63/0428 (2013.01); H04L 63/0464 (2013.01); H04L 63/162 (2013.01)

Citation (search report)

See references of WO 0147176A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0147176 A1 20010628; AU 4707701 A 20010703; EP 1243097 A1 20020925; JP 2003518820 A 20030610

INPADOC legal status


2004-08-25 [18W] WITHDRAWN

- Effective date: 20040706

2002-11-20 [RIN1] INVENTOR (CORRECTION)

- Inventor name: SATYAVOLU, RAMAKRISHNA

2002-11-20 [RIN1] INVENTOR (CORRECTION)

- Inventor name: INALA, SUMAN, KUMAR

2002-11-20 [RIN1] INVENTOR (CORRECTION)

- Inventor name: SHAKHAR, DIMAKAR

2002-11-20 [RIN1] INVENTOR (CORRECTION)

- Inventor name: SREERANGA, RAJAN, P.

2002-09-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020711

2002-09-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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

2002-09-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI