EP 1661095 A1 20060531 - METHOD FOR TRANSMITTING PROTECTED INFORMATION TO SEVERAL RECEIVERS
Title (en)
METHOD FOR TRANSMITTING PROTECTED INFORMATION TO SEVERAL RECEIVERS
Title (de)
VERFAHREN ZUM ÜBERMITTELN VON GESCHÜTZTEN INFORMATIONEN AN MEHRERE EMPFÄNGER
Title (fr)
PROCEDE DE TRANSMISSION D'INFORMATIONS PROTEGEES A PLUSIEURS DESTINATAIRES
Publication
Application
Priority
- EP 2004051749 W 20040809
- DE 10336805 A 20030811
Abstract (en)
[origin: WO2005015514A1] The invention relates to first information which is determined for a first receiver. Said first information is transmitted together with secondary information, which is determined for a second receiver in a common information unit to the first receiver. The first information can be encrypted according to specifications of the first receiver. The secondary information, which can be made of several components, is encrypted according to the specifications of the second receiver, for example, with an open key, a so-called public key. Said public key encryption methods have various embodiments and security steps. Said methods ensure that the first receiver, upon receipt of the complete information, can not encrypt pieces of information therefor not intended therefor.
IPC 1-7
IPC 8 full level
G06Q 20/00 (2006.01); G06Q 30/00 (2006.01)
CPC (source: EP KR US)
G06F 15/00 (2013.01 - KR); G06Q 20/02 (2013.01 - EP US); G06Q 20/04 (2013.01 - EP US); G06Q 20/38215 (2013.01 - EP US); G06Q 20/3823 (2013.01 - EP US); G06Q 30/06 (2013.01 - EP US)
Citation (search report)
See references of WO 2005015514A1
Designated contracting state (EPC)
DE ES FI FR GB SE
DOCDB simple family (publication)
WO 2005015514 A1 20050217; DE 10336805 A1 20050623; EP 1661095 A1 20060531; KR 20060080174 A 20060707; RU 2006107531 A 20070920; US 2007277013 A1 20071129
DOCDB simple family (application)
EP 2004051749 W 20040809; DE 10336805 A 20030811; EP 04766452 A 20040809; KR 20067002850 A 20060210; RU 2006107531 A 20040809; US 56797204 A 20040809