Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
鍵管理プロトコルを保護するための対称鍵を設ける方法
Document Type and Number:
Japanese Patent JP2010505313
Kind Code:
A
Abstract:
Cryptographic material is generated for a protocol for the encrypted transmission of media data between a subscriber device and a provider device. A first symmetric key of the subscriber device and the provider device is inserted in a symmetric key protection mechanism of a network protocol of a control layer to establish a communication session between the subscriber device and the provider device. A first time-variable parameter is transmitted from the provider device to the subscriber device. A second symmetric key for protecting the key management protocol is calculated by both the provider device and the subscriber device using a defined function depending at least on the first symmetric key and the first time-variable parameter.

Inventors:
Wolfgang Bucker
Gunther Horn
Srinath Tilwenga Dam
Application Number:
JP2009529672A
Publication Date:
February 18, 2010
Filing Date:
September 24, 2007
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Siemens Aktiengesellschaft
International Classes:
H04L9/08
Domestic Patent References:
JP2002290391A2002-10-04
Foreign References:
US20060062393A12006-03-23
US20050063544A12005-03-24
Other References:
JPN6011059773; 3GPP Organizational Partners: 'Access security for IP-based services (Release 5)' 3GPP TS 33.203 V5.1.0 , 200203
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Reinhard Einsel