EP 2353250 A4 20130529 - METHOD AND SYSTEM FOR SYNCHRONIZATION OF CRYPTOGRAPHIC DEVICES FOR GSM VOICE CHANNEL ENCRYPTION
Title (en)
METHOD AND SYSTEM FOR SYNCHRONIZATION OF CRYPTOGRAPHIC DEVICES FOR GSM VOICE CHANNEL ENCRYPTION
Title (de)
VERFAHREN UND SYSTEM ZUR SYNCHRONISATION VON KRYPTOGRAPHIEGERÄTEN ZUR GSM-SPRACHKANALVERSCHLÜSSELUNG
Title (fr)
PROCEDE ET SYSTEME DE SYNCHRONISATION DE DISPOSITIFS CRYPTOGRAPHIQUES POUR CHIFFREMENT DE CANAUX VOCAUX GSM
Publication
Application
Priority
- MY 2009000191 W 20091112
- MY PI20084590 A 20081114
Abstract (en)
[origin: WO2010056106A2] The present invention discloses a method and system for providing or ensuring synchronization of cryptographic devices for transmission of data within a voice channel, particularly the GSM voice channel network. The transmission source (100) is configured to generate several cycles of 32-bit digital zeros data prior to transmitting the encrypted data to the reception source (200). Accordingly, the transmission of digital zeros data provides sufficient time for the reception source (200) to prepare for receiving the encrypted data from the transmission source (100) and thereby assisting in synchronization of devices initialization for data transmission.
IPC 8 full level
H04L 7/00 (2006.01); H04L 9/06 (2006.01); H04L 9/12 (2006.01); H04W 12/04 (2009.01)
CPC (source: EP US)
H04L 9/065 (2013.01 - EP US); H04W 12/033 (2021.01 - EP US); H04L 2209/80 (2013.01 - EP)
Citation (search report)
- [Y] US 3659046 A 19720425 - ANGELERI EMANUELE, et al
- [Y] US 4817148 A 19890328 - LAFFERTY STEPHEN H [US], et al
- [A] US 2005232422 A1 20051020 - LIN JINGDONG [US], et al
- [A] US 5487066 A 19960123 - MCNAMARA ROBERT P [US], et al
- [A] EP 1111956 A2 20010627 - ALCATEL USA SOURCING LP [US]
- [A] US 6516004 B1 20030204 - DOUADY CESAR [FR], et al
- See references of WO 2010056106A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010056106 A2 20100520; WO 2010056106 A3 20100910; EP 2353250 A2 20110810; EP 2353250 A4 20130529; MY 152148 A 20140815
DOCDB simple family (application)
MY 2009000191 W 20091112; EP 09826332 A 20091112; MY PI20084590 A 20081114