EP 2014075 A1 20090114 - SPIT DEFENCE BY POSITIVE LISTS PROTECTED BY CRYPTOGRAPHIC KEYS
Title (en)
SPIT DEFENCE BY POSITIVE LISTS PROTECTED BY CRYPTOGRAPHIC KEYS
Title (de)
SPIT-ABWEHR DURCH MIT KRYPTOGRAFISCHEN SCHLÜSSELN ABGESICHERTE POSITIVLISTEN
Title (fr)
PREVENTION SPIT PAR DES LISTES POSITIVES SÉCURISÉES PAR DES CLÉS CRYPTOGRAPHIQUES
Publication
Application
Priority
- EP 2007053656 W 20070413
- DE 102006020244 A 20060427
Abstract (en)
[origin: DE102006020244B3] The method involves storing a public code, which is conveyed in a call processing message and time stamp, which is extracted with the help of public code from a signed crypto text with an initial condition, in the end system of a subscriber (B) during call of a subscriber (A). A verification of whether the time stamp lies within a predetermined interval for the current time is made. The request is rejected, when the time does not lie within the preset interval.
IPC 8 full level
H04M 7/00 (2006.01); H04L 29/06 (2006.01)
CPC (source: EP)
H04L 63/0823 (2013.01); H04L 63/12 (2013.01); H04L 65/1079 (2013.01); H04M 7/0078 (2013.01); H04L 2463/121 (2013.01)
Citation (search report)
See references of WO 2007125025A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DE 102006020244 B3 20070920; EP 2014075 A1 20090114; WO 2007125025 A1 20071108
DOCDB simple family (application)
DE 102006020244 A 20060427; EP 07728121 A 20070413; EP 2007053656 W 20070413