Inventor
SCHWENK JOERG
DE23 patents
Patents
23 patentsUS6222923B1Apr 24, 2001
Method for securing system protected by a key hierarchy
DEUTSCHE TELEKOM AG183 citations98
US7970135B1Jun 28, 2011
Method for the secure, distributed generation of an encryption key
DEUTSCHE TELEKOM AG31 citations92
US7035405B1Apr 25, 2006
Method for establishing a common key between a central station and a group of subscribers
DEUTSCHE TELEKOM AG23 citations92
US5787178AJul 28, 1998
Computerized method for signing a message
DEUTSCHE TELEKOM AG22 citations92
US7222234B2May 22, 2007
Method for key agreement for a cryptographic secure point—to—multipoint connection
DEUTSCHE TELEKOM AG24 citations91
US6760445B1Jul 6, 2004
Method for identifying betrayers of proprietary data
DEUTSCHE TELEKOM AG21 citations90
US6590995B1Jul 8, 2003
Method of inserting manipulation-proof digital fingerprints into electronic documents
DEUTSCHE TELEKOM AG20 citations90
US7162037B1Jan 9, 2007
Method for generating/regenerating an encryption key for a cryptographic method
DEUTSCHE TELEKOM AG17 citations84
US7555649B1Jun 30, 2009
Method for generating digital watermarks for electronic documents
DEUTSCHE TELEKOM AG11 citations81
US7480635B2Jan 20, 2009
Method for financing multimedia content through advertising
DEUTSCHE TELEKOM AG12 citations79
US6901513B1May 31, 2005
Process for generating a digital signature and process for checking the signature
DEUTSCHE TELEKOM AG8 citations74
US5903649AMay 11, 1999
Method for establishing a common code for authorized persons through a central office
DEUTSCHE TELEKOM AG14 citations73
US6636613B1Oct 21, 2003
Method for embedding manipulation-secure digital fingerprints into electronic documents
DEUTSCHE TELEKOM AG11 citations71
US6721421B1Apr 13, 2004
Method for encrypting information represented as a numerical value
DEUTSCHE TELEKOM AG2 citations63
US7606369B1Oct 20, 2009
Process for establishing a common cryptographic key for N subscribers
DEUTSCHE TELEKOM AG2 citations62
US7164766B2Jan 16, 2007
Method for addressing terminals
DEUTSCHE TELEKOM AG4 citations62
US6991176B1Jan 31, 2006
Method for generating identification numbers
DEUTSCHE TELEKOM AG5 citations61
US7778423B2Aug 17, 2010
Method for establishing a common key for a group of at least three subscribers
DEUTSCHE TELEKOM AG4 citations59
US7333617B1Feb 19, 2008
Method for establishing a common key for a group of at least three subscribers
DEUTSCHE TELEKOM AG3 citations59
US7340758B1Mar 4, 2008
Method and device for routing of specific data, particularly receiving rights, in a pay-TV terminal
DEUTSCHE TELEKOM AG2 citations55
US7793327B2Sep 7, 2010
Terminal device and method for using different services offered via a telecommunications network
DEUTSCHE TELEKOM AG5 citations52
US5835598ANov 10, 1998
Public key method of encoding data
DEUTSCHE TELEKOM AG1 citations52
US7194440B2Mar 20, 2007
Billing method using SSL/TLS
DEUTSCHE TELEKOM AG0 citations50