Inventor

LOTSPIECH JEFFREY BRUCE

US53 patents

⚠️ This page may combine multiple inventors who share the name “LOTSPIECH JEFFREY BRUCE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LOTSPIECH JEFFREY BRUCE

IBM

System and method for securely checking in and checking out digitized content

System for encrypting broadcast programs in the presence of compromised receiver devices

Method for broadcast encryption and key revocation of stateless receivers

Content guard system for copy protection of recordable media

Method and system for protection of digital information

System for encrypting broadcast programs in the presence of compromised receiver devices

System and method for securely updating copy-protected media

Intermediate system transmitting relevant selections based on permutation function applied consumer/information signature vectors for privacy

Method for assigning encryption keys

Method and system for client/server communications with user information revealed as a function of willingness to reveal and whether the information is required

System and method for assigning sequence keys to a media player to enable hybrid traitor tracing

System and method to proactively detect software tampering

Coincidence-free media key block for content protection for recordable media

High speed color compensation system

Read/write media key block

Method for tracing traitor receivers in a broadcast encryption system

Method for assigning encryption keys

Method and system for protection of digital information

LFSR implementation using split-table lookup

Method for effective tamper resistance

Content guard system for copy protection of recordable media

System and method to securely store information in a recoverable manner on an untrusted system

System, method, and service for performing unified broadcast encryption and traitor tracing for digital content

System and method for cryptographically authenticating data items

Method for tracing traitors and preventing piracy of digital content in a broadcast encryption system

Forensic media key block for identifying compromised keys

Fault intolerant cipher chaining

Method for ensuring content protection and subscription compliance

System and method for authorized compression of digitized music

System and method for protecting a title key in a secure distribution system for recordable media content

System and method for guaranteeing software integrity via combined hardware and software authentication

Method for broadcast encryption and key revocation of stateless receivers

Method for broadcast encryption and key revocation of stateless receivers

System and method for tracing Tardos fingerprint codes

System and method for assigning sequence keys to a media player to enable flexible traitor tracing

System and method to proactively detect software tampering

System and method for tracing tardos fingerprint codes

System, method, and service for tracing traitors from content protection circumvention devices

JIN HONGXIA

Unified broadcast encryption system

Unified broadcast encryption system

Adaptive traitor tracing

Renewable traitor tracing

Security classes in a media key block

Traitor detection for multilevel assignment

Tracing traitor coalitions and preventing piracy of digital content in a broadcast encryption system

MARKING AARON

Simple nonautonomous peering media clone detection

COLLAR BRADLEY

System, method, and service for delivering multimedia content by means of a permission to decrypt titles on a physical media

WARNER BROS ENTERTAINMENT INC

Simple nonautonomous peering media clone detection

LOTSPIECH JEFFREY BRUCE

Broadcast encryption with dual tree sizes

BELLWOOD THOMAS ALEXANDER

Recording keys in a broadcast-encryption-based system