LandOfFree - US Patents - Listing for Cryptography

Cryptography – Key management – Having particular key generator

Analog television with regenerable and encryptable signals

Cryptography – Key management – Having particular key generator

Analog/digital system for television services

Cryptography – Communication system using cryptography – Time segment interchange

Analogue scrambling system with dynamic band permutation

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm

Anonymous credit card transactions

Anonymous information retrieval system (ARS)

Cryptography – Key management

Anonymous transactions based on distributed processing

Reexamination Certificate

Anti-copying video signal processing

Cryptography – Electric signal modification – Having production of printed copy

Anti-counterfeiting method and apparatus using digital screening

Cryptography – Electric signal modification – Having production of printed copy

Anti-counterfeiting process using lenticular optics and color ma

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm

Anti-fraud verification system using a data card

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm

Anti-fraud voter registration and voting system using a data car

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm

Anti-piracy system for wireless telephony

Cryptography – Key management – Having particular key generator

Anti-spoof without error extension (ANSWER)

Anti-taping method and apparatus for a multiplexed analog compon

Cryptography – Key management – Having particular key generator

Anti-virus agent for use with databases and mail servers

Cryptography – By modifying optical image

Anticounterfeiting method and device utilizing holograms and pse

Antijam improvement method and apparatus

Cryptography – Communication system using cryptography – Data stream/substitution enciphering

Aperiodic encryption for digital data

Reexamination Certificate

Cryptography – Electric signal modification – Having production of printed copy

Apparatus and materials for two-stage printing of value indicia

Reexamination Certificate