LandOfFree - US Patents - Listing for Cryptography

Cryptography – Cryptanalysis

Antijam improvement method and apparatus

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

Aperiodic encryption for digital data

Cryptography – Electric signal modification – Having production of printed copy

Apparatus and materials for two-stage printing of value indicia

Cryptography – Key management – Having particular key generator

Apparatus and method for a pseudo-random number generator for hi

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm

Apparatus and method for access control

Cryptography – Video cryptography – Video electric signal modification

Apparatus and method for an iterative cryptographic block

Cryptography – Video cryptography – Video electric signal modification

Apparatus and method for an iterative cryptographic block

Cryptography – Video cryptography – Video electric signal modification

Apparatus and method for an iterative cryptographic block

Cryptography – Communication system using cryptography – Wireless communication

Apparatus and method for applying ciphering in a universal...

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm

Apparatus and method for authenticating transmitting application

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm

Apparatus and method for authentication and encryption of a remo

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm

Apparatus and method for authentication and session key exchange

Cryptography – Electric signal modification – Having production of printed copy

Apparatus and method for authentication of printed documents

Cryptography – Video cryptography – Video electric signal modification

Apparatus and method for broadcast services transmission and...

Cryptography – Cryptanalysis

Apparatus and method for certifying the delivery of information

Cryptography – Key management – Having particular key generator

Apparatus and method for changing the behavior of a computer pro

Cryptography – Communication system using cryptography – Time segment interchange

Apparatus and method for cipher processing system using...

Cryptography – Communication system using cryptography – Time segment interchange

Apparatus and method for cipher stealing when encrypting MPEG tr

Cryptography – Cryptanalysis

Apparatus and method for comprehensive copy protection for video