LandOfFree - US Patents - Listing for Cryptography,Communication system using cryptography,Data stream/substitution enciphering

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Small size product cipher apparatus

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

Patent

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Stegotext encoder and decoder

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

Reexamination Certificate

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Stream cipher encryption and message authentication

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

Reexamination Certificate

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Stream cipher encryption method and apparatus that can...

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

Reexamination Certificate

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Stream cipher having a combiner function with storage based...

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

Reexamination Certificate

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Substitution permutation enciphering device

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

Patent

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System and method for authenticating/registering network...

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

Reexamination Certificate

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System and method for constructing block ciphers

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

Patent

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System and method for partially encrypted multimedia stream

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

Reexamination Certificate

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System and method for protecting data in a secure system

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

Reexamination Certificate

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System and method for securing data

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

Reexamination Certificate

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System for fast scrambling and descrambling of data

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

Reexamination Certificate

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System for providing keys

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

Reexamination Certificate

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Techniques to strengthen one-time pad encryption

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

Reexamination Certificate

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Transmission/reception system

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

Reexamination Certificate

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Variable-length key cryptosystem

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

Reexamination Certificate

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