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Enabling business transactions in computer networks

Cryptography – Key management – Key distribution
Reexamination Certificate

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Encipher method and decipher method

Cryptography – Particular algorithmic function encoding
Patent

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Encipher method and decipher method

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent

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Encipher method and decipher method

Cryptography – Particular algorithmic function encoding
Patent

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Enciphered communication system

Cryptography – Equipment test or malfunction indication
Patent

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Enciphered file sharing method

Cryptography – Key management – Having particular key generator
Patent

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Enciphering and deciphering apparatus, and enciphering and...

Cryptography – Particular algorithmic function encoding
Reexamination Certificate

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Enciphering and deciphering apparatus, and enciphering and...

Cryptography – Particular algorithmic function encoding
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Enciphering apparatus and method, deciphering apparatus and...

Cryptography – Key management – Having particular key generator
Reexamination Certificate

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Enciphering apparatus and method, deciphering apparatus and...

Cryptography – Key management – Having particular key generator
Reexamination Certificate

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Enciphering apparatus and method, deciphering apparatus and...

Cryptography – Video cryptography – Copy protection or prevention
Reexamination Certificate

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Enciphering apparatus and method, deciphering apparatus and...

Cryptography – Key management – Having particular key generator
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Enciphering key distribution system for subscription TV broadcas

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent

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Enciphering method

Cryptography – Communication system using cryptography – Time segment interchange
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Enciphering/deciphering apparatus and method incorporating rando

Cryptography – Particular algorithmic function encoding
Patent

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Enciphering/deciphering device and method, and encryption/decryp

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent

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Enciphering/deciphering method and arrangement for performing th

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

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Encoded digital video content protection between transport...

Cryptography – Communication system using cryptography
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Encoder and decoder

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
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Encoder apparatus and decoder apparatus for a television signal

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent

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