4. Cryptography
  5. Particular algorithmic function encoding
  6. Nbs/des algorithm

David Robert Safford

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Computer system apparatus and method for improved assurance...

Electrical computers and digital processing systems: support – System access control based on user identification by...
Reexamination Certificate

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Encrypted file system using TCPA

Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate

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Interoperable cryptographic key recovery system

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
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Interoperable cryptographic key recovery system with verificatio

Cryptography – Key management – Key escrow or recovery
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Method and apparatus for a symmetric block cipher using...

Cryptography – Communication system using cryptography – Time segment interchange
Reexamination Certificate

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Profile ID: LFUS-PAI-P-631256

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