4. Cryptography
  5. Cryptanalysis

Makoto Yoshioka

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Apparatus and method for controlling storage medium using securi

Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Patent

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Content sales period verifying system and content decryption...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate

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Content sales price accounting system and accounting method ther

Data processing: financial – business practice – management – or co – Automated electrical financial or business practice or... – Accounting
Patent

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Content usage control system, content usage apparatus,...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate

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Data distribution system and recording device for use therein

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate

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Profile ID: LFUS-PAI-P-54959

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