4. Electrical computers and digital processing systems: support
  5. Data processing protection using cryptography
  6. By stored data protection

Yoji Kumazaki

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Content distribution server, key assignment method, content...

Cryptography – Key management – Key distribution
Reexamination Certificate

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Content playback apparatus method and program and key...

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

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Profile ID: LFUS-PAI-P-2428140

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