Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2006-06-06
2010-06-08
Jung, David Y (Department: 2434)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S170000, C713S193000, C380S281000, C380S284000, C726S007000, C726S027000
Reexamination Certificate
active
07734920
ABSTRACT:
An information processing apparatus, an information processing method, and an information providing medium are provided. Encrypted information, an encrypted first key for decrypting the encrypted information, and a second key for decrypting the first key are processed to store the information in a storage medium. To be more specific, cross certification is executed with the storage medium, the first key is decrypted by the second key, the decrypted first key is encrypted, and the decrypted first key and the encrypted information are stored in the storage medium. The novel constitution prevents unauthorized replication of information by use of a low-cost, general-purpose semiconductor memory.
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Finnegan Henderson Farabow Garrett & Dunner LLP
Jung David Y
Sony Corporation
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