Invention Grant
- Patent Title: Information processing apparatus, information processing method, information providing medium, information decryption apparatus, and information recording medium
- Patent Title (中): 信息处理装置,信息处理方法,信息提供介质,信息解密装置和信息记录介质
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Application No.: US11447260Application Date: 2006-06-06
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Publication No.: US07734920B2Publication Date: 2010-06-08
- Inventor: Yoshihito Ishibashi
- Applicant: Yoshihito Ishibashi
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
- Priority: JP10-281087 19981002
- Main IPC: H04L9/00
- IPC: H04L9/00 ; G06F11/00

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.
Public/Granted literature
Information query