Invention Grant
US07996907B2 Data recording method, data recording system, data recording apparatus, data reading method, data reading system, counting method, counting system, method of supplying encryption key, system for supplying encryption key and program
失效
数据记录方法，数据记录系统，数据记录装置，数据读取方法，数据读取系统，计数方法，计数系统，提供加密密钥的方法，用于提供加密密钥和程序的系统
- Patent Title: Data recording method, data recording system, data recording apparatus, data reading method, data reading system, counting method, counting system, method of supplying encryption key, system for supplying encryption key and program
- Patent Title (中): 数据记录方法，数据记录系统，数据记录装置，数据读取方法，数据读取系统，计数方法，计数系统，提供加密密钥的方法，用于提供加密密钥和程序的系统
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Application No.: US10368979Application Date: 2003-02-18
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Publication No.: US07996907B2Publication Date: 2011-08-09
- Inventor: Kaoru Kakinuma , Kazuki Matsumoto
- Applicant: Kaoru Kakinuma , Kazuki Matsumoto
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Dillon & Yudell LLP
- Main IPC: G06F17/30
- IPC: G06F17/30 ; G06F12/14
Abstract:
Data recorded in a recording medium is encrypted with an encryption/decryption key, and the encryption/decryption key is encrypted with an encryption-only key. The encrypted encryption/decryption key is embedded in encrypted data. A decryption-only key the encryption/decryption key is embedded in a program for reading. The data and the program for reading are recorded in the recording medium. The data cannot be read without the program for reading. The program for reading cannot be used for recording other data even if it is copied.
Public/Granted literature
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