Storing medium converting method, program and device

一种存储介质、转换方法的技术，应用在存储介质转换领域，能够解决忽视版权等问题

Inactive Publication Date: 2007-05-02
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the ease with which this content can be reproduced, illegal acts that ignore copyright can easily occur

Method used

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  • Storing medium converting method, program and device
  • Storing medium converting method, program and device
  • Storing medium converting method, program and device

Examples

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Embodiment Construction

[0043] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] (first embodiment)

[0045] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0046] FIG. 3 is a schematic diagram showing the configuration of a storage medium conversion system applied to a storage medium conversion method according to a first embodiment of the present invention. FIG. 4 is a diagram showing compatibility according to this embodiment. Portions similar to those of FIGS. 1 and 2 are denoted by like reference numerals, and detailed descriptions thereof will be omitted here. The different parts will be mainly described below. Similarly, for different embodiments, repeated descriptions will be avoided.

[0047] That is, according to this embodiment, the stored content of the SC card (first storage medium) SDq as the first encryption system of the encryption double...

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PUM

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Abstract

The user terminal (20) converts the stored content of the SD card (SDq) to include second encrypted content key data (Enc(Kmu, Kc)) equivalent to the encrypted title key of SD audio and encrypted content equivalent to SD audio The encrypted content of (Enc(Kc, C)). Accordingly, compatibility can be achieved between the encryption double key system as the first encryption system and the encryption (single) key system as the second encryption system.

Description

technical field [0001] The present invention relates to a storage medium conversion method, program and device capable of converting the stored content of a first storage medium so that the first storage medium conforming to an encrypted double key system such as MQbic (registered trademark) can conform to a system such as SD Audio An encrypted (single) key system such as . Background technique [0002] Recently, the development of the information society has been accompanied by the widespread use of content distribution systems that distribute computerized contents of books, newspapers, music, or moving images (hereinafter simply referred to as "contents") to user terminals so that users can read fetch content. [0003] However, due to the ease with which this content can be copied, illegal acts that ignore copyright can easily occur. Accordingly, from the viewpoint of protecting the content from illegal copying, the content is usually encrypted with an encryption key, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08G06F12/14G06F21/62G06F21/10G06F21/44G06F21/60
CPCG11B20/00442G11B2220/17G11B20/00086G06F21/10G11B20/00478
Inventor 笠原章裕三浦显彰嵩比呂志中野一典石田茂
Owner KK TOSHIBA
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