发明公开
EP1758290A1 STORING MEDIUM CONVERTING METHOD, PROGRAM AND DEVICE
审中-公开
SPEICHERMEDIENKONVERTIERUNGSVERFAHREN，程序在VORRICHTUNG
- 专利标题： STORING MEDIUM CONVERTING METHOD, PROGRAM AND DEVICE
- 专利标题（中）： SPEICHERMEDIENKONVERTIERUNGSVERFAHREN，程序在VORRICHTUNG
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申请号： EP05743763.4申请日： 2005-05-25
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公开(公告)号： EP1758290A1公开(公告)日： 2007-02-28
- 发明人: KASAHARA, Akihiro Toshiba Corporation , MIURA, Akira Toshiba Corporation , SUU, Hiroshi Toshiba Corporation , NAKANO, Kazunori Toshiba Corporation , ISHIDA, Shigeru Toshiba Corporation
- 申请人： KABUSHIKI KAISHA TOSHIBA
- 申请人地址： 1-1 Shibaura 1-chome, Minato-ku Tokyo 105-8001 JP
- 专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人地址： 1-1 Shibaura 1-chome, Minato-ku Tokyo 105-8001 JP
- 代理机构： Henkel, Feiler & Hänzel
- 优先权： JP2004156456 20040526
- 国际公布： WO2005117332 20051208
- 主分类号： H04L9/08
- IPC分类号： H04L9/08 ; G06F12/14
摘要：
A user terminal (20) converts stored contents of an SD card (SDq) to contain second encrypted content key data (Enc (Kmu, Kc)) equivalent to an encrypted title key of SD Audio, and encrypted content (Enc (Kc, C)) equivalent to encrypted content of the SD Audio. Accordingly, compatibility can be realized between an encryption dual key system as a first encryption system and an encryption (single) key system as a second encryption system.
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