发明名称 |
CONTENT DISTRIBUTION SYSTEM AND CONTENT DISTRIBUTION METHOD |
摘要 |
In a content delivery system, delivery of content and charging the fee of the content are performed and managed in a highly secure and effective fashion. If a content-purchasing request is transmitted from a user device to a shop server, a charging process is performed. A user device authentication server, which manages content delivery, converts an encrypted content key KpDAS(Kc) encrypted using a public key of the user device authentication server (DAS) into an encrypted content key KpDEV(Kc) encrypted using a public key KpDEV of the user device. If the charging process is successfully completed, the shop server transmits, to the user device, the encrypted content key KpDEV(Kc). |
申请公布号 |
EP1237321(A4) |
申请公布日期 |
2006.11.15 |
申请号 |
EP20010983795 |
申请日期 |
2001.11.01 |
申请人 |
SONY COMPUTER ENTERTAINMENT INC.;SONY CORPORATION |
发明人 |
YOSHINO, KENJI;ISHIBASHI, YOSHIHITO;AKISHITA, TORU;SHIRAI, TAIZO;OKA, MAKOTO;YOSHIMORI, M. |
分类号 |
H04L9/00;H04N7/173;G06F1/00;G06F21/00;G06F21/10;G06F21/33;G06F21/44;G06F21/62;G06Q10/00;G06Q30/06;G06Q50/00;G06Q50/10;G09C1/00;H04L9/08;H04L9/32;H04L29/06;H04N7/167;H04N21/239;H04N21/266 |
主分类号 |
H04L9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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