发明授权
- 专利标题: Super-distribution of protected digital content
- 专利标题(中): 超级分发受保护的数字内容
-
申请号: US09711431申请日: 2000-11-13
-
公开(公告)号: US06983371B1公开(公告)日: 2006-01-03
- 发明人: Marco M. Hurtado , James C. Mahlbacher , Richard L. Spagna
- 申请人: Marco M. Hurtado , James C. Mahlbacher , Richard L. Spagna
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Fleit, Kain, Gibbons, Gutman, Bongini & Bianco P.L.
- 代理商 David M. Shofi; Jon A. Gibbons
- 主分类号: G06F11/30
- IPC分类号: G06F11/30 ; G06F17/60 ; H04K1/00 ; H04L9/00 ; H04L9/32
摘要:
Briefly according to the present invention, a system, computer readable medium and method to deliver encrypted digital content to from a first system for playing the content to a second system for playing the content. The method on the first user system comprising the steps of: reading from a computer readable medium metadata which has previously been associated with the content; selecting from the metadata associated content to decrypt; establishing a secure connection with an authorization authority, such as a clearinghouse, for decrypting the key used to encrypt the content; receiving a secure container containing the decrypting key for decrypting at least part of the previously encrypted content as permitted; decrypting the content and then encrypting the content with a new encryption key that is generated locally on the end user system.
信息查询