发明授权
- 专利标题: Protocol for protecting content protection data
- 专利标题(中): 保护内容保护数据的协议
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申请号: US12870053申请日: 2010-08-27
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公开(公告)号: US08792636B2公开(公告)日: 2014-07-29
- 发明人: Van Quy Tu , Herbert Anthony Little , Kristof Takacs
- 申请人: Van Quy Tu , Herbert Anthony Little , Kristof Takacs
- 申请人地址: CA Waterloo, Ontario
- 专利权人: BlackBerry Limited
- 当前专利权人: BlackBerry Limited
- 当前专利权人地址: CA Waterloo, Ontario
- 代理机构: Integral Intellectual Property Inc.
- 代理商 Miriam Paton
- 主分类号: G06F21/00
- IPC分类号: G06F21/00
摘要:
Through the use of a one-time-use nonce, the transfer of cryptographic data over a potentially insecure link in a two-factor content protection system is avoided. The nonce may be stored encrypted with a public key from a smart card. A random key may be used to produce a storage key, which is used to encrypt a content protection key. The random key may be stored, encrypted with a key derived from the nonce. Instead of receiving a raw content protection key over the potentially insecure link, the raw nonce is received and, once used, replaced with a new nonce.
公开/授权文献
- US20110211690A1 PROTOCOL FOR PROTECTING CONTENT PROTECTION DATA 公开/授权日:2011-09-01