公开(公告)号：WO2006086721A2

公开(公告)日：2006-08-17

申请号：PCT/US2006004901

申请日：2006-02-10

Applicant: QUALCOMM INC ,  PADDON MICHAEL ,  ROSE GREGORY GORDON ,  SEMPLE JAMES ,  HAWKES PHILIP MICHAEL

Inventor： PADDON MICHAEL ,  ROSE GREGORY GORDON ,  SEMPLE JAMES ,  HAWKES PHILIP MICHAEL

IPC: H04L9/08

CPC classification number: H04L9/085

Abstract: In a communication system in which two communication entities seek to have a private or confidential communication session, a trust relationship needs first be established. The trust relationship is based on the determination of a shared secret which in turn is generated from contextual information. The contextual information can be derived from the circumstances surrounding the communication session. For example, the contextual information can include topological information, time-based information, and transactional information. The shared secret may be self-generated or received from a third party. In either event, the shared secret may be used as key material for any cryptographic protocol used between the communication entities.

Abstract translation: 在两个通信实体寻求私人或机密通信会话的通信系统中，首先需要建立信任关系。 信任关系是基于共同的秘密的确定，而这个秘密又是从上下文信息中产生的。 上下文信息可以从通信会话周围的情况导出。 例如，上下文信息可以包括拓扑信息，基于时间的信息和事务信息。 共享密钥可以是自生产的或从第三方接收的。 在任一情况下，共享秘密可以用作在通信实体之间使用的任何加密协议的关键材料。

公开(公告)号：WO2005029762A3

公开(公告)日：2005-06-23

申请号：PCT/US2004028677

申请日：2004-09-02

Applicant: QUALCOMM INC ,  SEMPLE JAMES ,  ROSE GREGORY G

Inventor： SEMPLE JAMES ,  ROSE GREGORY G

IPC: H04L9/08 ,  H04L9/30 ,  H04L9/32 ,  H04L12/56 ,  H04L29/06

CPC classification number: H04L63/067 ,  H04L9/0822 ,  H04L9/3242 ,  H04L9/3247 ,  H04L63/0823 ,  H04L63/123 ,  H04L63/126 ,  H04L2209/60 ,  H04L2209/80 ,  H04W4/06 ,  H04W12/04 ,  H04W12/06 ,  H04W12/10

Abstract: A method and apparatus for secure generation of a short-term key SK for viewing information content in a Multicast-broadcast-multimedia system are described. A short-term key is generated by a memory module residing in user equipment (UE) only when the source of the information used to generate the short-term key can be validated. A short-term key can be generated by a Broadcast Access Key (BAK) or a derivative of BAK and a changing value with a Message Authentication Code (MAC) appended to the changing value. A short-term key (SK) can also be generated by using a private key and a short-term key (SK) manager with a corresponding public key distributed to the memory module residing in the user equipment (UE), using a digital signature.

Abstract translation: 描述了用于在多播广播多媒体系统中安全生成用于观看信息内容的短期密钥SK的方法和设备。 仅当用于生成短期密钥的信息的来源可以被验证时，短期密钥由驻留在用户设备（UE）中的存储器模块生成。 短期密钥可以由广播接入密钥（BAK）或BAK的衍生物生成，并且可以通过将消息认证码（MAC）附加到改变的值来改变值。 短期密钥（SK）也可以通过使用私钥和短期密钥（SK）管理器来生成，所述私有密钥和短期密钥（SK）管理器使用数字签名将相应的公钥分发给驻留在用户设备（UE）中的存储器模块 。