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    • 54. 发明申请
    • METHOD AND SYSTEM FOR DISTRIBUTING KEY OF MEDIA STREAM
    • 用于分发媒体关键的方法和系统
    • US20090279705A1
    • 2009-11-12
    • US12508025
    • 2009-07-23
    • Kai SunTao KongJianghai GaoJing Li
    • Kai SunTao KongJianghai GaoJing Li
    • H04L9/08H04L9/06
    • H04L9/083H04L63/06
    • A method and a system for distributing key of media stream are provided. The method comprises: determining, by a security management server, whether a domain to which the calling terminal belongs and a domain to which a called terminal belongs subscribe a key distribution protocol; generating a key based on encryption capability information obtained in a calling process, and distributing the generated key to the calling terminal and the called terminal, if the protocol has been subscribed; generating a key based on encryption capability information obtained in a calling process, and distributing the generated key to the terminal at the same side as the security management server, if the protocol has not been subscribed. By applying the disclosure, the key is generated by the security management server, so that complexity may be reduced for media stream key negotiation to facilitate promotion of media stream encryption service.
    • 提供了一种用于分发媒体流密钥的方法和系统。 该方法包括:由安全管理服务器确定主叫终端所属的域和被叫终端所属的域是否签发密钥分发协议; 基于在呼叫处理中获得的加密能力信息生成密钥,并且如果协议已被订阅,则将生成的密钥分发给主叫终端和被叫终端; 基于在呼叫处理中获得的加密能力信息生成密钥,并且如果协议没有被订阅,则将生成的密钥分发到与安全管理服务器相同的一侧的终端。 通过应用本公开,密钥由安全管理服务器生成,从而可以减少媒体流密钥协商的复杂性,以促进媒体流加密服务的推广。
    • 59. 发明申请
    • System and method to support platform firmware as a trusted process
    • 支持平台固件作为受信任流程的系统和方法
    • US20050262571A1
    • 2005-11-24
    • US10786284
    • 2004-02-25
    • Vincent ZimmerWillard WisemanJing Li
    • Vincent ZimmerWillard WisemanJing Li
    • G06F21/00H04L9/00
    • G06F21/57
    • A system and method to support platform firmware as a trusted process. Measurement of a trusted portion of original firmware are measured by a core root of trust measurement (CRTM). The measurement is stored in a secure manner during pre-boot. During operating system (OS)-runtime, requests are made to access an unqualified current version of firmware corresponding to a secure execution mode. A portion of the current firmware analogous to the trusted portion is measured. The measurements of the trusted original portion and unqualified current portion are compared to verify they match. If they match, it indicates that the current portion and the trusted portion are one in the same. Thus, the current portion of firmware is trustworthy. Accordingly, the firmware may be executed as a trusted process. Embodiments employ locality to enforce the trusted process. The use of locality prevents unqualified users (i.e., software) from accessing data stored by trusted firmware.
    • 将平台固件支持为可信过程的系统和方法。 原始固件的受信任部分的测量是通过信任测量(CRTM)的核心根来测量的。 在预引导期间,以安全的方式存储测量。 在操作系统(OS) - 运行时期间,请求访问对应于安全执行模式的不合格的当前版本的固件。 测量与可信部分类似的当前固件的一部分。 比较可信原始部分和不合格的当前部分的测量结果,以验证它们是否匹配。 如果它们匹配,则表示当前部分和可信部分是相同的。 因此,固件的当前部分是值得信赖的。 因此,固件可以作为可信过程来执行。 实施例采用本地来强制可信过程。 使用本地防止不合格用户(即,软件)访问由可信固件存储的数据。