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    • 77. 发明公开
    • PRIVILEGED CRYPTOGRAPHIC SERVICES IN A VIRTUALIZED ENVIRONMENT
    • EINER VIRTUALISIERTEN UMGEBUNG特别荣誉
    • EP2949074A4
    • 2016-09-21
    • EP14743982
    • 2014-01-22
    • AMAZON TECH INC
    • ROTH GREGORY BRANCHEKPOTLAPALLY NACHIKETH RAO
    • G06F21/53G06F21/57G06F21/64G06F21/72
    • G06F21/72G06F21/53G06F21/57G06F21/575G06F21/602G06F21/64
    • A privileged cryptographic service is described, such as a service running in system management mode (SMM). The privileged service is operable to store and manage cryptographic keys and/or other security resources in a multitenant remote program execution environment. The privileged service can receive requests to use the cryptographic keys and issue responses to these requests. In addition, the privileged service can measure the hypervisor at runtime (e.g., either periodically or in response to the requests) in an attempt to detect evidence of tampering with the hypervisor. Because the privileged service is operating in system management mode that is more privileged than the hypervisor, the privileged service can be robust against virtual machine escape and other hypervisor attacks.
    • 描述了一种特权密码服务,例如以系统管理模式运行的服务(SMM)。 特权服务可操作以在多租户远程程序执行环境中存储和管理加密密钥和/或其他安全资源。 特权服务可以接收使用加密密钥的请求并发出对这些请求的响应。 此外,特权服务可以在运行时(例如,周期性地或响应于请求)来测量管理程序,以试图检测篡改管理程序的证据。 由于特权服务在比管理程序更具特权的系统管理模式下运行,因此特权服务可以针对虚拟机逃脱和其他管理程序攻击而强大。