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US07849315B2 Method for managing operability of on-chip debug capability 有权
管理片上调试功能的可操作性的方法

Method for managing operability of on-chip debug capability
Abstract:
A method for managing operability of an on-chip debug capability (24) in a product (26) configured to execute software (30) includes storing (74, 76) a debug public key (40) and an operational public key (44) in product memory (54). The software (30) with either a debug signature (82) or an operational signature (88) is saved (84) in the memory (56). When enablement indication is received, the debug signature (82) is validated (102) using the debug public key (40). The debug capability (24) is enabled upon validation of the signature (82) and the software (30) is allowed to execute. When disablement indication is received, the operational signature (88) is verified (112) using the operational public key (44). The on-chip debug capability (24) is disabled upon verification of the signature (88) and the software (30) is allowed to execute.
Abstract(Chinese):

一种用于管理被配置为执行软件（30）的产品（26）中的片上调试能力（24）的可操作性的方法，包括存储（74,76）调试公钥（40）和操作公钥（44） 在产品存储器（54）中。 具有调试签名（82）或操作签名（88）的软件（30）被保存（84）在存储器（56）中。 当接收到启用指示时，调试签名（82）使用调试公钥（40）进行验证（102）。 在验证签名（82）并允许软件（30）执行时启用调试功能（24）。 当接收到禁用指示时，使用操作公钥（44）验证（112）操作签名（88）。 验证签名（88）并允许软件（30）执行时，片上调试功能（24）被禁用。

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