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发表于 2020-7-10 19:12:31
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引用IMX6ULL参考手册中的内容
11.3.1 SNVS Overview
SNVS is a hardware device that includes a security state machine and security violation detection circuits that, together with High Assurance Boot software, determine whether the chip is currently in a secure state.
When the security state machine indicates a secure state, the SNVS allows use of special cryptographic keys to decrypt long-term secrets such as public/private keypairs, Digital Rights Management keys and proprietary software. When the SNVS detects a potential security violation, such as a tamper alert, the SNVS sends an interrupt to alert the Operating System of the event. The SNVS also includes a general purpose real-time counter.
直接机翻
SNVS是一种硬件设备,它包括安全状态机和安全侵犯检测电路,与高保证的引导软件一起,确定芯片当前是否处于安全状态。
当安全状态机指示安全状态时,SNVS允许使用特殊的加密密钥来解密长期机密,如公钥/私钥对、数字权限管理密钥和专有软件。当SNVS检测到一个潜在的安全违反,比如一个篡改警报,SNVS发送一个中断来提醒操作系统这个事件。SNVS还包括一个通用实时计数器。 |
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