本文对应《A Practical Guide to TPM 2.0 — Using the Trusted Platform Module in the New Age of Security》的第8章第4节。
8.4 Nonpersistent Entities —— 非持久性实体
A nonpersistent entity never persists through power cycles. Although a nonpersistent
entity can be saved (see TPM2_ContextSave), a TPM cryptographic mechanism prevents
the saved context from being loaded after a power cycle, thus enforcing volatility.
This type of entity has several classes.
一个非久性实体从不存留过上电周期(更准确地说,不会存留过规范中提到的TPM复位,即重启;对于休眠唤醒或待机唤醒是能够存留的)。尽管一个非持久性实体可以被保存(参见TPM2_ContextSave),但是TPM密码机制阻止了保存的上下文在一个上电周期后被加载,这样做加强了易失性。这种类型的实体有几个类别。
Authorization sessions, including HMAC and