Add create primary key example #215
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…te with create and create primary.
anhu
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anhu
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JasonMac219
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| #ifndef WOLFTPM_WINAPI | ||
| /* Move storage key into persistent NV */ | ||
| printf("Storing Primary key to handle 0x%08x\n", persistHandle); | ||
| rc = wolfTPM2_NVStoreKey(&dev, hierarchy, &primary, |
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Could the primary key be stored as persistent?
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Could the primary key be stored as persistent?
Hi @JasonMac219 , on TPM's where the internal NV is available it is possible. On platforms like Windows TBS there is no way to store the primary key. You would need to recreate it using the same template and unique at startup which will create the same primary key, since it uses the same seed. Once it is created a temporary (memory based) handle is returned, which you can use until next reboot.
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Confirmed the "unique" string is used for the primary key derivation from seed.
The primary key must be recreated on Windows TBS as it cannot be persisted to NV. The public template (including unique value) is used for the KDF based on hierarchy seed.