earlyBootOnly

Early-boot-only restriction.

Corresponds to the Tag::EARLY_BOOT_ONLY authorization tag, which uses a tag ID value of 305.

ASN.1: earlyBootOnly [305] EXPLICIT NULL OPTIONAL. Present in key attestation versions 4, 100, 200, 300, 400.

Note: in this API, presence/absence of this field is represented by null vs non-null. See EarlyBootOnly.explicitTag.