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TPM_20_E_TICKET
TPM_20_E_TICKET maps to TPM_RC_TICKET. A TPM ticket is evidence created for particular TPM-managed data and context; it is not a generic signature or a reusable token. For TPM2_CertifyCreation, the specification compares the supplied creation ticket with one recomputed from the object Name and creation hash.
What to preserve
- Keep the creation hash, object Name, hierarchy, ticket type, and ticket bytes together as one artifact.
- Do not mix a ticket from one object, digest, or TPM reset context with another request.
- For signing, verify that the validation ticket type and hash algorithm match the signature workflow.
TCG TPM 2.0 Part 2: TPM_RC_TICKET · TCG TPM 2.0 Part 3: CertifyCreation and ticket validation
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