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TPM_20_E_SIZE
TPM_20_E_SIZE maps to TPM_RC_SIZE. The structure was decoded far enough for the TPM to determine that its size is wrong for the required type. It differs from TPM_20_E_INSUFFICIENT, where the buffer ends before a value can be unmarshaled at all.
Useful checks
- Recalculate every
TPM2B_*length from the serialized payload, using the TPM wire-format byte order. - Confirm that the selected union member and algorithm imply the same digest, key, or point length as the supplied data.
- For policy inputs, ensure that a digest has the size required by the policy session hash algorithm.
TCG TPM 2.0 Part 2: typed structures and TPM_RC_SIZE · TCG TPM 2.0 Part 3: command validation rules
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