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TPM_20_E_KEY
TPM_20_E_KEY maps to TPM_RC_KEY. The key fields are incompatible with the selected use. This is not simply an unsupported algorithm: a TPM can support the algorithm yet reject this particular object template or key material for the requested operation.
What to compare
- Read the key public area and verify its object type, attributes, scheme, and key material against the operation.
- For symmetric material, confirm that key strength and algorithm properties are valid for the object instance.
- Keep this separate from
TPM_20_E_BINDING, which means the public and sensitive portions do not cryptographically describe the same object.
TCG TPM 2.0 Part 2: TPM_RC_KEY · tpm2_create object templates
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