Capabilities
This section briefly describes the capabilities that implement the above functions. The formal definition of these capabilities can be found in the latest TCPA specification. The capability names used in this section are exactly those used in the TCPA specification.
Digital Signatures
TCPA provides a single TPM capability and TSS function for digital signature generation and verification respectively:
TPM_Sign
This capability is used to sign using a loaded key. The signing key must be of type TPM_KEY_SIGNING, or TPM_KEY_LEGACY.
The capability requires authorization to use the TPM signing key, the TPM handle for this signing key, and the digest value to be signed.
The command causes a TPM to verify the authorization for using the ...
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