// This file was extracted from the TCG Published

// Trusted Platform Module Library

// Part 3: Commands

// Family "2.0"

// Level 00 Revision 01.16

// October 30, 2014

#include "InternalRoutines.h"

#include "Attest_spt_fp.h"

#include "CertifyCreation_fp.h"

//

//

//     Error Returns               Meaning

//

//     TPM_RC_KEY                  key referenced by signHandle is not a signing key

//     TPM_RC_SCHEME               inScheme is not compatible with signHandle

//     TPM_RC_TICKET               creationTicket does not match objectHandle

//     TPM_RC_VALUE                digest generated for inScheme is greater or has larger size than the

//                                 modulus of signHandle, or the buffer for the result in signature is too

//                                 small (for an RSA key); invalid commit status (for an ECC key with a

//                                 split scheme).

//

TPM_RC

TPM2_CertifyCreation(

   CertifyCreation_In     *in,                // IN: input parameter list

   CertifyCreation_Out    *out                // OUT: output parameter list

   )

{

   TPM_RC                 result;

   TPM2B_NAME             name;

   TPMT_TK_CREATION       ticket;

   TPMS_ATTEST            certifyInfo;

// Input Validation

   // CertifyCreation specific input validation

   // Get certified object name

   name.t.size = ObjectGetName(in->objectHandle, &name.t.name);

   // Re-compute ticket

   TicketComputeCreation(in->creationTicket.hierarchy, &name,

                         &in->creationHash, &ticket);

   // Compare ticket

   if(!Memory2BEqual(&ticket.digest.b, &in->creationTicket.digest.b))

       return TPM_RC_TICKET + RC_CertifyCreation_creationTicket;

// Command Output

   // Common fields

   result = FillInAttestInfo(in->signHandle, &in->inScheme, &in->qualifyingData,

                             &certifyInfo);

   if(result != TPM_RC_SUCCESS)

   {

       if(result == TPM_RC_KEY)

           return TPM_RC_KEY + RC_CertifyCreation_signHandle;

       else

           return RcSafeAddToResult(result, RC_CertifyCreation_inScheme);

   }

   // CertifyCreation specific fields

   // Attestation type

   certifyInfo.type = TPM_ST_ATTEST_CREATION;

   certifyInfo.attested.creation.objectName = name;

   // Copy the creationHash

   certifyInfo.attested.creation.creationHash = in->creationHash;

   // Sign attestation structure.   A NULL signature will be returned if

   // signHandle is TPM_RH_NULL. A TPM_RC_NV_UNAVAILABLE, TPM_RC_NV_RATE,

   // TPM_RC_VALUE, TPM_RC_SCHEME or TPM_RC_ATTRIBUTES error may be returned at

   // this point

   result = SignAttestInfo(in->signHandle,

                           &in->inScheme,

                           &certifyInfo,

                           &in->qualifyingData,

                           &out->certifyInfo,

                           &out->signature);

   // TPM_RC_ATTRIBUTES cannot be returned here as FillInAttestInfo would already

   // have returned TPM_RC_KEY

   pAssert(result != TPM_RC_ATTRIBUTES);

   if(result != TPM_RC_SUCCESS)

       return result;

   // orderly state should be cleared because of the reporting of clock info

   // if signing happens

   if(in->signHandle != TPM_RH_NULL)

       g_clearOrderly = TRUE;

   return TPM_RC_SUCCESS;

}