1 // This file was extracted from the TCG Published 2 // Trusted Platform Module Library 3 // Part 3: Commands 4 // Family "2.0" 5 // Level 00 Revision 01.16 6 // October 30, 2014 7 8 #include "InternalRoutines.h" 9 #include "Attest_spt_fp.h" 10 #include "GetTime_fp.h" 11 // 12 // 13 // Error Returns Meaning 14 // 15 // TPM_RC_KEY key referenced by signHandle is not a signing key 16 // TPM_RC_SCHEME inScheme is incompatible with signHandle type; or both scheme and 17 // key's default scheme are empty; or scheme is empty while key's 18 // default scheme requires explicit input scheme (split signing); or non- 19 // empty default key scheme differs from scheme 20 // TPM_RC_VALUE digest generated for the given scheme is greater than the modulus of 21 // signHandle (for an RSA key); invalid commit status or failed to 22 // generate r value (for an ECC key) 23 // 24 TPM_RC 25 TPM2_GetTime( 26 GetTime_In *in, // IN: input parameter list 27 GetTime_Out *out // OUT: output parameter list 28 ) 29 { 30 TPM_RC result; 31 TPMS_ATTEST timeInfo; 32 33 // Command Output 34 35 // Filling in attest information 36 // Common fields 37 result = FillInAttestInfo(in->signHandle, 38 &in->inScheme, 39 &in->qualifyingData, 40 &timeInfo); 41 if(result != TPM_RC_SUCCESS) 42 { 43 if(result == TPM_RC_KEY) 44 return TPM_RC_KEY + RC_GetTime_signHandle; 45 else 46 return RcSafeAddToResult(result, RC_GetTime_inScheme); 47 } 48 49 // GetClock specific fields 50 // Attestation type 51 timeInfo.type = TPM_ST_ATTEST_TIME; 52 53 // current clock in plain text 54 timeInfo.attested.time.time.time = g_time; 55 TimeFillInfo(&timeInfo.attested.time.time.clockInfo); 56 57 // Firmware version in plain text 58 timeInfo.attested.time.firmwareVersion 59 = ((UINT64) gp.firmwareV1) << 32; 60 timeInfo.attested.time.firmwareVersion += gp.firmwareV2; 61 62 // Sign attestation structure. A NULL signature will be returned if 63 // signHandle is TPM_RH_NULL. A TPM_RC_NV_UNAVAILABLE, TPM_RC_NV_RATE, 64 // TPM_RC_VALUE, TPM_RC_SCHEME or TPM_RC_ATTRIBUTES error may be returned at 65 // this point 66 result = SignAttestInfo(in->signHandle, 67 &in->inScheme, 68 &timeInfo, 69 &in->qualifyingData, 70 &out->timeInfo, 71 &out->signature); 72 if(result != TPM_RC_SUCCESS) 73 return result; 74 75 // orderly state should be cleared because of the reporting of clock info 76 // if signing happens 77 if(in->signHandle != TPM_RH_NULL) 78 g_clearOrderly = TRUE; 79 80 return TPM_RC_SUCCESS; 81 } 82
