| Vadim Bendebury | 5679752 | 2015-05-20 10:32:25 -0700 | [diff] [blame] | 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 | } |