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 "CertifyCreation_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 not compatible with signHandle |
| 17 | // TPM_RC_TICKET creationTicket does not match objectHandle |
| 18 | // TPM_RC_VALUE digest generated for inScheme is greater or has larger size than the |
| 19 | // modulus of signHandle, or the buffer for the result in signature is too |
| 20 | // small (for an RSA key); invalid commit status (for an ECC key with a |
| 21 | // split scheme). |
| 22 | // |
| 23 | TPM_RC |
| 24 | TPM2_CertifyCreation( |
| 25 | CertifyCreation_In *in, // IN: input parameter list |
| 26 | CertifyCreation_Out *out // OUT: output parameter list |
| 27 | ) |
| 28 | { |
| 29 | TPM_RC result; |
| 30 | TPM2B_NAME name; |
| 31 | TPMT_TK_CREATION ticket; |
| 32 | TPMS_ATTEST certifyInfo; |
| 33 | |
| 34 | // Input Validation |
| 35 | |
| 36 | // CertifyCreation specific input validation |
| 37 | // Get certified object name |
ChromeOS Developer | e85c65b | 2015-07-10 10:12:43 -0700 | [diff] [blame] | 38 | name.t.size = ObjectGetName(in->objectHandle, &name.t.name); |
Vadim Bendebury | 5679752 | 2015-05-20 10:32:25 -0700 | [diff] [blame] | 39 | // Re-compute ticket |
| 40 | TicketComputeCreation(in->creationTicket.hierarchy, &name, |
| 41 | &in->creationHash, &ticket); |
| 42 | // Compare ticket |
| 43 | if(!Memory2BEqual(&ticket.digest.b, &in->creationTicket.digest.b)) |
| 44 | return TPM_RC_TICKET + RC_CertifyCreation_creationTicket; |
| 45 | |
| 46 | // Command Output |
| 47 | // Common fields |
| 48 | result = FillInAttestInfo(in->signHandle, &in->inScheme, &in->qualifyingData, |
| 49 | &certifyInfo); |
| 50 | if(result != TPM_RC_SUCCESS) |
| 51 | { |
| 52 | if(result == TPM_RC_KEY) |
| 53 | return TPM_RC_KEY + RC_CertifyCreation_signHandle; |
| 54 | else |
| 55 | return RcSafeAddToResult(result, RC_CertifyCreation_inScheme); |
| 56 | } |
| 57 | |
| 58 | // CertifyCreation specific fields |
| 59 | // Attestation type |
| 60 | certifyInfo.type = TPM_ST_ATTEST_CREATION; |
| 61 | certifyInfo.attested.creation.objectName = name; |
| 62 | |
| 63 | // Copy the creationHash |
| 64 | certifyInfo.attested.creation.creationHash = in->creationHash; |
| 65 | |
| 66 | // Sign attestation structure. A NULL signature will be returned if |
| 67 | // signHandle is TPM_RH_NULL. A TPM_RC_NV_UNAVAILABLE, TPM_RC_NV_RATE, |
| 68 | // TPM_RC_VALUE, TPM_RC_SCHEME or TPM_RC_ATTRIBUTES error may be returned at |
| 69 | // this point |
| 70 | result = SignAttestInfo(in->signHandle, |
| 71 | &in->inScheme, |
| 72 | &certifyInfo, |
| 73 | &in->qualifyingData, |
| 74 | &out->certifyInfo, |
| 75 | &out->signature); |
| 76 | |
| 77 | // TPM_RC_ATTRIBUTES cannot be returned here as FillInAttestInfo would already |
| 78 | // have returned TPM_RC_KEY |
| 79 | pAssert(result != TPM_RC_ATTRIBUTES); |
| 80 | |
| 81 | if(result != TPM_RC_SUCCESS) |
| 82 | return result; |
| 83 | |
| 84 | // orderly state should be cleared because of the reporting of clock info |
| 85 | // if signing happens |
| 86 | if(in->signHandle != TPM_RH_NULL) |
| 87 | g_clearOrderly = TRUE; |
| 88 | |
| 89 | return TPM_RC_SUCCESS; |
| 90 | } |