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 "ActivateCredential_fp.h" |
| 10 | #include "Object_spt_fp.h" |
| 11 | // |
| 12 | // |
| 13 | // Error Returns Meaning |
| 14 | // |
| 15 | // TPM_RC_ATTRIBUTES keyHandle does not reference a decryption key |
| 16 | // TPM_RC_ECC_POINT secret is invalid (when keyHandle is an ECC key) |
| 17 | // TPM_RC_INSUFFICIENT secret is invalid (when keyHandle is an ECC key) |
| 18 | // TPM_RC_INTEGRITY credentialBlob fails integrity test |
| 19 | // TPM_RC_NO_RESULT secret is invalid (when keyHandle is an ECC key) |
| 20 | // TPM_RC_SIZE secret size is invalid or the credentialBlob does not unmarshal |
| 21 | // correctly |
| 22 | // TPM_RC_TYPE keyHandle does not reference an asymmetric key. |
| 23 | // TPM_RC_VALUE secret is invalid (when keyHandle is an RSA key) |
| 24 | // |
| 25 | TPM_RC |
| 26 | TPM2_ActivateCredential( |
| 27 | ActivateCredential_In *in, // IN: input parameter list |
| 28 | ActivateCredential_Out *out // OUT: output parameter list |
| 29 | ) |
| 30 | { |
| 31 | TPM_RC result = TPM_RC_SUCCESS; |
| 32 | OBJECT *object; // decrypt key |
| 33 | OBJECT *activateObject;// key associated with |
| 34 | // credential |
| 35 | TPM2B_DATA data; // credential data |
| 36 | |
| 37 | // Input Validation |
| 38 | |
| 39 | // Get decrypt key pointer |
| 40 | object = ObjectGet(in->keyHandle); |
| 41 | |
| 42 | // Get certificated object pointer |
| 43 | activateObject = ObjectGet(in->activateHandle); |
| 44 | |
| 45 | // input decrypt key must be an asymmetric, restricted decryption key |
| 46 | if( !CryptIsAsymAlgorithm(object->publicArea.type) |
| 47 | || object->publicArea.objectAttributes.decrypt == CLEAR |
| 48 | || object->publicArea.objectAttributes.restricted == CLEAR) |
| 49 | return TPM_RC_TYPE + RC_ActivateCredential_keyHandle; |
| 50 | |
| 51 | // Command output |
| 52 | |
| 53 | // Decrypt input credential data via asymmetric decryption. A |
| 54 | // TPM_RC_VALUE, TPM_RC_KEY or unmarshal errors may be returned at this |
| 55 | // point |
| 56 | result = CryptSecretDecrypt(in->keyHandle, NULL, |
| 57 | "IDENTITY", &in->secret, &data); |
| 58 | if(result != TPM_RC_SUCCESS) |
| 59 | { |
| 60 | if(result == TPM_RC_KEY) |
| 61 | return TPM_RC_FAILURE; |
| 62 | return RcSafeAddToResult(result, RC_ActivateCredential_secret); |
| 63 | } |
| 64 | |
| 65 | // Retrieve secret data. A TPM_RC_INTEGRITY error or unmarshal |
| 66 | // errors may be returned at this point |
| 67 | result = CredentialToSecret(&in->credentialBlob, |
| 68 | &activateObject->name, |
| 69 | (TPM2B_SEED *) &data, |
| 70 | in->keyHandle, |
| 71 | &out->certInfo); |
| 72 | if(result != TPM_RC_SUCCESS) |
| 73 | return RcSafeAddToResult(result,RC_ActivateCredential_credentialBlob); |
| 74 | |
| 75 | return TPM_RC_SUCCESS; |
| 76 | } |