blob: 64acabc683257c2a6494cc628c66965cee5cbd4e
| 1 | /* |
| 2 | * Copyright 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef SYSTEM_KEYMASTER_ATTESTATION_RECORD_H_ |
| 18 | #define SYSTEM_KEYMASTER_ATTESTATION_RECORD_H_ |
| 19 | |
| 20 | #include <hardware/keymaster_defs.h> |
| 21 | |
| 22 | #include <keymaster/authorization_set.h> |
| 23 | |
| 24 | namespace keymaster { |
| 25 | |
| 26 | class KeymasterContext; |
| 27 | |
| 28 | /** |
| 29 | * The OID for Android attestation records. For the curious, it breaks down as follows: |
| 30 | * |
| 31 | * 1 = ISO |
| 32 | * 3 = org |
| 33 | * 6 = DoD (Huh? OIDs are weird.) |
| 34 | * 1 = IANA |
| 35 | * 4 = Private |
| 36 | * 1 = Enterprises |
| 37 | * 11129 = Google |
| 38 | * 2 = Google security |
| 39 | * 1 = certificate extension |
| 40 | * 17 = Android attestation extension. |
| 41 | */ |
| 42 | static const char kAttestionRecordOid[] = "1.3.6.1.4.1.11129.2.1.17"; |
| 43 | |
| 44 | keymaster_error_t build_attestation_record(const AuthorizationSet& attestation_params, |
| 45 | const AuthorizationSet& software_enforced, |
| 46 | const AuthorizationSet& tee_enforced, |
| 47 | const KeymasterContext& context, |
| 48 | UniquePtr<uint8_t[]>* asn1_key_desc, |
| 49 | size_t* asn1_key_desc_len); |
| 50 | |
| 51 | keymaster_error_t parse_attestation_record(const uint8_t* asn1_key_desc, size_t asn1_key_desc_len, |
| 52 | uint32_t* attestation_version, // |
| 53 | keymaster_security_level_t* attestation_security_level, |
| 54 | uint32_t* keymaster_version, |
| 55 | keymaster_security_level_t* keymaster_security_level, |
| 56 | keymaster_blob_t* attestation_challenge, |
| 57 | AuthorizationSet* software_enforced, |
| 58 | AuthorizationSet* tee_enforced, |
| 59 | keymaster_blob_t* unique_id); |
| 60 | } |
| 61 | |
| 62 | #endif // SYSTEM_KEYMASTER_ATTESTATION_RECORD_H_ |
| 63 |