1 /*
2  * Copyright 2020, 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 ANDROID_HARDWARE_IDENTITY_EIC_COMMON_H
18 #define ANDROID_HARDWARE_IDENTITY_EIC_COMMON_H
19 
20 // Feature version 202009:
21 //
22 //         CredentialKeys = [
23 //              bstr,   ; storageKey, a 128-bit AES key
24 //              bstr,   ; credentialPrivKey, the private key for credentialKey
25 //         ]
26 //
27 // Feature version 202101:
28 //
29 //         CredentialKeys = [
30 //              bstr,   ; storageKey, a 128-bit AES key
31 //              bstr,   ; credentialPrivKey, the private key for credentialKey
32 //              bstr    ; proofOfProvisioning SHA-256
33 //         ]
34 //
35 // where storageKey is 16 bytes, credentialPrivateKey is 32 bytes, and
36 // proofOfProvisioning SHA-256 is 32 bytes.
37 #define EIC_CREDENTIAL_KEYS_CBOR_SIZE_FEATURE_VERSION_202009 52
38 #define EIC_CREDENTIAL_KEYS_CBOR_SIZE_FEATURE_VERSION_202101 86
39 
40 #endif  // ANDROID_HARDWARE_IDENTITY_EIC_COMMON_H
41