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/*
* Copyright 2020, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#if !defined(EIC_INSIDE_LIBEIC_H) && !defined(EIC_COMPILATION)
#error "Never include this file directly, include libeic.h instead."
#endif
#ifndef ANDROID_HARDWARE_IDENTITY_EIC_COMMON_H
#define ANDROID_HARDWARE_IDENTITY_EIC_COMMON_H
// KeyMint auth-challenges are 64-bit numbers and 0 typically means unset.
#define EIC_KM_AUTH_CHALLENGE_UNSET 0
// Feature version 202009:
//
// CredentialKeys = [
// bstr, ; storageKey, a 128-bit AES key
// bstr, ; credentialPrivKey, the private key for credentialKey
// ]
//
// Feature version 202101:
//
// CredentialKeys = [
// bstr, ; storageKey, a 128-bit AES key
// bstr, ; credentialPrivKey, the private key for credentialKey
// bstr ; proofOfProvisioning SHA-256
// ]
//
// where storageKey is 16 bytes, credentialPrivateKey is 32 bytes, and proofOfProvisioning
// SHA-256 is 32 bytes.
#define EIC_CREDENTIAL_KEYS_CBOR_SIZE_FEATURE_VERSION_202009 52
#define EIC_CREDENTIAL_KEYS_CBOR_SIZE_FEATURE_VERSION_202101 86
#endif // ANDROID_HARDWARE_IDENTITY_EIC_COMMON_H
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