tee/TlcKeymint/src/AndroidSecureClock.cpp

/*
 * Copyright (c) 2021 TRUSTONIC LIMITED
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#define LOG_TAG "android.hardware.security.secureclock-impl"
#include <log/log.h>

#include "AndroidSecureClock.h"

#include <aidl/android/hardware/security/keymint/ErrorCode.h>

namespace aidl::android::hardware::security::secureclock {

inline ScopedAStatus kmError2ScopedAStatus(const keymaster_error_t value) {
    return (value == KM_ERROR_OK
                ? ScopedAStatus::ok()
                : ScopedAStatus(AStatus_fromServiceSpecificError(static_cast<int32_t>(value))));
}

AndroidSecureClock::AndroidSecureClock(
    std::shared_ptr<keymint::AndroidKeyMintDevice> keymint)
    : impl_(keymint->getImpl()) {}

AndroidSecureClock::~AndroidSecureClock() {}

ScopedAStatus AndroidSecureClock::generateTimeStamp(int64_t challenge, TimeStampToken* token) {
    keymaster_timestamp_token_t local_token = {};
    local_token.challenge = challenge;
    keymaster_error_t ret = impl_->generate_timestamp(&local_token);
    if (ret != KM_ERROR_OK) {
        return kmError2ScopedAStatus(ret);
    }
    token->challenge = local_token.challenge;
    token->timestamp.milliSeconds = static_cast<int64_t>(local_token.timestamp);
    token->mac = vector<uint8_t>(local_token.mac, local_token.mac+32);
    return ScopedAStatus::ok();
}

}  // namespace aidl::android::hardware::security::secureclock