File: CBORBinary.h

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// Copyright 2017 The Chromium Authors. All rights reserved.
// Copyright (C) 2018 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//    * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//    * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#pragma once

#if ENABLE(WEB_AUTHN)

#include <stdint.h>

namespace cbor {

namespace constants {

// Mask selecting the low-order 5 bits of the "initial byte", which is where
// the additional information is encoded.
static constexpr uint8_t kAdditionalInformationMask = 0x1F;
// Mask selecting the high-order 3 bits of the "initial byte", which indicates
// the major type of the encoded value.
static constexpr uint8_t kMajorTypeMask = 0xE0;
// Indicates the number of bits the "initial byte" needs to be shifted to the
// right after applying |kMajorTypeMask| to produce the major type in the
// lowermost bits.
static constexpr uint8_t kMajorTypeBitShift = 5u;
// Indicates the integer is in the following byte.
static constexpr uint8_t kAdditionalInformation1Byte = 24u;
// Indicates the integer is in the next 2 bytes.
static constexpr uint8_t kAdditionalInformation2Bytes = 25u;
// Indicates the integer is in the next 4 bytes.
static constexpr uint8_t kAdditionalInformation4Bytes = 26u;
// Indicates the integer is in the next 8 bytes.
static constexpr uint8_t kAdditionalInformation8Bytes = 27u;

} // namespace constants

} // namespace cbor

#endif // ENABLE(WEB_AUTHN)