CommonCryptoDERUtilities.h   [plain text]


/*
 * Copyright (C) 2017 Apple Inc. All rights reserved.
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#pragma once

#include <wtf/Vector.h>

#if ENABLE(WEB_CRYPTO)

// FIXME: <rdar://problem/31618371>
// The following constants and functions are for customized DER implementations.
// They are not intended to be used outside Crypto codes, and should be removed
// once the above bug is fixed.
namespace WebCore {

// Per X.690 08/2015: https://www.itu.int/rec/T-REC-X.680-X.693/en
static const unsigned char BitStringMark = 0x03;
static const unsigned char IntegerMark = 0x02;
static const unsigned char OctetStringMark = 0x04;
static const unsigned char SequenceMark = 0x30;
// Version 0. Per https://tools.ietf.org/html/rfc5208#section-5
static const unsigned char Version[] = {0x02, 0x01, 0x00};

static const unsigned char InitialOctet = 0x00;
static const size_t MaxLengthInOneByte = 128;

size_t bytesUsedToEncodedLength(uint8_t);
size_t extraBytesNeededForEncodedLength(size_t);
void addEncodedASN1Length(Vector<uint8_t>&, size_t);
size_t bytesNeededForEncodedLength(size_t);

} // namespace WebCore

#endif // ENABLE(WEB_CRYPTO)