45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
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// hex.cpp - written and placed in the public domain by Wei Dai
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#include "pch.h"
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#ifndef CRYPTOPP_IMPORTS
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#include "hex.h"
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NAMESPACE_BEGIN(CryptoPP)
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static const byte s_vecUpper[] = "0123456789ABCDEF";
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static const byte s_vecLower[] = "0123456789abcdef";
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void HexEncoder::IsolatedInitialize(const NameValuePairs ¶meters)
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{
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bool uppercase = parameters.GetValueWithDefault(Name::Uppercase(), true);
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m_filter->Initialize(CombinedNameValuePairs(
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parameters,
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MakeParameters(Name::EncodingLookupArray(), uppercase ? &s_vecUpper[0] : &s_vecLower[0], false)(Name::Log2Base(), 4, true)));
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}
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void HexDecoder::IsolatedInitialize(const NameValuePairs ¶meters)
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{
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BaseN_Decoder::IsolatedInitialize(CombinedNameValuePairs(
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parameters,
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MakeParameters(Name::DecodingLookupArray(), GetDefaultDecodingLookupArray(), false)(Name::Log2Base(), 4, true)));
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}
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const int *HexDecoder::GetDefaultDecodingLookupArray()
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{
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static volatile bool s_initialized = false;
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static int s_array[256];
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if (!s_initialized)
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{
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InitializeDecodingLookupArray(s_array, s_vecUpper, 16, true);
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s_initialized = true;
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}
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return s_array;
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}
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NAMESPACE_END
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#endif
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