You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
45 lines
1.1 KiB
45 lines
1.1 KiB
5 years ago
|
// hex.cpp - written and placed in the public domain by Wei Dai
|
||
|
|
||
|
#include "pch.h"
|
||
|
|
||
|
#ifndef CRYPTOPP_IMPORTS
|
||
|
|
||
|
#include "hex.h"
|
||
|
|
||
|
NAMESPACE_BEGIN(CryptoPP)
|
||
|
|
||
|
static const byte s_vecUpper[] = "0123456789ABCDEF";
|
||
|
static const byte s_vecLower[] = "0123456789abcdef";
|
||
|
|
||
|
void HexEncoder::IsolatedInitialize(const NameValuePairs ¶meters)
|
||
|
{
|
||
|
bool uppercase = parameters.GetValueWithDefault(Name::Uppercase(), true);
|
||
|
m_filter->Initialize(CombinedNameValuePairs(
|
||
|
parameters,
|
||
|
MakeParameters(Name::EncodingLookupArray(), uppercase ? &s_vecUpper[0] : &s_vecLower[0], false)(Name::Log2Base(), 4, true)));
|
||
|
}
|
||
|
|
||
|
void HexDecoder::IsolatedInitialize(const NameValuePairs ¶meters)
|
||
|
{
|
||
|
BaseN_Decoder::IsolatedInitialize(CombinedNameValuePairs(
|
||
|
parameters,
|
||
|
MakeParameters(Name::DecodingLookupArray(), GetDefaultDecodingLookupArray(), false)(Name::Log2Base(), 4, true)));
|
||
|
}
|
||
|
|
||
|
const int *HexDecoder::GetDefaultDecodingLookupArray()
|
||
|
{
|
||
|
static volatile bool s_initialized = false;
|
||
|
static int s_array[256];
|
||
|
|
||
|
if (!s_initialized)
|
||
|
{
|
||
|
InitializeDecodingLookupArray(s_array, s_vecUpper, 16, true);
|
||
|
s_initialized = true;
|
||
|
}
|
||
|
return s_array;
|
||
|
}
|
||
|
|
||
|
NAMESPACE_END
|
||
|
|
||
|
#endif
|