hex.cpp
// 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 &parameters)
{
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 &parameters)
{
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
NameValuePairs::GetValueWithDefault
T GetValueWithDefault(const char *name, T defaultValue) const
Get a named value.
Definition: cryptlib.h:348
MakeParameters
AlgorithmParameters MakeParameters(const char *name, const T &value, bool throwIfNotUsed=true)
Create an object that implements NameValuePairs.
Definition: algparam.h:554
BaseN_Decoder::InitializeDecodingLookupArray
static void InitializeDecodingLookupArray(int *lookup, const byte *alphabet, unsigned int base, bool caseInsensitive)
Intializes BaseN lookup array.
Definition: basecode.cpp:178
hex.h
Classes for HexEncoder and HexDecoder.
HexDecoder::IsolatedInitialize
void IsolatedInitialize(const NameValuePairs &parameters)
Initialize or reinitialize this object, without signal propagation.
Definition: hex.cpp:22
BaseN_Decoder::IsolatedInitialize
void IsolatedInitialize(const NameValuePairs &parameters)
Initialize or reinitialize this object, without signal propagation.
Definition: basecode.cpp:115
CryptoPP
Crypto++ library namespace.
CombinedNameValuePairs
Combines two sets of NameValuePairs.
Definition: algparam.h:135
NameValuePairs
Interface for retrieving values given their names.
Definition: cryptlib.h:277
HexEncoder::IsolatedInitialize
void IsolatedInitialize(const NameValuePairs &parameters)
Initialize or reinitialize this object, without signal propagation.
Definition: hex.cpp:14