base32.cpp
// base32.cpp - written and placed in the public domain by Frank Palazzolo, based on hex.cpp by Wei Dai
#include "pch.h"
#include "base32.h"
NAMESPACE_BEGIN(CryptoPP)
static const byte s_vecUpper[] = "ABCDEFGHIJKMNPQRSTUVWXYZ23456789";
static const byte s_vecLower[] = "abcdefghijkmnpqrstuvwxyz23456789";
void Base32Encoder::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(), 5, true)));
}
void Base32Decoder::IsolatedInitialize(const NameValuePairs &parameters)
{
BaseN_Decoder::IsolatedInitialize(CombinedNameValuePairs(
parameters,
MakeParameters(Name::DecodingLookupArray(), GetDefaultDecodingLookupArray(), false)(Name::Log2Base(), 5, true)));
}
const int *Base32Decoder::GetDefaultDecodingLookupArray()
{
static volatile bool s_initialized = false;
static int s_array[256];
if (!s_initialized)
{
InitializeDecodingLookupArray(s_array, s_vecUpper, 32, true);
s_initialized = true;
}
return s_array;
}
NAMESPACE_END
Base32Decoder::IsolatedInitialize
void IsolatedInitialize(const NameValuePairs &parameters)
Initialize or reinitialize this object, without signal propagation.
Definition: base32.cpp:19
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
BaseN_Decoder::IsolatedInitialize
void IsolatedInitialize(const NameValuePairs &parameters)
Initialize or reinitialize this object, without signal propagation.
Definition: basecode.cpp:115
CryptoPP
Crypto++ library namespace.
base32.h
Classes for Base32Encoder and Base32Decoder.
Base32Encoder::IsolatedInitialize
void IsolatedInitialize(const NameValuePairs &parameters)
Initialize or reinitialize this object, without signal propagation.
Definition: base32.cpp:11
CombinedNameValuePairs
Combines two sets of NameValuePairs.
Definition: algparam.h:135
NameValuePairs
Interface for retrieving values given their names.
Definition: cryptlib.h:277