00001
00002
00003 #include "pch.h"
00004 #include "base32.h"
00005
00006 NAMESPACE_BEGIN(CryptoPP)
00007
00008 static const byte s_vecUpper[] = "ABCDEFGHIJKMNPQRSTUVWXYZ23456789";
00009 static const byte s_vecLower[] = "abcdefghijkmnpqrstuvwxyz23456789";
00010
00011 void Base32Encoder::IsolatedInitialize(const NameValuePairs ¶meters)
00012 {
00013 bool uppercase = parameters.GetValueWithDefault(Name::Uppercase(), true);
00014 m_filter->Initialize(CombinedNameValuePairs(
00015 parameters,
00016 MakeParameters(Name::EncodingLookupArray(), uppercase ? &s_vecUpper[0] : &s_vecLower[0], false)(Name::Log2Base(), 5, true)));
00017 }
00018
00019 void Base32Decoder::IsolatedInitialize(const NameValuePairs ¶meters)
00020 {
00021 BaseN_Decoder::Initialize(CombinedNameValuePairs(
00022 parameters,
00023 MakeParameters(Name::DecodingLookupArray(), GetDefaultDecodingLookupArray(), false)(Name::Log2Base(), 5, true)));
00024 }
00025
00026 const int *Base32Decoder::GetDefaultDecodingLookupArray()
00027 {
00028 static volatile bool s_initialized = false;
00029 static int s_array[256];
00030
00031 if (!s_initialized)
00032 {
00033 InitializeDecodingLookupArray(s_array, s_vecUpper, 32, true);
00034 s_initialized = true;
00035 }
00036 return s_array;
00037 }
00038
00039 NAMESPACE_END