00001
00002
00003 #include "pch.h"
00004 #include "base64.h"
00005
00006 NAMESPACE_BEGIN(CryptoPP)
00007
00008 static const byte s_vec[] =
00009 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
00010 static const byte s_padding = '=';
00011
00012 void Base64Encoder::IsolatedInitialize(const NameValuePairs ¶meters)
00013 {
00014 bool insertLineBreaks = parameters.GetValueWithDefault(Name::InsertLineBreaks(), true);
00015 int maxLineLength = parameters.GetIntValueWithDefault(Name::MaxLineLength(), 72);
00016
00017 const char *lineBreak = insertLineBreaks ? "\n" : "";
00018
00019 m_filter->Initialize(CombinedNameValuePairs(
00020 parameters,
00021 MakeParameters(Name::EncodingLookupArray(), &s_vec[0], false)
00022 (Name::PaddingByte(), s_padding)
00023 (Name::GroupSize(), insertLineBreaks ? maxLineLength : 0)
00024 (Name::Separator(), ConstByteArrayParameter(lineBreak))
00025 (Name::Terminator(), ConstByteArrayParameter(lineBreak))
00026 (Name::Log2Base(), 6, true)));
00027 }
00028
00029 const int *Base64Decoder::GetDecodingLookupArray()
00030 {
00031 static volatile bool s_initialized = false;
00032 static int s_array[256];
00033
00034 if (!s_initialized)
00035 {
00036 InitializeDecodingLookupArray(s_array, s_vec, 64, false);
00037 s_initialized = true;
00038 }
00039 return s_array;
00040 }
00041
00042 NAMESPACE_END