1// base64.cpp - written and placed in the public domain by Wei Dai 2 3#include "pch.h" 4#include "base64.h" 5 6NAMESPACE_BEGIN(CryptoPP) 7 8static const byte s_vec[] = 9 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; 10static const byte s_padding = '='; 11 12void Base64Encoder::IsolatedInitialize(const NameValuePairs ¶meters) 13{ 14 bool insertLineBreaks = parameters.GetValueWithDefault(Name::InsertLineBreaks(), true); 15 int maxLineLength = parameters.GetIntValueWithDefault(Name::MaxLineLength(), 72); 16 17 const char *lineBreak = insertLineBreaks ? "\n" : ""; 18 19 m_filter->Initialize(CombinedNameValuePairs( 20 parameters, 21 MakeParameters(Name::EncodingLookupArray(), &s_vec[0], false) 22 (Name::PaddingByte(), s_padding) 23 (Name::GroupSize(), insertLineBreaks ? maxLineLength : 0) 24 (Name::Separator(), ConstByteArrayParameter(lineBreak)) 25 (Name::Terminator(), ConstByteArrayParameter(lineBreak)) 26 (Name::Log2Base(), 6, true))); 27} 28 29const int *Base64Decoder::GetDecodingLookupArray() 30{ 31 static bool s_initialized = false; 32 static int s_array[256]; 33 34 if (!s_initialized) 35 { 36 InitializeDecodingLookupArray(s_array, s_vec, 64, false); 37 s_initialized = true; 38 } 39 return s_array; 40} 41 42NAMESPACE_END 43