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Make GF2_32 class member of RawIDA

pull/757/head
Jeffrey Walton 2018-12-03 08:32:22 -05:00
parent 0b1162aa34
commit 13f7bd7ffb
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GPG Key ID: B36AB348921B1838
2 changed files with 9 additions and 12 deletions
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15
ida.cpp
View File

@ -6,14 +6,9 @@
#include "ida.h"
#include "stdcpp.h"
#include "algebra.h"
#include "gf2_32.h"
#include "polynomi.h"
#include "polynomi.cpp"
ANONYMOUS_NAMESPACE_BEGIN
const CryptoPP::GF2_32 field;
NAMESPACE_END
NAMESPACE_BEGIN(CryptoPP)
#if (defined(_MSC_VER) && (_MSC_VER < 1400)) && !defined(__MWERKS__)
@ -145,7 +140,7 @@ void RawIDA::ComputeV(unsigned int i)
if (m_outputToInput[i] == size_t(m_threshold) && i * size_t(m_threshold) <= 1000*1000)
{
m_v[i].resize(m_threshold);
PrepareBulkPolynomialInterpolationAt(field, m_v[i].begin(), m_outputChannelIds[i], &(m_inputChannelIds[0]), m_w.begin(), m_threshold);
PrepareBulkPolynomialInterpolationAt(m_gf32, m_v[i].begin(), m_outputChannelIds[i], &(m_inputChannelIds[0]), m_w.begin(), m_threshold);
}
}
@ -161,7 +156,7 @@ void RawIDA::AddOutputChannel(word32 channelId)
void RawIDA::PrepareInterpolation()
{
CRYPTOPP_ASSERT(m_inputChannelIds.size() == size_t(m_threshold));
PrepareBulkPolynomialInterpolation(field, m_w.begin(), &(m_inputChannelIds[0]), (unsigned int)(m_threshold));
PrepareBulkPolynomialInterpolation(m_gf32, m_w.begin(), &(m_inputChannelIds[0]), (unsigned int)(m_threshold));
for (unsigned int i=0; i<m_outputChannelIds.size(); i++)
ComputeV(i);
}
@ -190,12 +185,12 @@ void RawIDA::ProcessInputQueues()
if (m_outputToInput[i] != size_t(m_threshold))
m_outputQueues[i].PutWord32(m_y[m_outputToInput[i]]);
else if (m_v[i].size() == size_t(m_threshold))
m_outputQueues[i].PutWord32(BulkPolynomialInterpolateAt(field, m_y.begin(), m_v[i].begin(), m_threshold));
m_outputQueues[i].PutWord32(BulkPolynomialInterpolateAt(m_gf32, m_y.begin(), m_v[i].begin(), m_threshold));
else
{
m_u.resize(m_threshold);
PrepareBulkPolynomialInterpolationAt(field, m_u.begin(), m_outputChannelIds[i], &(m_inputChannelIds[0]), m_w.begin(), m_threshold);
m_outputQueues[i].PutWord32(BulkPolynomialInterpolateAt(field, m_y.begin(), m_u.begin(), m_threshold));
PrepareBulkPolynomialInterpolationAt(m_gf32, m_u.begin(), m_outputChannelIds[i], &(m_inputChannelIds[0]), m_w.begin(), m_threshold);
m_outputQueues[i].PutWord32(BulkPolynomialInterpolateAt(m_gf32, m_y.begin(), m_u.begin(), m_threshold));
}
}
}

6
ida.h
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@ -11,6 +11,7 @@
#include "filters.h"
#include "channels.h"
#include "secblock.h"
#include "gf2_32.h"
#include "stdcpp.h"
#include "misc.h"
@ -56,10 +57,11 @@ protected:
std::vector<word32> m_inputChannelIds, m_outputChannelIds, m_outputToInput;
std::vector<std::string> m_outputChannelIdStrings;
std::vector<ByteQueue> m_outputQueues;
int m_threshold;
unsigned int m_channelsReady, m_channelsFinished;
std::vector<SecBlock<word32> > m_v;
SecBlock<word32> m_u, m_w, m_y;
const GF2_32 m_gf32;
unsigned int m_channelsReady, m_channelsFinished;
int m_threshold;
};
/// \brief Shamir's Secret Sharing Algorithm