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Infinite-OTP.cpp
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Infinite-OTP.cpp
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#include <assert.h>
#include <chrono>
#include <cstdint>
#include <iomanip>
#include <iostream>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <vector>
using namespace std;
constexpr uint32_t k1 = 1024;
constexpr uint32_t k4 = 4*k1;
constexpr uint32_t k32 = 32*k1;
constexpr uint32_t k64 = 64*k1;
constexpr uint32_t elementsIn1024b = k1 / (sizeof(uint8_t) * 8);
vector<uint32_t> rearrangementTable;
vector<uint16_t> superRearrangementTable;
vector<uint16_t> reverseSuperRearrangementTable;
void initializeRearrangementTable();
uint32_t getNewIndex(uint32_t j);
void initializeSuperRearrangementTable();
uint16_t getSuperIndex(uint16_t j, uint16_t i);
vector<uint8_t> extendedKey(vector<uint8_t> PUK);
static constexpr bool CHECKASSERT = false;
/**
* Used to disable/enable asserts based on the value of CHECKASSERT
*/
#define DASSERT(cond) if (CHECKASSERT) { assert(cond); }
string convertDurationToString(chrono::duration<double, nano> nanoSeconds) {
uint64_t timeDuration = nanoSeconds.count();
if (timeDuration > 100000 && timeDuration < 100000*1000UL) {
return to_string(chrono::duration_cast<chrono::microseconds>(nanoSeconds).count()) + " microSeconds";
}
if (timeDuration > 100000*1000UL && timeDuration < uint64_t(100000*1000*1000UL)) {
return to_string(chrono::duration_cast<chrono::milliseconds>(nanoSeconds).count()) + " milliSeconds";
}
if (timeDuration > uint64_t(100000UL*1000*1000) && timeDuration < uint64_t(100000UL*1000*1000*60)) {
return to_string(chrono::duration_cast<chrono::seconds>(nanoSeconds).count()) + " seconds";
}
if (timeDuration > uint64_t(100000UL*1000*1000*60)) {
return to_string(chrono::duration_cast<chrono::minutes>(nanoSeconds).count()) + " minutes";
}
return to_string(chrono::duration_cast<chrono::nanoseconds>(nanoSeconds).count()) + " nanoSeconds";
}
class Timer {
chrono::high_resolution_clock::time_point startTime;
chrono::high_resolution_clock::time_point endTime;
chrono::duration<double, nano> duration;
chrono::duration<double, nano>& encryptionDuration;
const string desc;
public:
Timer(const string& desc, chrono::duration<double, nano>& encryptionDuration) : desc(desc), encryptionDuration(encryptionDuration) {
startTime = chrono::high_resolution_clock::now();
}
~Timer() {
endTime = chrono::high_resolution_clock::now();
duration = chrono::duration_cast<chrono::duration<double, nano>>(endTime - startTime);
encryptionDuration += duration;
cout << desc << convertDurationToString(duration) << endl;
}
};
vector<uint64_t> substitutionTable;
void initSubstitutionTable() {
substitutionTable.resize(k64);
for(uint32_t i = 0; i < k64 / 2; ++i) {
// TODO Replace this with Galois field multiplication
substitutionTable[i] = uint16_t(i + (k64 / 2));
substitutionTable[i + (k64 / 2)] = uint16_t(i);
}
}
vector<vector<uint16_t>> OTPs;
uint32_t sectionCount = k64;
uint32_t sectionSize = 64 / sizeof(uint16_t); // The size of each OTP section is only 64 bytes.
void initOTPsections() {
OTPs.resize(sectionCount);
srand(0);
for (uint32_t i = 0; i < sectionCount; ++i) {
OTPs[i].resize(sectionSize);
for (uint32_t j = 0; j < sectionSize; ++j) {
OTPs[i][j] = rand();
}
}
}
inline void apply(vector<uint8_t>& input, vector<uint8_t>& EPUK, uint32_t index1, uint32_t index2, uint32_t OTPind1, uint32_t OTPind2) {
uint64_t* pointer1 = reinterpret_cast<uint64_t*>(input.data() + index1);
uint64_t* pointer2 = reinterpret_cast<uint64_t*>(input.data() + index2);
uint64_t* EPUKpointer1 = reinterpret_cast<uint64_t*>(EPUK.data() + index1);
uint64_t* EPUKpointer2 = reinterpret_cast<uint64_t*>(EPUK.data() + index2);
for (uint32_t i = 0; i < sectionSize; ++i) {
uint64_t OTP1 = OTPs[OTPind1][i];
uint64_t OTP2 = OTPs[OTPind2][i];
*(pointer1 + i) = *(pointer1 + i) ^ OTP1 ^ *(EPUKpointer1 + i);
*(pointer2 + i) = *(pointer2 + i) ^ OTP2 ^ *(EPUKpointer2 + i);
}
}
void initialize() {
initOTPsections();
initSubstitutionTable();
initializeRearrangementTable();
initializeSuperRearrangementTable();
}
void printVector(vector<uint8_t>& input, uint32_t start, uint32_t end) {
cout << "Vector : ";
for (uint32_t i = start; i < end; ++i) {
uint8_t value = input[i];
cout << hex << setw(3) << (uint16_t)value << dec << " ";
}
cout << endl;
}
void rotateRight(vector<uint8_t>& input, int32_t startingInd, uint32_t rotateBetweenBits) {
uint32_t length = rotateBetweenBits / (sizeof(uint8_t) * 8); // Divide by 8 to convert into bytes and then sizeof(uint8_t)
uint8_t* pointer = reinterpret_cast<uint8_t*>(input.data());
pointer += startingInd * sizeof(uint8_t);
uint8_t lastByte = *(pointer+length-1);
memmove(pointer + 1, pointer, (rotateBetweenBits/8) - 1);
*pointer = lastByte;
}
void rotateLeft(vector<uint8_t>& input, int32_t startingInd, uint32_t rotateBetweenBits) {
uint32_t length = rotateBetweenBits / (sizeof(uint8_t) * 8);
uint8_t* pointer = reinterpret_cast<uint8_t*>(input.data());
pointer += startingInd * sizeof(uint8_t);
uint8_t firstByte = *pointer;
memmove(pointer, pointer + 1, (rotateBetweenBits/8) - 1);
*(pointer + length - 1) = firstByte;
}
// TODO: Take care of little-Endian/big-Endian
void reverseSubstitution(vector<uint8_t>& input, uint32_t start = 0, uint32_t end = 0, int numRounds = 4) {
if (end == 0) end = input.size();
DASSERT((end - start) == (k1 / (sizeof(uint8_t) * 8))); // input must be 1024 bits long
bool skipRotate;
bool skipRearrangement;
chrono::duration<double, nano> duration;
{
/****************************************************************
string str("Time to reverse substitute 128 byte portion ");
if (skipRotate) {
str += "without circular-xor, ";
} else {
str += "withcircular-xor, ";
}
if (skipRearrangement) {
str += " and without rearrangement ";
} else {
str += " and with rearrangement ";
}
Timer timer1(str, duration);
****************************************************************/
// Process 1st section of 128 bits
uint64_t* bptr1 = reinterpret_cast<uint64_t *>(input.data()+start);
uint16_t* sa1 = reinterpret_cast<uint16_t *>(bptr1);
uint16_t* sa2 = reinterpret_cast<uint16_t *>(bptr1)+1;
uint16_t* sa3 = reinterpret_cast<uint16_t *>(bptr1)+2;
uint16_t* sa4 = reinterpret_cast<uint16_t *>(bptr1)+3;
uint16_t va1 = *sa1;
uint16_t va2 = *sa2;
uint16_t va3 = *sa3;
uint16_t va4 = *sa4;
uint64_t* bptr2 = reinterpret_cast<uint64_t *>(input.data()+start+8);
uint16_t* sa5 = reinterpret_cast<uint16_t *>(bptr2);
uint16_t* sa6 = reinterpret_cast<uint16_t *>(bptr2)+1;
uint16_t* sa7 = reinterpret_cast<uint16_t *>(bptr2)+2;
uint16_t* sa8 = reinterpret_cast<uint16_t *>(bptr2)+3;
uint16_t va5 = *sa5;
uint16_t va6 = *sa6;
uint16_t va7 = *sa7;
uint16_t va8 = *sa8;
if (not skipRotate) {
va1 ^= va8; //Circular-xor across section
}
va8 ^= va7;
va7 ^= va6;
va6 ^= va5;
va5 ^= va4;
va4 ^= va3;
va3 ^= va2;
va2 ^= va1;
va1 = substitutionTable[va1];
va2 = substitutionTable[va2];
va3 = substitutionTable[va3];
va4 = substitutionTable[va4];
va5 = substitutionTable[va5];
va6 = substitutionTable[va6];
va7 = substitutionTable[va7];
va8 = substitutionTable[va8];
if (skipRearrangement) {
*sa1 = va1;
*sa2 = va2;
*sa3 = va3;
*sa4 = va4;
*sa5 = va5;
*sa6 = va6;
*sa7 = va7;
*sa8 = va8;
}
// Process 2nd section of 128 bits
uint64_t* bptr3 = reinterpret_cast<uint64_t *>(input.data()+start+16);
uint16_t* sb1 = reinterpret_cast<uint16_t *>(bptr3);
uint16_t* sb2 = reinterpret_cast<uint16_t *>(bptr3)+1;
uint16_t* sb3 = reinterpret_cast<uint16_t *>(bptr3)+2;
uint16_t* sb4 = reinterpret_cast<uint16_t *>(bptr3)+3;
uint16_t vb1 = *sb1;
uint16_t vb2 = *sb2;
uint16_t vb3 = *sb3;
uint16_t vb4 = *sb4;
uint64_t* bptr4 = reinterpret_cast<uint64_t *>(input.data()+start+24);
uint16_t* sb5 = reinterpret_cast<uint16_t *>(bptr4);
uint16_t* sb6 = reinterpret_cast<uint16_t *>(bptr4)+1;
uint16_t* sb7 = reinterpret_cast<uint16_t *>(bptr4)+2;
uint16_t* sb8 = reinterpret_cast<uint16_t *>(bptr4)+3;
uint16_t vb5 = *sb5;
uint16_t vb6 = *sb6;
uint16_t vb7 = *sb7;
uint16_t vb8 = *sb8;
if (not skipRotate) {
vb1 ^= vb8; //Circular-xor across section
}
vb8 ^= vb7;
vb7 ^= vb6;
vb6 ^= vb5;
vb5 ^= vb4;
vb4 ^= vb3;
vb3 ^= vb2;
vb2 ^= vb1;
vb1 = substitutionTable[vb1];
vb2 = substitutionTable[vb2];
vb3 = substitutionTable[vb3];
vb4 = substitutionTable[vb4];
vb5 = substitutionTable[vb5];
vb6 = substitutionTable[vb6];
vb7 = substitutionTable[vb7];
vb8 = substitutionTable[vb8];
if (skipRearrangement) {
*sb1 = vb1;
*sb2 = vb2;
*sb3 = vb3;
*sb4 = vb4;
*sb5 = vb5;
*sb6 = vb6;
*sb7 = vb7;
*sb8 = vb8;
}
// Process 3rd section of 128 bits
uint64_t* bptr5 = reinterpret_cast<uint64_t *>(input.data()+start+32);
uint16_t* sc1 = reinterpret_cast<uint16_t *>(bptr5);
uint16_t* sc2 = reinterpret_cast<uint16_t *>(bptr5)+1;
uint16_t* sc3 = reinterpret_cast<uint16_t *>(bptr5)+2;
uint16_t* sc4 = reinterpret_cast<uint16_t *>(bptr5)+3;
uint16_t vc1 = *sc1;
uint16_t vc2 = *sc2;
uint16_t vc3 = *sc3;
uint16_t vc4 = *sc4;
uint64_t* bptr6 = reinterpret_cast<uint64_t *>(input.data()+start+40);
uint16_t* sc5 = reinterpret_cast<uint16_t *>(bptr6);
uint16_t* sc6 = reinterpret_cast<uint16_t *>(bptr6)+1;
uint16_t* sc7 = reinterpret_cast<uint16_t *>(bptr6)+2;
uint16_t* sc8 = reinterpret_cast<uint16_t *>(bptr6)+3;
uint16_t vc5 = *sc5;
uint16_t vc6 = *sc6;
uint16_t vc7 = *sc7;
uint16_t vc8 = *sc8;
if (not skipRotate) {
vc1 ^= vc8; //Circular-xor across section
}
vc8 ^= vc7;
vc7 ^= vc6;
vc6 ^= vc5;
vc5 ^= vc4;
vc4 ^= vc3;
vc3 ^= vc2;
vc2 ^= vc1;
vc1 = substitutionTable[vc1];
vc2 = substitutionTable[vc2];
vc3 = substitutionTable[vc3];
vc4 = substitutionTable[vc4];
vc5 = substitutionTable[vc5];
vc6 = substitutionTable[vc6];
vc7 = substitutionTable[vc7];
vc8 = substitutionTable[vc8];
if (skipRearrangement) {
*sc1 = vc1;
*sc2 = vc2;
*sc3 = vc3;
*sc4 = vc4;
*sc5 = vc5;
*sc6 = vc6;
*sc7 = vc7;
*sc8 = vc8;
}
// Process 4th section of 128 bits
uint64_t* bptr7 = reinterpret_cast<uint64_t *>(input.data()+start+48);
uint16_t* sd1 = reinterpret_cast<uint16_t *>(bptr7);
uint16_t* sd2 = reinterpret_cast<uint16_t *>(bptr7)+1;
uint16_t* sd3 = reinterpret_cast<uint16_t *>(bptr7)+2;
uint16_t* sd4 = reinterpret_cast<uint16_t *>(bptr7)+3;
uint16_t vd1 = *sd1;
uint16_t vd2 = *sd2;
uint16_t vd3 = *sd3;
uint16_t vd4 = *sd4;
uint64_t* bptr8 = reinterpret_cast<uint64_t *>(input.data()+start+56);
uint16_t* sd5 = reinterpret_cast<uint16_t *>(bptr8);
uint16_t* sd6 = reinterpret_cast<uint16_t *>(bptr8)+1;
uint16_t* sd7 = reinterpret_cast<uint16_t *>(bptr8)+2;
uint16_t* sd8 = reinterpret_cast<uint16_t *>(bptr8)+3;
uint16_t vd5 = *sd5;
uint16_t vd6 = *sd6;
uint16_t vd7 = *sd7;
uint16_t vd8 = *sd8;
if (not skipRotate) {
vd1 ^= vd8; //Circular-xor across section
}
vd8 ^= vd7;
vd7 ^= vd6;
vd6 ^= vd5;
vd5 ^= vd4;
vd4 ^= vd3;
vd3 ^= vd2;
vd2 ^= vd1;
vd1 = substitutionTable[vd1];
vd2 = substitutionTable[vd2];
vd3 = substitutionTable[vd3];
vd4 = substitutionTable[vd4];
vd5 = substitutionTable[vd5];
vd6 = substitutionTable[vd6];
vd7 = substitutionTable[vd7];
vd8 = substitutionTable[vd8];
if (skipRearrangement) {
*sd1 = vd1;
*sd2 = vd2;
*sd3 = vd3;
*sd4 = vd4;
*sd5 = vd5;
*sd6 = vd6;
*sd7 = vd7;
*sd8 = vd8;
}
// Process 5th section of 128 bits
uint64_t* bptr9 = reinterpret_cast<uint64_t *>(input.data()+start+64);
uint16_t* se1 = reinterpret_cast<uint16_t *>(bptr9);
uint16_t* se2 = reinterpret_cast<uint16_t *>(bptr9)+1;
uint16_t* se3 = reinterpret_cast<uint16_t *>(bptr9)+2;
uint16_t* se4 = reinterpret_cast<uint16_t *>(bptr9)+3;
uint16_t ve1 = *se1;
uint16_t ve2 = *se2;
uint16_t ve3 = *se3;
uint16_t ve4 = *se4;
uint64_t* bptr10 = reinterpret_cast<uint64_t *>(input.data()+start+72);
uint16_t* se5 = reinterpret_cast<uint16_t *>(bptr10);
uint16_t* se6 = reinterpret_cast<uint16_t *>(bptr10)+1;
uint16_t* se7 = reinterpret_cast<uint16_t *>(bptr10)+2;
uint16_t* se8 = reinterpret_cast<uint16_t *>(bptr10)+3;
uint16_t ve5 = *se5;
uint16_t ve6 = *se6;
uint16_t ve7 = *se7;
uint16_t ve8 = *se8;
if (not skipRotate) {
ve1 ^= ve8; //Circular-xor across section
}
ve8 ^= ve7;
ve7 ^= ve6;
ve6 ^= ve5;
ve5 ^= ve4;
ve4 ^= ve3;
ve3 ^= ve2;
ve2 ^= ve1;
ve1 = substitutionTable[ve1];
ve2 = substitutionTable[ve2];
ve3 = substitutionTable[ve3];
ve4 = substitutionTable[ve4];
ve5 = substitutionTable[ve5];
ve6 = substitutionTable[ve6];
ve7 = substitutionTable[ve7];
ve8 = substitutionTable[ve8];
if (skipRearrangement) {
*se1 = ve1;
*se2 = ve2;
*se3 = ve3;
*se4 = ve4;
*se5 = ve5;
*se6 = ve6;
*se7 = ve7;
*se8 = ve8;
}
// Process 6th section of 128 bits
uint64_t* bptr11 = reinterpret_cast<uint64_t *>(input.data()+start+80);
uint16_t* sf1 = reinterpret_cast<uint16_t *>(bptr11);
uint16_t* sf2 = reinterpret_cast<uint16_t *>(bptr11)+1;
uint16_t* sf3 = reinterpret_cast<uint16_t *>(bptr11)+2;
uint16_t* sf4 = reinterpret_cast<uint16_t *>(bptr11)+3;
uint16_t vf1 = *sf1;
uint16_t vf2 = *sf2;
uint16_t vf3 = *sf3;
uint16_t vf4 = *sf4;
uint64_t* bptr12 = reinterpret_cast<uint64_t *>(input.data()+start+88);
uint16_t* sf5 = reinterpret_cast<uint16_t *>(bptr12);
uint16_t* sf6 = reinterpret_cast<uint16_t *>(bptr12)+1;
uint16_t* sf7 = reinterpret_cast<uint16_t *>(bptr12)+2;
uint16_t* sf8 = reinterpret_cast<uint16_t *>(bptr12)+3;
uint16_t vf5 = *sf5;
uint16_t vf6 = *sf6;
uint16_t vf7 = *sf7;
uint16_t vf8 = *sf8;
if (not skipRotate) {
vf1 ^= vf8; //Circular-xor across section
}
vf8 ^= vf7;
vf7 ^= vf6;
vf6 ^= vf5;
vf5 ^= vf4;
vf4 ^= vf3;
vf3 ^= vf2;
vf2 ^= vf1;
vf1 = substitutionTable[vf1];
vf2 = substitutionTable[vf2];
vf3 = substitutionTable[vf3];
vf4 = substitutionTable[vf4];
vf5 = substitutionTable[vf5];
vf6 = substitutionTable[vf6];
vf7 = substitutionTable[vf7];
vf8 = substitutionTable[vf8];
if (skipRearrangement) {
*sf1 = vf1;
*sf2 = vf2;
*sf3 = vf3;
*sf4 = vf4;
*sf5 = vf5;
*sf6 = vf6;
*sf7 = vf7;
*sf8 = vf8;
}
// Process 7th section of 128 bits
uint64_t* bptr13 = reinterpret_cast<uint64_t *>(input.data()+start+96);
uint16_t* sg1 = reinterpret_cast<uint16_t *>(bptr13);
uint16_t* sg2 = reinterpret_cast<uint16_t *>(bptr13)+1;
uint16_t* sg3 = reinterpret_cast<uint16_t *>(bptr13)+2;
uint16_t* sg4 = reinterpret_cast<uint16_t *>(bptr13)+3;
uint16_t vg1 = *sg1;
uint16_t vg2 = *sg2;
uint16_t vg3 = *sg3;
uint16_t vg4 = *sg4;
uint64_t* bptr14 = reinterpret_cast<uint64_t *>(input.data()+start+104);
uint16_t* sg5 = reinterpret_cast<uint16_t *>(bptr14);
uint16_t* sg6 = reinterpret_cast<uint16_t *>(bptr14)+1;
uint16_t* sg7 = reinterpret_cast<uint16_t *>(bptr14)+2;
uint16_t* sg8 = reinterpret_cast<uint16_t *>(bptr14)+3;
uint16_t vg5 = *sg5;
uint16_t vg6 = *sg6;
uint16_t vg7 = *sg7;
uint16_t vg8 = *sg8;
if (not skipRotate) {
vg1 ^= vg8; //Circular-xor across section
}
vg8 ^= vg7;
vg7 ^= vg6;
vg6 ^= vg5;
vg5 ^= vg4;
vg4 ^= vg3;
vg3 ^= vg2;
vg2 ^= vg1;
vg1 = substitutionTable[vg1];
vg2 = substitutionTable[vg2];
vg3 = substitutionTable[vg3];
vg4 = substitutionTable[vg4];
vg5 = substitutionTable[vg5];
vg6 = substitutionTable[vg6];
vg7 = substitutionTable[vg7];
vg8 = substitutionTable[vg8];
if (skipRearrangement) {
*sg1 = vg1;
*sg2 = vg2;
*sg3 = vg3;
*sg4 = vg4;
*sg5 = vg5;
*sg6 = vg6;
*sg7 = vg7;
*sg8 = vg8;
}
// Process 8th section of 128 bits
uint64_t* bptr15 = reinterpret_cast<uint64_t *>(input.data()+start+112);
uint16_t* sh1 = reinterpret_cast<uint16_t *>(bptr15);
uint16_t* sh2 = reinterpret_cast<uint16_t *>(bptr15)+1;
uint16_t* sh3 = reinterpret_cast<uint16_t *>(bptr15)+2;
uint16_t* sh4 = reinterpret_cast<uint16_t *>(bptr15)+3;
uint16_t vh1 = *sh1;
uint16_t vh2 = *sh2;
uint16_t vh3 = *sh3;
uint16_t vh4 = *sh4;
uint64_t* bptr16 = reinterpret_cast<uint64_t *>(input.data()+start+120);
uint16_t* sh5 = reinterpret_cast<uint16_t *>(bptr16);
uint16_t* sh6 = reinterpret_cast<uint16_t *>(bptr16)+1;
uint16_t* sh7 = reinterpret_cast<uint16_t *>(bptr16)+2;
uint16_t* sh8 = reinterpret_cast<uint16_t *>(bptr16)+3;
uint16_t vh5 = *sh5;
uint16_t vh6 = *sh6;
uint16_t vh7 = *sh7;
uint16_t vh8 = *sh8;
if (not skipRotate) {
vh1 ^= vh8; //Circular-xor across section
}
vh8 ^= vh7;
vh7 ^= vh6;
vh6 ^= vh5;
vh5 ^= vh4;
vh4 ^= vh3;
vh3 ^= vh2;
vh2 ^= vh1;
vh1 = substitutionTable[vh1];
vh2 = substitutionTable[vh2];
vh3 = substitutionTable[vh3];
vh4 = substitutionTable[vh4];
vh5 = substitutionTable[vh5];
vh6 = substitutionTable[vh6];
vh7 = substitutionTable[vh7];
vh8 = substitutionTable[vh8];
if (skipRearrangement) {
*sh1 = vh1;
*sh2 = vh2;
*sh3 = vh3;
*sh4 = vh4;
*sh5 = vh5;
*sh6 = vh6;
*sh7 = vh7;
*sh8 = vh8;
}
if (not skipRearrangement) {
}
}
}
void forwardSubstitution(vector<uint16_t>& input, uint32_t start = 0, uint32_t end = 0) {
}
void forwardSubstitution(vector<uint16_t>& input, uint32_t start = 0, uint32_t end = 0, int numRounds, vector<uint16_t>& EPUK, uint32_t& startOTPSectionCount) {
if (end == 0) end = input.size();
DASSERT((end - start) == (k1 / (sizeof(uint16_t) * 8))); // input must be 1024 bits long
DASSERT(numRounds == 2 || numRounds == 4);
// chrono::duration<double, nano> duration;
int round = 1;
{
// Process 1st section of 128 bits
uint64_t* bptr1 = reinterpret_cast<uint64_t *>(input.data()+start);
uint16_t* sa1 = reinterpret_cast<uint16_t *>(bptr1);
uint16_t* sa2 = reinterpret_cast<uint16_t *>(bptr1)+1;
uint16_t* sa3 = reinterpret_cast<uint16_t *>(bptr1)+2;
uint16_t* sa4 = reinterpret_cast<uint16_t *>(bptr1)+3;
uint16_t va1 = substitutionTable[*sa1];
uint16_t va2 = substitutionTable[*sa2];
uint16_t va3 = substitutionTable[*sa3];
uint16_t va4 = substitutionTable[*sa4];
va2 ^= va1;
va3 ^= va2;
va4 ^= va3;
uint16_t* sa5 = reinterpret_cast<uint16_t *>(bptr1)+4;
uint16_t* sa6 = reinterpret_cast<uint16_t *>(bptr1)+5;
uint16_t* sa7 = reinterpret_cast<uint16_t *>(bptr1)+6;
uint16_t* sa8 = reinterpret_cast<uint16_t *>(bptr1)+7;
uint16_t va5 = substitutionTable[*sa5];
uint16_t va6 = substitutionTable[*sa6];
uint16_t va7 = substitutionTable[*sa7];
uint16_t va8 = substitutionTable[*sa8];
va5 ^= va4;
va6 ^= va5;
va7 ^= va6;
va8 ^= va7;
va1 ^= va8; //Circular-xor across section
uint64_t* ukptr1 = reinterpret_cast<uint64_t *>(EPUK.data()+start);
#define EPUK_SHORT(a) *(reinterpret_cast<uint16_t *>(ukptr1)+a);
va1 ^= EPUK_SHORT(0) ^ OTPs[EPUK[startOTPSectionCount]][0];
va2 ^= EPUK_SHORT(1) ^ OTPs[EPUK[startOTPSectionCount]][1];
va3 ^= EPUK_SHORT(2) ^ OTPs[EPUK[startOTPSectionCount]][2];
va4 ^= EPUK_SHORT(3) ^ OTPs[EPUK[startOTPSectionCount]][3];
va5 ^= EPUK_SHORT(4) ^ OTPs[EPUK[startOTPSectionCount]][4];
va6 ^= EPUK_SHORT(5) ^ OTPs[EPUK[startOTPSectionCount]][5];
va7 ^= EPUK_SHORT(6) ^ OTPs[EPUK[startOTPSectionCount]][6];
va8 ^= EPUK_SHORT(7) ^ OTPs[EPUK[startOTPSectionCount]][7];
// Process 2nd section of 128 bits
uint16_t* sb1 = reinterpret_cast<uint16_t *>(bptr1)+8;
uint16_t* sb2 = reinterpret_cast<uint16_t *>(bptr1)+9;
uint16_t* sb3 = reinterpret_cast<uint16_t *>(bptr1)+10;
uint16_t* sb4 = reinterpret_cast<uint16_t *>(bptr1)+11;
uint16_t vb1 = substitutionTable[*sb1];
uint16_t vb2 = substitutionTable[*sb2];
uint16_t vb3 = substitutionTable[*sb3];
uint16_t vb4 = substitutionTable[*sb4];
vb2 ^= vb1;
vb3 ^= vb2;
vb4 ^= vb3;
uint16_t* sb5 = reinterpret_cast<uint16_t *>(bptr1)+12;
uint16_t* sb6 = reinterpret_cast<uint16_t *>(bptr1)+13;
uint16_t* sb7 = reinterpret_cast<uint16_t *>(bptr1)+14;
uint16_t* sb8 = reinterpret_cast<uint16_t *>(bptr1)+15;
uint16_t vb5 = substitutionTable[*sb5];
uint16_t vb6 = substitutionTable[*sb6];
uint16_t vb7 = substitutionTable[*sb7];
uint16_t vb8 = substitutionTable[*sb8];
vb5 ^= vb4;
vb6 ^= vb5;
vb7 ^= vb6;
vb8 ^= vb7;
vb1 ^= vb8; //Circular-xor across section
vb1 ^= EPUK_SHORT(8) ^ OTPs[EPUK[startOTPSectionCount]][8];
vb2 ^= EPUK_SHORT(9) ^ OTPs[EPUK[startOTPSectionCount]][9];
vb3 ^= EPUK_SHORT(10) ^ OTPs[EPUK[startOTPSectionCount]][10];
vb4 ^= EPUK_SHORT(11) ^ OTPs[EPUK[startOTPSectionCount]][11];
vb5 ^= EPUK_SHORT(12) ^ OTPs[EPUK[startOTPSectionCount]][12];
vb6 ^= EPUK_SHORT(13) ^ OTPs[EPUK[startOTPSectionCount]][13];
vb7 ^= EPUK_SHORT(14) ^ OTPs[EPUK[startOTPSectionCount]][14];
vb8 ^= EPUK_SHORT(15) ^ OTPs[EPUK[startOTPSectionCount]][15];
// Process 3rd section of 128 bits
uint64_t* bptr5 = reinterpret_cast<uint64_t *>(input.data()+start+32);
uint16_t* sc1 = reinterpret_cast<uint16_t *>(bptr5);
uint16_t* sc2 = reinterpret_cast<uint16_t *>(bptr5)+1;
uint16_t* sc3 = reinterpret_cast<uint16_t *>(bptr5)+2;
uint16_t* sc4 = reinterpret_cast<uint16_t *>(bptr5)+3;
uint16_t vc1 = substitutionTable[*sc1];
uint16_t vc2 = substitutionTable[*sc2];
uint16_t vc3 = substitutionTable[*sc3];
uint16_t vc4 = substitutionTable[*sc4];
vc2 ^= vc1;
vc3 ^= vc2;
vc4 ^= vc3;
uint64_t* bptr6 = reinterpret_cast<uint64_t *>(input.data()+start+40);
uint16_t* sc5 = reinterpret_cast<uint16_t *>(bptr6);
uint16_t* sc6 = reinterpret_cast<uint16_t *>(bptr6)+1;
uint16_t* sc7 = reinterpret_cast<uint16_t *>(bptr6)+2;
uint16_t* sc8 = reinterpret_cast<uint16_t *>(bptr6)+3;
uint16_t vc5 = substitutionTable[*sc5];
uint16_t vc6 = substitutionTable[*sc6];
uint16_t vc7 = substitutionTable[*sc7];
uint16_t vc8 = substitutionTable[*sc8];
vc5 ^= vc4;
vc6 ^= vc5;
vc7 ^= vc6;
vc8 ^= vc7;
vc1 ^= vc8; //Circular-xor across section
vc1 ^= EPUK_SHORT(16) ^ OTPs[EPUK[startOTPSectionCount]][16];
vc2 ^= EPUK_SHORT(17) ^ OTPs[EPUK[startOTPSectionCount]][17];
vc3 ^= EPUK_SHORT(18) ^ OTPs[EPUK[startOTPSectionCount]][18];
vc4 ^= EPUK_SHORT(19) ^ OTPs[EPUK[startOTPSectionCount]][19];
vc5 ^= EPUK_SHORT(20) ^ OTPs[EPUK[startOTPSectionCount]][20];
vc6 ^= EPUK_SHORT(21) ^ OTPs[EPUK[startOTPSectionCount]][21];
vc7 ^= EPUK_SHORT(22) ^ OTPs[EPUK[startOTPSectionCount]][22];
vc8 ^= EPUK_SHORT(23) ^ OTPs[EPUK[startOTPSectionCount]][23];
// Process 4rd section of 128 bits
uint64_t* bptr7 = reinterpret_cast<uint64_t *>(input.data()+start+48);
uint16_t* sd1 = reinterpret_cast<uint16_t *>(bptr7);
uint16_t* sd2 = reinterpret_cast<uint16_t *>(bptr7)+1;
uint16_t* sd3 = reinterpret_cast<uint16_t *>(bptr7)+2;
uint16_t* sd4 = reinterpret_cast<uint16_t *>(bptr7)+3;
uint16_t vd1 = substitutionTable[*sd1];
uint16_t vd2 = substitutionTable[*sd2];
uint16_t vd3 = substitutionTable[*sd3];
uint16_t vd4 = substitutionTable[*sd4];
vd2 ^= vd1;
vd3 ^= vd2;
vd4 ^= vd3;
uint64_t* bptr8 = reinterpret_cast<uint64_t *>(input.data()+start+56);
uint16_t* sd5 = reinterpret_cast<uint16_t *>(bptr8);
uint16_t* sd6 = reinterpret_cast<uint16_t *>(bptr8)+1;
uint16_t* sd7 = reinterpret_cast<uint16_t *>(bptr8)+2;
uint16_t* sd8 = reinterpret_cast<uint16_t *>(bptr8)+3;
uint16_t vd5 = substitutionTable[*sd5];
uint16_t vd6 = substitutionTable[*sd6];
uint16_t vd7 = substitutionTable[*sd7];
uint16_t vd8 = substitutionTable[*sd8];
vd5 ^= vd4;
vd6 ^= vd5;
vd7 ^= vd6;
vd8 ^= vd7;
vd1 ^= vd8; //Circular-xor across section
vd1 ^= EPUK_SHORT(24) ^ OTPs[EPUK[startOTPSectionCount]][24];
vd2 ^= EPUK_SHORT(25) ^ OTPs[EPUK[startOTPSectionCount]][25];
vd3 ^= EPUK_SHORT(26) ^ OTPs[EPUK[startOTPSectionCount]][26];
vd4 ^= EPUK_SHORT(27) ^ OTPs[EPUK[startOTPSectionCount]][27];
vd5 ^= EPUK_SHORT(28) ^ OTPs[EPUK[startOTPSectionCount]][28];
vd6 ^= EPUK_SHORT(29) ^ OTPs[EPUK[startOTPSectionCount]][29];
vd7 ^= EPUK_SHORT(30) ^ OTPs[EPUK[startOTPSectionCount]][30];
vd8 ^= EPUK_SHORT(31) ^ OTPs[EPUK[startOTPSectionCount]][31];
++startOTPSectionCount;
// Process 5th section of 128 bits
uint64_t* bptr9 = reinterpret_cast<uint64_t *>(input.data()+start+64);
uint16_t* se1 = reinterpret_cast<uint16_t *>(bptr9);
uint16_t* se2 = reinterpret_cast<uint16_t *>(bptr9)+1;
uint16_t* se3 = reinterpret_cast<uint16_t *>(bptr9)+2;
uint16_t* se4 = reinterpret_cast<uint16_t *>(bptr9)+3;
uint16_t ve1 = substitutionTable[*se1];
uint16_t ve2 = substitutionTable[*se2];
uint16_t ve3 = substitutionTable[*se3];
uint16_t ve4 = substitutionTable[*se4];
ve2 ^= ve1;
ve3 ^= ve2;
ve4 ^= ve3;
uint64_t* bptr10 = reinterpret_cast<uint64_t *>(input.data()+start+72);
uint16_t* se5 = reinterpret_cast<uint16_t *>(bptr10);
uint16_t* se6 = reinterpret_cast<uint16_t *>(bptr10)+1;
uint16_t* se7 = reinterpret_cast<uint16_t *>(bptr10)+2;
uint16_t* se8 = reinterpret_cast<uint16_t *>(bptr10)+3;
uint16_t ve5 = substitutionTable[*se5];
uint16_t ve6 = substitutionTable[*se6];
uint16_t ve7 = substitutionTable[*se7];
uint16_t ve8 = substitutionTable[*se8];
ve5 ^= ve4;
ve6 ^= ve5;
ve7 ^= ve6;
ve8 ^= ve7;
ve1 ^= ve8; //Circular-xor across section
ve1 ^= EPUK_SHORT(32) ^ OTPs[EPUK[startOTPSectionCount]][0];
ve2 ^= EPUK_SHORT(33) ^ OTPs[EPUK[startOTPSectionCount]][1];
ve3 ^= EPUK_SHORT(34) ^ OTPs[EPUK[startOTPSectionCount]][2];
ve4 ^= EPUK_SHORT(35) ^ OTPs[EPUK[startOTPSectionCount]][3];
ve5 ^= EPUK_SHORT(36) ^ OTPs[EPUK[startOTPSectionCount]][4];
ve6 ^= EPUK_SHORT(37) ^ OTPs[EPUK[startOTPSectionCount]][5];
ve7 ^= EPUK_SHORT(38) ^ OTPs[EPUK[startOTPSectionCount]][6];
ve8 ^= EPUK_SHORT(39) ^ OTPs[EPUK[startOTPSectionCount]][7];
// Process 6th section of 128 bits
uint64_t* bptr11= reinterpret_cast<uint64_t *>(input.data()+start+80);
uint16_t* sf1 = reinterpret_cast<uint16_t *>(bptr11);
uint16_t* sf2 = reinterpret_cast<uint16_t *>(bptr11)+1;
uint16_t* sf3 = reinterpret_cast<uint16_t *>(bptr11)+2;
uint16_t* sf4 = reinterpret_cast<uint16_t *>(bptr11)+3;
uint16_t vf1 = substitutionTable[*sf1];
uint16_t vf2 = substitutionTable[*sf2];
uint16_t vf3 = substitutionTable[*sf3];
uint16_t vf4 = substitutionTable[*sf4];
vf2 ^= vf1;
vf3 ^= vf2;
vf4 ^= vf3;
uint64_t* bptr12 = reinterpret_cast<uint64_t *>(input.data()+start+88);
uint16_t* sf5 = reinterpret_cast<uint16_t *>(bptr12);
uint16_t* sf6 = reinterpret_cast<uint16_t *>(bptr12)+1;
uint16_t* sf7 = reinterpret_cast<uint16_t *>(bptr12)+2;
uint16_t* sf8 = reinterpret_cast<uint16_t *>(bptr12)+3;
uint16_t vf5 = substitutionTable[*sf5];
uint16_t vf6 = substitutionTable[*sf6];
uint16_t vf7 = substitutionTable[*sf7];
uint16_t vf8 = substitutionTable[*sf8];
vf5 ^= vf4;
vf6 ^= vf5;
vf7 ^= vf6;
vf8 ^= vf7;
vf1 ^= vf8; //Circular-xor across section
vf1 ^= EPUK_SHORT(40) ^ OTPs[EPUK[startOTPSectionCount]][8];
vf2 ^= EPUK_SHORT(41) ^ OTPs[EPUK[startOTPSectionCount]][9];
vf3 ^= EPUK_SHORT(42) ^ OTPs[EPUK[startOTPSectionCount]][10];
vf4 ^= EPUK_SHORT(43) ^ OTPs[EPUK[startOTPSectionCount]][11];
vf5 ^= EPUK_SHORT(44) ^ OTPs[EPUK[startOTPSectionCount]][12];
vf6 ^= EPUK_SHORT(45) ^ OTPs[EPUK[startOTPSectionCount]][13];
vf7 ^= EPUK_SHORT(46) ^ OTPs[EPUK[startOTPSectionCount]][14];
vf8 ^= EPUK_SHORT(47) ^ OTPs[EPUK[startOTPSectionCount]][15];
// Process 7th section of 128 bits
uint64_t* bptr13= reinterpret_cast<uint64_t *>(input.data()+start+96);
uint16_t* sg1 = reinterpret_cast<uint16_t *>(bptr13);
uint16_t* sg2 = reinterpret_cast<uint16_t *>(bptr13)+1;
uint16_t* sg3 = reinterpret_cast<uint16_t *>(bptr13)+2;
uint16_t* sg4 = reinterpret_cast<uint16_t *>(bptr13)+3;
uint16_t vg1 = substitutionTable[*sg1];
uint16_t vg2 = substitutionTable[*sg2];
uint16_t vg3 = substitutionTable[*sg3];
uint16_t vg4 = substitutionTable[*sg4];
vg2 ^= vg1;
vg3 ^= vg2;
vg4 ^= vg3;
uint64_t* bptr14 = reinterpret_cast<uint64_t *>(input.data()+start+104);
uint16_t* sg5 = reinterpret_cast<uint16_t *>(bptr14);
uint16_t* sg6 = reinterpret_cast<uint16_t *>(bptr14)+1;
uint16_t* sg7 = reinterpret_cast<uint16_t *>(bptr14)+2;
uint16_t* sg8 = reinterpret_cast<uint16_t *>(bptr14)+3;
uint16_t vg5 = substitutionTable[*sg5];
uint16_t vg6 = substitutionTable[*sg6];
uint16_t vg7 = substitutionTable[*sg7];
uint16_t vg8 = substitutionTable[*sg8];
vg5 ^= vg4;
vg6 ^= vg5;
vg7 ^= vg6;
vg8 ^= vg7;
vg1 ^= vg8; //Circular-xor across section
vg1 ^= EPUK_SHORT(48) ^ OTPs[EPUK[startOTPSectionCount]][16];
vg2 ^= EPUK_SHORT(49) ^ OTPs[EPUK[startOTPSectionCount]][17];
vg3 ^= EPUK_SHORT(50) ^ OTPs[EPUK[startOTPSectionCount]][18];
vg4 ^= EPUK_SHORT(51) ^ OTPs[EPUK[startOTPSectionCount]][19];
vg5 ^= EPUK_SHORT(52) ^ OTPs[EPUK[startOTPSectionCount]][20];
vg6 ^= EPUK_SHORT(53) ^ OTPs[EPUK[startOTPSectionCount]][21];
vg7 ^= EPUK_SHORT(54) ^ OTPs[EPUK[startOTPSectionCount]][22];
vg8 ^= EPUK_SHORT(55) ^ OTPs[EPUK[startOTPSectionCount]][23];
// Process 8th section of 128 bits
uint64_t* bptr15= reinterpret_cast<uint64_t *>(input.data()+start+112);
uint16_t* sh1 = reinterpret_cast<uint16_t *>(bptr15);
uint16_t* sh2 = reinterpret_cast<uint16_t *>(bptr15)+1;
uint16_t* sh3 = reinterpret_cast<uint16_t *>(bptr15)+2;
uint16_t* sh4 = reinterpret_cast<uint16_t *>(bptr15)+3;
uint16_t vh1 = substitutionTable[*sh1];
uint16_t vh2 = substitutionTable[*sh2];
uint16_t vh3 = substitutionTable[*sh3];
uint16_t vh4 = substitutionTable[*sh4];
vh2 ^= vh1;
vh3 ^= vh2;
vh4 ^= vh3;
uint64_t* bptr16 = reinterpret_cast<uint64_t *>(input.data()+start+120);
uint16_t* sh5 = reinterpret_cast<uint16_t *>(bptr16);
uint16_t* sh6 = reinterpret_cast<uint16_t *>(bptr16)+1;
uint16_t* sh7 = reinterpret_cast<uint16_t *>(bptr16)+2;
uint16_t* sh8 = reinterpret_cast<uint16_t *>(bptr16)+3;
uint16_t vh5 = substitutionTable[*sh5];
uint16_t vh6 = substitutionTable[*sh6];
uint16_t vh7 = substitutionTable[*sh7];
uint16_t vh8 = substitutionTable[*sh8];
vh5 ^= vh4;
vh6 ^= vh5;
vh7 ^= vh6;
vh8 ^= vh7;
vh1 ^= vh8; //Circular-xor across section
vh1 ^= EPUK_SHORT(56) ^ OTPs[EPUK[startOTPSectionCount]][14];
vh2 ^= EPUK_SHORT(57) ^ OTPs[EPUK[startOTPSectionCount]][15];
vh3 ^= EPUK_SHORT(58) ^ OTPs[EPUK[startOTPSectionCount]][16];
vh4 ^= EPUK_SHORT(59) ^ OTPs[EPUK[startOTPSectionCount]][17];
vh5 ^= EPUK_SHORT(60) ^ OTPs[EPUK[startOTPSectionCount]][28];
vh6 ^= EPUK_SHORT(61) ^ OTPs[EPUK[startOTPSectionCount]][29];
vh7 ^= EPUK_SHORT(62) ^ OTPs[EPUK[startOTPSectionCount]][30];
vh8 ^= EPUK_SHORT(63) ^ OTPs[EPUK[startOTPSectionCount]][31];
++startOTPSectionCount;
for (int i = 0; i < 3; ++i) {
++round;
// Section 1
va1 = substitutionTable[va1];
va2 = substitutionTable[va2];
va3 = substitutionTable[va3];
va4 = substitutionTable[va4];
va2 ^= va1;
va3 ^= va2;
va4 ^= va3;
va5 = substitutionTable[va5];
va6 = substitutionTable[va6];
va7 = substitutionTable[va7];
va8 = substitutionTable[va8];