// This finds the final sums of iR[i]
private int findSumiRi() {
int[] sum = new int[29];
int length = 28;
// Find iRi
int[] iR = new int[29];
for (int i = 0; i < 29; i++) iR[i] = M.myMod((i * R[i]), 29);
// System.out.print("iRi: ");
// for(int i = 0; i < 29; i++)
// System.out.print(iR[i] + " ");
// System.out.println();
for (int i = 0; i < 29; i++) sum[i] = iR[i];
for (int j = 0; j < 28; j++) {
for (int i = 0; i < length; i++) {
sum[i] = sum[i + 1] - sum[i];
sum[i] = M.myMod(sum[i], 29);
// System.out.print(sum[i] + " ");
}
length = length - 1;
// System.out.println();
}
return sum[0];
}
// Main method just calls various functions and prints messages
public static void main(String[] args) throws IOException {
M.getFileInput();
M.processAllBlocks();
M.writeFile();
M.checkForError();
System.out.println("\nRecieved Message: " + message);
System.out.println("Decoded Message: " + decodedMessage);
}
// This finds the final sums of EiRi[] and stores it in RiEiLeading[]
private void findSums(int[] myArray) // This is for RiEi
{
int[] sum = myArray;
int length = 28;
/*
* System.out.print("Ri: "); // Delete Later for(int i = 0; i < 29; i++)
* System.out.print(R[i] + ", "); System.out.println();
*
* System.out.print("Ei: "); // Delete Later for(int i = 0; i < 29; i++)
* System.out.print(Ei[i] + ", "); System.out.println("\n");
*
* System.out.print("RiEi: "); for(int i = 0; i < 29; i++)
* System.out.print(myArray[i] + ", "); System.out.println();
*/
RiEiLeading[0] = myArray[0];
for (int j = 0; j < 28; j++) {
for (int i = 0; i < length; i++) {
sum[i] = sum[i + 1] - sum[i];
sum[i] = M.myMod(sum[i], 29);
// System.out.print(sum[i] + " ");
}
RiEiLeading[j + 1] = sum[0];
length--;
}
}
private void findRiandEiandEiRi() {
// FIND EI AND RIEI
for (int j = 0; j < 29; j++) {
Ei[j] = (j + (alpha + 29)) % 29;
RiEi[j] = (Ei[j] * R[j]) % 29;
}
// FIND LEADING COEFFECIENTs FOR ALL SUMS OF RIEI
M.findSums(RiEi);
}
// For each block, this finds E(t), Q(t), P(t)
private void processAllBlocks() {
for (int i = 0; i < message.length() / 29; i++) {
System.out.print("\nFor block #" + i);
M.convert();
M.getRiAndiRi(i);
M.findAlpha(i);
M.findRiandEiandEiRi();
M.alterCArray();
M.buildQ();
M.buildP();
M.printP();
start = start + 29;
// RESET EVERYTHING
Q = new int[28];
P = new int[27];
R = new int[29];
}
}
// This finds the final sums of R[i]
private int findSumRi() {
int[] sum = new int[29];
int length = 28;
for (int i = 0; i < 29; i++) sum[i] = R[i];
// System.out.print("Ri: ");
// for(int i = 0; i < 29; i++)
// System.out.print(R[i] + " "); // WAS System.out.print(R[i + start] +
// " ");
System.out.println();
for (int j = 0; j < 28; j++) {
for (int i = 0; i < length; i++) {
sum[i] = sum[i + 1] - sum[i];
sum[i] = M.myMod(sum[i], 29);
// System.out.print(sum[i] + " ");
}
length = length - 1;
// System.out.println();
}
return sum[0];
}
// This multiplies each leading sum of RiEi with each of the corresponding
// C_K value and stores it in alteredCArrays
private void alterCArray() {
for (int k = 0; k < 28; k++) alteredCArrays[k] = M.multiplyArray(RiEiLeading[k], cArrays[k]);
}
// This calls the other methods to get the finalSums of Ri and iRi
private void getRiAndiRi(int i) {
finalSumRi[i] = M.findSumRi();
finalSumiRi[i] = M.findSumiRi();
}