JavaDataStructures/ECC/Encoder.java at master · benaich/JavaDataStructures · GitHub

History

66 lines (59 loc) · 2.08 KB

Raw

package ECC;

import static ECC.Helpers.toBinary;

import java.math.BigInteger;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

public class Encoder {

private HashMap<Integer, Point> charTable;

public Encoder(HashMap<Integer, Point> charTable) {

this.charTable = charTable;

}

public Matrix encode(String plainText) {

Matrix mMatrix = createMatrix(plainText);

System.out.println("\n2) Convert the list of points to a binary Matrix");

System.out.println(mMatrix);

System.out.println("\n3) Matrix Scrambling");

int w = new BigInteger(ECC.PAD, ECC.getRandom()).intValue();

int[] bits = Helpers.toBinary(ECC.getRandom().nextInt(1024), ECC.PAD * 2);

System.out.println("number of transformations, w = " + w);

System.out.println("Random sequence of bits, Bits = ");

Helpers.print(bits);

int bit, i = 0;

do {

bit = bits[i];

if (bit == 0) {

mMatrix.scramble(true);

} else {

mMatrix.scramble(false);

}

if (i == bits.length - 1) {

i = 0;

}else{

i++;

}

//System.out.println("scrambling...");

System.out.println(mMatrix);

w--;

} while (w > 0);

return mMatrix;

}

private Matrix createMatrix(String plainText) {

List<Point> pList = new ArrayList<>();

for (Character c : plainText.toCharArray()) {

Point p = charTable.get((int) c.charValue());

pList.add(p);

}

System.out.println("\n1) Convert m to a list of Points");

pList.stream().forEach(System.out::print);

System.out.println("");

List<Integer> bList = new ArrayList<>();

for (Point p : pList) {

String str = toBinary(p.getX()) + "" + toBinary(p.getY());

for (int i = 0; i < str.length(); i++) {

bList.add((str.charAt(i) == '0') ? 0 : 1);

}

return Helpers.listToMatrix(bList);

}

JavaDataStructures/ECC/Encoder.java at master · benaich/JavaDataStructures · GitHub

Expand file tree

Breadcrumbs

Encoder.java

Latest commit

History

Breadcrumbs

Encoder.java

File metadata and controls