import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
public class CbcVigenere {
public static void main(String[] args) throws IOException {
File f= new File(args[0]);
BufferedReader bufferedReader = new BufferedReader(new FileReader(f));
StringBuffer stringBuffer = new StringBuffer();
String line;
while((line =bufferedReader.readLine())!=null){
stringBuffer.append(line).append(\"\ \");
}
String input = stringBuffer.toString();
String extract = input.replaceAll(\"[^a-zA-Z]+\", \"\").toLowerCase();
int k = extract.length();
String plaintxt = extract.replaceAll(\"(.{80})\",\"$1\ \");
System.out.println(\"Plaintext file name: \" + args[0]);
System.out.println(\"Vigenere keyword: \" + args[1]);
System.out.println(\"Initialization vector: \" + args[2]+ \"\ \");
System.out.println(\"Clean Plaintext:\ \ \" + plaintxt + \"\ \");
int pad=0;
do {
extract= extract + \"x\";
pad++;
}while(extract.length() % args[1].length() != 0);
int j=0;
String fullcipher= \"\";
for( int i=0;i<(extract.length()/ args[1].length());i++){
String ciphertxt = encrypt(extract, args[1], args[2], j );
j=j + args[1].length();
args[2] = ciphertxt;
fullcipher = fullcipher + ciphertxt;
}
//System.out.println(plaintxt.length()/args[1].length());
System.out.println(\"Ciphertext:\ \ \" + fullcipher.replaceAll(\"(.{80})\",\"$1\ \"));
System.out.println(\"\ Number of characters in clean plaintext file: \" + k);
System.out.println(\"Block size = \" + args[1].length());
System.out.println(\"Number is pad characters added: \" + pad);
}
public static String encrypt(String txt, String key, String IV, int pos){
String ab =\"\";
String cd =\"\";
for(int i=0; i
Solution
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
public class CbcVigenere {
public static void main(String[] args) throws IOException {
File f= new File(args[0]);
BufferedReader bufferedReader = new BufferedReader(new FileReader(f));
StringBuffer stringBuffer = new StringBuffer();
String line;
while((line =bufferedReader.readLine())!=null){
stringBuffer.append(line).append(\"\ \");
}
String input = stringBuffer.toString();
String extract = input.replaceAll(\"[^a-zA-Z]+\", \"\").toLowerCase();
int k = extract.length();
String plaintxt = extract.replaceAll(\"(.{80})\",\"$1\ \");
System.out.println(\"Plaintext file name: \" + args[0]);
System.out.println(\"Vigenere keyword: \" + args[1]);
System.out.println(\"Initialization vector: \" + args[2]+ \"\ \");
System.out.println(\"Clean Plaintext:\ \ \" + plaintxt + \"\ \");
int pad=0;
do {
extract= extract + \"x\";
pad++;
}while(extract.length() % args[1].length() != 0);
int j=0;
String fullcipher= \"\";
for( int i=0;i<(extract.length()/ args[1].length());i++){
String ciphertxt = encrypt(extract, args[1], args[2], j );
j=j + args[1].length();
args[2] = ciphertxt;
fullcipher = fullcipher + ciphertxt;
}
//System.out.println(plaintxt.length()/args[1].length());
System.out.println(.
![import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
public class CbcVigenere {
public static void main(String[] args) throws IOException {
File f= new File(args[0]);
BufferedReader bufferedReader = new BufferedReader(new FileReader(f));
StringBuffer stringBuffer = new StringBuffer();
String line;
while((line =bufferedReader.readLine())!=null){
stringBuffer.append(line).append(" ");
}
String input = stringBuffer.toString();
String extract = input.replaceAll("[^a-zA-Z]+", "").toLowerCase();
int k = extract.length();
String plaintxt = extract.replaceAll("(.{80})","$1 ");
System.out.println("Plaintext file name: " + args[0]);
System.out.println("Vigenere keyword: " + args[1]);
System.out.println("Initialization vector: " + args[2]+ " ");
System.out.println("Clean Plaintext: " + plaintxt + " ");
int pad=0;
do {
extract= extract + "x";
pad++;
}while(extract.length() % args[1].length() != 0);
int j=0;
String fullcipher= "";
for( int i=0;i<(extract.length()/ args[1].length());i++){
String ciphertxt = encrypt(extract, args[1], args[2], j );
j=j + args[1].length();](https://image.slidesharecdn.com/importjava-230628050224-d720c3fe/85/import-javaiobufferedreader-import-javaiofile-import-javapdf-1-320.jpg)
![args[2] = ciphertxt;
fullcipher = fullcipher + ciphertxt;
}
//System.out.println(plaintxt.length()/args[1].length());
System.out.println("Ciphertext: " + fullcipher.replaceAll("(.{80})","$1 "));
System.out.println(" Number of characters in clean plaintext file: " + k);
System.out.println("Block size = " + args[1].length());
System.out.println("Number is pad characters added: " + pad);
}
public static String encrypt(String txt, String key, String IV, int pos){
String ab ="";
String cd ="";
for(int i=0; i
Solution
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
public class CbcVigenere {
public static void main(String[] args) throws IOException {
File f= new File(args[0]);
BufferedReader bufferedReader = new BufferedReader(new FileReader(f));
StringBuffer stringBuffer = new StringBuffer();
String line;
while((line =bufferedReader.readLine())!=null){
stringBuffer.append(line).append(" ");
}
String input = stringBuffer.toString();
String extract = input.replaceAll("[^a-zA-Z]+", "").toLowerCase();
int k = extract.length();
String plaintxt = extract.replaceAll("(.{80})","$1 ");](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)