KF4N3QNb

1import javax.crypto.*;
2import javax.crypto.spec.IvParameterSpec;
3import javax.crypto.spec.SecretKeySpec;
4import java.net.*;
5import java.io.*;
6import java.security.InvalidAlgorithmParameterException;
7import java.security.InvalidKeyException;
8import java.security.NoSuchAlgorithmException;
9
10public class Client {
11    public static void main(String args[]) {
12
13        Socket s = null;
14        int serversocket = 4567;
15        try {
16            s = new Socket("127.0.0.1", serversocket);
17
18            //DataInputStream in = new DataInputStream(s.getInputStream());
19            //DataOutputStream out = new DataOutputStream(s.getOutputStream());
20
21            //String text = "";
22            //InputStreamReader input = new InputStreamReader(System.in);
23            //BufferedReader reader = new BufferedReader(input);
24
25            /*while (true) {
26                try {
27                    text = reader.readLine();
28                } catch (Exception e) {}
29
30                out.writeUTF(text);
31
32                /*String data = in.readUTF();
33                System.out.println(data);
34            }*/
35
36            //Cipher c = Cipher.getInstance("AES/CTR/NoPadding");
37
38            while (true){
39                //key
40                /*KeyGenerator keyGen = KeyGenerator.getInstance("AES");
41                keyGen.init(128);
42                SecretKey secretKey = keyGen.generateKey();*/
43                byte [] key = {1,2,3,4,1,2,3,4,1,2,3,4,1,2,3,4};
44                SecretKey secretKey = new SecretKeySpec(key, 0, key.length, "AES");
45
46                //nonce
47                byte[] nonce={1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
48                IvParameterSpec iv = new IvParameterSpec(nonce);
49
50                Cipher c = Cipher.getInstance("AES/CTR/NoPadding");
51                c.init(Cipher.ENCRYPT_MODE, secretKey, iv);
52
53
54                FileOutputStream file = new FileOutputStream("C:\\Users\\maria\\IdeaProjects\\AC2\\src\\encrypt.txt");
55                CipherOutputStream cos = new CipherOutputStream(file, c);
56                int text;
57                while((text=System.in.read())!=-1) {
58                    cos.write((byte)text);
59                    cos.flush();
60                }
61            }
62        } catch (UnknownHostException e) {
63            System.out.println("Sock:" + e.getMessage());
64        } catch (EOFException e) {
65            System.out.println("EOF:" + e.getMessage());
66        } catch (IOException e) {
67            System.out.println("IO:" + e.getMessage());
68        } catch (NoSuchPaddingException e) {
69            e.printStackTrace();
70        } catch (NoSuchAlgorithmException e) {
71            e.printStackTrace();
72        } catch (InvalidAlgorithmParameterException e) {
73            e.printStackTrace();
74        } catch (InvalidKeyException e) {
75            e.printStackTrace();
76        } finally {
77            if (s != null)
78                try {
79                    s.close();
80                } catch (IOException e) {
81                    System.out.println("close:" + e.getMessage());
82                }
83        }
84    }
85
86    public void writeFile(Cipher c, String inputFile)
87            throws IOException {
88        FileOutputStream file = new FileOutputStream(inputFile);
89        CipherOutputStream cos = new CipherOutputStream(file, c);
90        int text;
91        while((text=System.in.read())!=-1) {
92            cos.write((byte)text);
93            cos.flush();
94        }
95    }
96}