khKM7de6

1import javax.crypto.*;
2import javax.crypto.spec.IvParameterSpec;
3import java.net.*;
4import java.io.*;
5import java.security.InvalidAlgorithmParameterException;
6import java.security.InvalidKeyException;
7import java.security.NoSuchAlgorithmException;
8
9public class Client {
10    public static void main(String args[]) {
11
12        Socket s = null;
13        int serversocket = 4567;
14        try {
15            s = new Socket("127.0.0.1", serversocket);
16
17            //DataInputStream in = new DataInputStream(s.getInputStream());
18            //DataOutputStream out = new DataOutputStream(s.getOutputStream());
19
20            //String text = "";
21            //InputStreamReader input = new InputStreamReader(System.in);
22            //BufferedReader reader = new BufferedReader(input);
23
24            /*while (true) {
25                try {
26                    text = reader.readLine();
27                } catch (Exception e) {}
28
29                out.writeUTF(text);
30
31                /*String data = in.readUTF();
32                System.out.println(data);
33            }*/
34
35            //Cipher c = Cipher.getInstance("AES/CTR/NoPadding");
36
37            while (true){
38                //key
39                KeyGenerator keyGen = KeyGenerator.getInstance("AES");
40                keyGen.init(128);
41                SecretKey secretKey = keyGen.generateKey();
42
43                //nonce
44                byte[] nonce={1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
45                IvParameterSpec iv = new IvParameterSpec(nonce);
46
47                Cipher c = Cipher.getInstance("AES/CTR/NoPadding");
48                c.init(Cipher.ENCRYPT_MODE, secretKey, iv);
49
50                //try{
51                    FileOutputStream file = new FileOutputStream("C:\\Users\\maria\\IdeaProjects\\AC1\\src\\encrypt.txt");
52                    CipherOutputStream cos = new CipherOutputStream(file, c);
53                    int text;
54                    while((text=System.in.read())!=-1) {
55                        cos.write((byte)text);
56                        cos.write("\n".getBytes());
57                        cos.write("\\\\\\\\\\\\".getBytes());
58                        cos.flush();
59                    }
60                //}
61            }
62
63        } catch (UnknownHostException e) {
64            System.out.println("Sock:" + e.getMessage());
65        } catch (EOFException e) {
66            System.out.println("EOF:" + e.getMessage());
67        } catch (IOException e) {
68            System.out.println("IO:" + e.getMessage());
69        } catch (NoSuchPaddingException e) {
70            e.printStackTrace();
71        } catch (NoSuchAlgorithmException e) {
72            e.printStackTrace();
73        } catch (InvalidAlgorithmParameterException e) {
74            e.printStackTrace();
75        } catch (InvalidKeyException e) {
76            e.printStackTrace();
77        } finally {
78            if (s != null)
79                try {
80                    s.close();
81                } catch (IOException e) {
82                    System.out.println("close:" + e.getMessage());
83                }
84        }
85    }
86
87    public void writeFile(Cipher c, String inputFile)
88            throws IOException {
89        FileOutputStream file = new FileOutputStream(inputFile);
90        CipherOutputStream cos = new CipherOutputStream(file, c);
91        int text;
92        while((text=System.in.read())!=-1) {
93            cos.write((byte)text);
94            cos.flush();
95        }
96    }
97}