dFbE766G

1PDF encryption/Decryption in android?
2FileInputStream fis = new FileInputStream(new File("D:/Shashank/Test123.txt"));
3        File outfile = new File("D:/Shashank/encTest1234.txt");
4        int read;
5        if(!outfile.exists())
6            outfile.createNewFile();
7        File decfile = new File("D:/Shashank/dec123.txt");
8        if(!decfile.exists())
9            decfile.createNewFile();
10        FileOutputStream fos = new FileOutputStream(outfile);
11        FileInputStream encfis = new FileInputStream(outfile);
12        FileOutputStream decfos = new FileOutputStream(decfile);
13        Cipher encipher = Cipher.getInstance("AES");
14        Cipher decipher = Cipher.getInstance("AES");
15        KeyGenerator kgen = KeyGenerator.getInstance("AES");
16        SecretKey skey = kgen.generateKey();
17        encipher.init(Cipher.ENCRYPT_MODE, skey);
18        CipherInputStream cis = new CipherInputStream(fis, encipher);
19        decipher.init(Cipher.DECRYPT_MODE, skey);
20        CipherOutputStream cos = new CipherOutputStream(decfos,decipher);
21        while((read = cis.read())!=-1)
22                {
23                    fos.write((char)read);
24                    fos.flush();
25                }   
26        fos.close();
27        while((read=encfis.read())!=-1)
28        {
29            cos.write(read);
30            cos.flush();
31        }
32    cos.close();