jgcnjQ4Z

1//Gerar Key
2        KeyGenerator keyGen = KeyGenerator.getInstance("AES");
3        keyGen.init(128);
4        SecretKey sk = keyGen.generateKey();
5        byte[] keyBytes = sk.getEncoded();
6        
7        FileInputStream pb = new FileInputStream("publico.txt");
8        byte[] pub = new byte[pb.available()];
9        pb.read(pub);
10        
11        X509EncodedKeySpec keyP = new X509EncodedKeySpec(pub);
12        KeyFactory kf = KeyFactory.getInstance("RSA");
13        PublicKey key = kf.generatePublic(keyP);
14        
15        Cipher cp = Cipher.getInstance("RSA");
16        cp.init(Cipher.ENCRYPT_MODE, key);
17        byte[] cipherBytes = cp.doFinal(keyBytes);
18        
19        return cipherBytes;