wFdRTki1

1private String encryptPacket(String packet, String pubKey)
2{
3    PublicKey clientPub = KeyFunctions.stringToKey(pubKey);
4    String aesEncryptedData = null;
5    byte[] rsaEncryptedData = null;
6    String temp = null;
7
8    try
9    {
10        // AES
11        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
12        final SecretKeySpec secretKey = new SecretKeySpec(Constants.KEY.getBytes(), "AES");
13        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
14        aesEncryptedData = Base64.encodeToString(cipher.doFinal(packet.getBytes()), Base64.NO_PADDING|Base64.NO_WRAP);   //base64 the aes
15
16        // RSA
17        Cipher c = Cipher.getInstance("RSA/ECB/PKCS1Padding");
18        c.init(Cipher.ENCRYPT_MODE, clientPub);
19        rsaEncryptedData = c.doFinal(aesEncryptedData.getBytes());
20        temp = Base64.encodeToString(rsaEncryptedData, Base64.NO_PADDING|Base64.NO_WRAP);  // base 64 the rsa
21        Log.d("ENC SEND", temp);
22    } catch (Exception e)
23    {
24        e.printStackTrace();
25    }
26    return temp;
27}
28
29public String decryptPacket(String encryptedData, Context context)
30{
31    // get the keys
32    PrivateKey pri = KeyFunctions.getPrivateKey(context);
33    byte[] packet = null;
34    byte[] decrypted = null;
35    String temp = null;
36
37    try
38    {
39        //RSA
40        Cipher c = Cipher.getInstance("RSA/ECB/PKCS1Padding");
41        c.init(Cipher.DECRYPT_MODE, pri);
42        byte[] rsaTempArray = Base64.decode(encryptedData, Base64.NO_PADDING|Base64.NO_WRAP);
43        packet = c.doFinal(rsaTempArray);
44
45        // AES
46        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
47        final SecretKeySpec secretKey = new SecretKeySpec(Constants.KEY.getBytes(), "AES");
48        cipher.init(Cipher.DECRYPT_MODE, secretKey);
49        final String decryptedString = new String(cipher.doFinal(Base64.decode(packet, Base64.NO_PADDING|Base64.NO_WRAP)));
50        temp =  decryptedString;
51    } catch (Exception e)
52    {
53        e.printStackTrace();
54    }
55    Log.d("ENC REC", temp);
56    return temp;
57}
58	
59private byte[] encryptPacket(Packet packet, String pubKey)
60{
61    PublicKey clientPub = KeyFunctions.stringToKey(pubKey);
62    byte[] aesEncryptedData = null;
63    byte[] rsaEncryptedData = null;
64    byte[] temp = null;
65
66    Log.d("START", "==========ENCRYPT==========");
67    try
68    {
69        // AES
70        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
71        final SecretKeySpec secretKey = new SecretKeySpec(Constants.KEY.getBytes(), "AES");
72        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
73        byte aesTempArray[] = cipher.doFinal(packet.getBytes());
74        Log.d("ENC AES TEMP", new String(aesTempArray, "UTF-8"));
75        aesEncryptedData = Base64.encode(aesTempArray, Base64.NO_PADDING | Base64.NO_WRAP);   //base64 the aes
76        Log.d("ENC AES ENCR", new String(aesEncryptedData, "UTF-8"));
77
78        // RSA
79        Cipher c = Cipher.getInstance("RSA/ECB/PKCS1Padding");
80        c.init(Cipher.ENCRYPT_MODE, clientPub);
81        rsaEncryptedData = c.doFinal(aesEncryptedData);
82        Log.d("ENC RSA ENCR", new String(rsaEncryptedData, "UTF-8"));
83        temp = Base64.encode(rsaEncryptedData, Base64.NO_PADDING | Base64.NO_WRAP);  // base 64 the rsa
84        Log.d("ENC RSA TEMP", new String(temp, "UTF-8"));
85    } catch (Exception e)
86    {
87        e.printStackTrace();
88    }
89    return temp;
90}
91
92public Packet decryptPacket(byte[] encryptedData, Context context)
93{
94    // get the keys
95    PrivateKey pri = KeyFunctions.getPrivateKey(context);
96    Packet p = null;
97    byte[] aesDecryptedData = null;
98    byte[] rsaDecryptedData = null;
99
100
101    Log.d("START", "==========DECRYPT==========");
102    try
103    {
104        //RSA
105        Log.d("DEC INIT", new String(encryptedData, "UTF-8"));
106        Cipher c = Cipher.getInstance("RSA/ECB/PKCS1Padding");
107        c.init(Cipher.DECRYPT_MODE, pri);
108        byte[] rsaTempArray = Base64.decode(encryptedData, Base64.NO_PADDING | Base64.NO_WRAP);
109        Log.d("DEC RSA TEMP", new String(rsaTempArray, "UTF-8"));
110        rsaDecryptedData = c.doFinal(rsaTempArray);
111        Log.d("DEC RSA ENCR", new String(rsaDecryptedData, "UTF-8"));
112
113        // AES
114        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
115        final SecretKeySpec secretKey = new SecretKeySpec(Constants.KEY.getBytes(), "AES");
116        cipher.init(Cipher.DECRYPT_MODE, secretKey);
117        byte[] aesTempArray = Base64.decode(rsaDecryptedData, Base64.NO_PADDING | Base64.NO_WRAP);
118        Log.d("DEC AES TEMP", new String(aesTempArray, "UTF-8"));
119        aesDecryptedData = cipher.doFinal(aesTempArray);
120        Log.d("DEC AES DEC", new String(aesDecryptedData, "UTF-8"));
121        p = new Packet(aesDecryptedData);
122    } catch (Exception e)
123    {
124        e.printStackTrace();
125    }
126    return p;
127}