72iyTsiE

1String password = "s5A[=a";
2	
3public String getHashOfPassword(String passwordToHash){
4        String generatedHash = null;
5            try {
6                 MessageDigest md = MessageDigest.getInstance("SHA-512");
7                 byte[] bytes = md.digest(passwordToHash.getBytes(StandardCharsets.UTF_8));
8                 StringBuilder sb = new StringBuilder();
9                 for(int i=0; i< bytes.length ;i++){
10                    sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));
11                 }
12                 generatedHash = sb.toString();
13                } 
14               catch (NoSuchAlgorithmException e){
15
16                e.printStackTrace();
17               }
18            return generatedHash;
19        }
20	
21public static byte[] generateSymmkey() throws UnrecoverableKeyException {
22    Key key = null;
23    try {
24        KeyStore keyStore = KeyStore.getInstance("JCEKS");
25        FileInputStream stream = new FileInputStream("C:\Users\AlokK\Documents\keystore\aes-keystore.jck");
26        keyStore.load(stream, "mystorepass".toCharArray());
27        key = keyStore.getKey("jceksaes", "mykeypass".toCharArray());
28    } catch (Exception e) {
29        e.printStackTrace();
30
31    }
32    return key.getEncoded();
33}
34
35public static String encryptWithAESKey(String data, byte[] key)
36        throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException,
37        BadPaddingException, UnsupportedEncodingException {
38    String encryptedText = null;
39    try {
40        SecretKey secKey = new SecretKeySpec(key, "AES");
41
42        Cipher cipher = Cipher.getInstance("AES");
43
44        cipher.init(Cipher.ENCRYPT_MODE, secKey);
45        byte[] newDataByte = data.getBytes("UTF8");
46        byte[] newData = cipher.doFinal(newDataByte);
47        encryptedText = Base64.getEncoder().encodeToString(newData);
48    } catch (Exception e) {
49        e.printStackTrace();
50
51    }
52    return encryptedText;
53}
54
55public static String decryptWithAESKey(String inputData, byte[] key)
56        throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException,
57        BadPaddingException, UnsupportedEncodingException {
58    Cipher cipher = Cipher.getInstance("AES");
59    SecretKey secKey = new SecretKeySpec(key, "AES");
60
61    cipher.init(Cipher.DECRYPT_MODE, secKey);
62    byte[] newData = cipher.doFinal((Base64.getDecoder().decode(inputData.getBytes())));
63    return new String(newData, "UTF8");
64
65}
66
67public static void main(String[] args) {
68    byte[] key = null;
69    try {
70        key = generateSymmkey();
71    } catch (UnrecoverableKeyException e2) {
72        // TODO Auto-generated catch block
73        e2.printStackTrace();
74    }
75    String data = "vswvrgwrgrwrgrrgrr";
76
77    // Encrypt Data
78    String encryptedData = null;
79    try {
80        encryptedData = encryptWithAESKey(data, key);
81    } catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException | IllegalBlockSizeException
82            | BadPaddingException | UnsupportedEncodingException e1) {
83        // TODO Auto-generated catch block
84        e1.printStackTrace();
85    }
86
87    System.out.println("Encrypted Data : " + encryptedData);
88
89    // Decrypt Data
90    try {
91        System.out.println("Decrypted Data : " + decryptWithAESKey(encryptedData, key));
92    } catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException | IllegalBlockSizeException
93            | BadPaddingException | UnsupportedEncodingException e) {
94        // TODO Auto-generated catch block
95        e.printStackTrace();
96    }
97}
98	
99Encrypted Data : ASS7VgJ+oFi9opJXg8cA5f9C9uzUYgtVRc2Q7Y/xSPo=
100Decrypted Data : vswvrgwrgrwrgrrgrr