private static String getSecurePassword(String passwordToHash, String salt) {
String generatedPassword = null;
try {
// Create MessageDigest instance for MD5
MessageDigest md = MessageDigest.getInstance("MD5");
// Add password bytes to digest
md.update(salt.getBytes());
// Get the hash's bytes
byte[] bytes = md.digest(passwordToHash.getBytes());
// This bytes[] has bytes in decimal format;
// Convert it to hexadecimal format
StringBuilder sb = new StringBuilder();
for (int i = 0; i < bytes.length; i++) {
sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));
}
// Get complete hashed password in hex format
generatedPassword = sb.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return generatedPassword;
}
public String sendDetails(String password, byte[] phash, String transactionID, byte[] spdata)
throws RemoteException, NotBoundException, NoSuchAlgorithmException, NoSuchPaddingException,
InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, privateKey);
byte[] cipherData = cipher.doFinal(spdata);
String x = new String(cipherData);
String sp[] = new String[10];
StringTokenizer st = new StringTokenizer(x.toString(), "|");
int count = 0;
StringBuilder message = new StringBuilder();
while (st.hasMoreTokens()) {
sp[count] = st.nextToken();
count++;
}
String decodemessgae = new String();
if (securePassword.equals(sp[1]) && serviceProviderId.equals(sp[0].toString().trim())) {
System.out.println("hellosubba");
if (transactionID.equals(transactionDetails[0].toString())) {
int qrData[] = new int[16];
for (int i = 0; i < password.length(); i++) {
message.append(password.charAt(i) ^ bioTemplate.charAt(i));
}
for (int i = 0; i < message.length(); i++) {
if (message.charAt(i) == '1') {
decodemessgae += '0';
} else decodemessgae += '1';
}
int start = 56, end = 63;
for (int i = 0; i < 16; i++) {
qrData[i] = Integer.parseInt(decodemessgae.substring(start, end), 2);
start += 64;
end += 64;
}
RsDecode dec = new RsDecode(16);
int r = dec.decode(qrData);
System.out.println("r=" + r);
System.out.println("qrData=" + java.util.Arrays.toString(qrData));
int[] MM = new int[qrData.length + 16];
System.arraycopy(qrData, 0, MM, 0, qrData.length);
RsEncode enc = new RsEncode(16);
enc.encode(MM);
System.out.println("qrData=" + java.util.Arrays.toString(MM));
}
} else {
message.append("unkonw third party user");
}
return message.toString();
}
public static void main(String args[]) {
try {
// ReceiveMessageInterface rmiclient;
RmiServer server = new RmiServer();
// rmiclient=(ReceiveMessageInterface)(registry.lookup("rmiclient"));
// rmiclient.generateKeys(publicKey);
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
keyGen.initialize(1024);
KeyPair keypair = keyGen.genKeyPair();
publicKey = keypair.getPublic();
privateKey = keypair.getPrivate();
BufferedImage image = ImageIO.read(new File("/home/subba/Desktop/test/iris1.bmp"));
// write it to byte array in-memory (jpg format)
ByteArrayOutputStream b = new ByteArrayOutputStream();
ImageIO.write(image, "bmp", b);
// do whatever with the array...
byte[] jpgByteArray = b.toByteArray();
// convert it to a String with 0s and 1s
StringBuilder sb = new StringBuilder();
int i = 0;
for (byte by : jpgByteArray) {
i++;
if (i > 366) break;
sb.append(Integer.toBinaryString(by & 0xFF));
}
sb.append("0000000000000000000000000000000000000000000");
System.out.println(sb.toString().length());
System.out.println(sb.toString());
int token = 170;
StringBuilder sb1 = new StringBuilder();
sb1.append(Integer.toBinaryString(token));
for (int j = 0; j < 102; j++) {
sb1.append("00000000000000000000");
}
System.out.println("Binary is " + sb1.length());
for (i = 0; i < sb.length(); i++) {
bioTemplate.append(sb.charAt(i) ^ sb1.charAt(i));
}
/*MessageDigest digest = MessageDigest.getInstance("SHA-256");
byte[] hashvalue=serviceProviderKey.getBytes();
digest.update(hashvalue);
Phashdigest=digest.digest();
*/
securePassword = getSecurePassword(serviceProviderKey, "200");
System.out.println(securePassword);
} catch (Exception e) {
e.printStackTrace();
System.exit(1);
}
}
