예제 #1
0
 /**
  * Creates the LM Hash of the user's password.
  *
  * @param password The password.
  * @return The LM Hash of the given password
  */
 public static String lmHash(final String password) throws Exception {
   final byte[] oemPassword = password.toUpperCase().getBytes("US-ASCII");
   final int length = Math.min(oemPassword.length, 14);
   final byte[] keyBytes = new byte[14];
   System.arraycopy(oemPassword, 0, keyBytes, 0, length);
   final Key lowKey = SMBHash.createDESKey(keyBytes, 0);
   final Key highKey = SMBHash.createDESKey(keyBytes, 7);
   final byte[] magicConstant = "KGS!@#$%".getBytes("US-ASCII");
   final Cipher des = Cipher.getInstance("DES/ECB/NoPadding");
   des.init(Cipher.ENCRYPT_MODE, lowKey);
   final byte[] lowHash = des.doFinal(magicConstant);
   des.init(Cipher.ENCRYPT_MODE, highKey);
   final byte[] highHash = des.doFinal(magicConstant);
   final byte[] lmHash = new byte[16];
   System.arraycopy(lowHash, 0, lmHash, 0, 8);
   System.arraycopy(highHash, 0, lmHash, 8, 8);
   return SMBHash.toHexString(lmHash);
 }
예제 #2
0
 /**
  * Creates a DES encryption key from the given key material.
  *
  * @param bytes A byte array containing the DES key material.
  * @param offset The offset in the given byte array at which the 7-byte key material starts.
  * @return A DES encryption key created from the key material starting at the specified offset in
  *     the given byte array.
  */
 private static Key createDESKey(final byte[] bytes, final int offset) {
   final byte[] keyBytes = new byte[7];
   System.arraycopy(bytes, offset, keyBytes, 0, 7);
   final byte[] material = new byte[8];
   material[0] = keyBytes[0];
   material[1] = (byte) (keyBytes[0] << 7 | (keyBytes[1] & 0xff) >>> 1);
   material[2] = (byte) (keyBytes[1] << 6 | (keyBytes[2] & 0xff) >>> 2);
   material[3] = (byte) (keyBytes[2] << 5 | (keyBytes[3] & 0xff) >>> 3);
   material[4] = (byte) (keyBytes[3] << 4 | (keyBytes[4] & 0xff) >>> 4);
   material[5] = (byte) (keyBytes[4] << 3 | (keyBytes[5] & 0xff) >>> 5);
   material[6] = (byte) (keyBytes[5] << 2 | (keyBytes[6] & 0xff) >>> 6);
   material[7] = (byte) (keyBytes[6] << 1);
   SMBHash.oddParity(material);
   return new SecretKeySpec(material, "DES");
 }
예제 #3
0
 /**
  * Creates the NTLM Hash of the user's password.
  *
  * @param password The password.
  * @return The NTLM Hash of the given password.
  */
 public static String ntlmHash(final String password) throws Exception {
   final byte[] unicodePassword = password.getBytes("UnicodeLittleUnmarked");
   final MessageDigest md4 = MessageDigest.getInstance("MD4");
   return SMBHash.toHexString(md4.digest(unicodePassword));
 }