public void encrypt(int[] buffer) {
            int nLen = buffer.length;
            long lTemp;
            for (int nI = 0; nI < nLen; nI +=2)
            {
                // encrypt a temporary 64bit block
                lTemp = intArrayToLong(buffer, nI);
                lTemp = encryptBlock(lTemp);
                longToIntArray(lTemp, buffer, nI);
            }
        }
encrypts an int buffer (should be aligned to a
two integer border)
@param buffer buffer to encrypt
xmppserver/src/main/java/org/jivesoftware/util/Blowfish.java