Multi-server one-time passcode verification on respective high order and low order passcode portions

An apparatus for authenticating a user, the apparatus comprising:

• a memory;
• and
• at least one hardware device, coupled to the memory, operative to implement the following steps:
• receiving an authentication passcode generated by a token associated with said user, wherein the received authentication passcode comprises a high-order portion and a low-order portion;
• providing the received authentication passcode to a first authentication server and a second authentication server;
• and
• authenticating the user based on the received authentication passcode using at least the first authentication server and the second authentication server, wherein said first authentication server verifies the high-order portion of the received authentication passcode and wherein said second authentication server verifies the low-order portion of the received authentication passcode, wherein a binary codebook B is used to embed additional auxiliary information into said authentication passcode.

An article of manufacture for authenticating a user, comprising a non-transitory machine readable recordable storage medium containing one or more programs which when executed implement the steps of:

• receiving an authentication passcode generated by a token associated with said user, wherein the received authentication passcode comprises a high-order portion and a low-order portion;
• providing the received authentication passcode to a first authentication server and a second authentication server;
• and
• authenticating the user based on the received authentication passcode using at least the first authentication server and the second authentication server, wherein said first authentication server verifies the high-order portion of the received authentication passcode and wherein said second authentication server verifies the low-order portion of the received authentication passcode, wherein a binary codebook B is used to embed additional auxiliary information into said authentication passcode.