| 摘要 |
Apparatus for verifying the identity of a party are disclosed, the apparatus including a database memory that stores a password signal encrypted by operation of a one-way commutative function; a number generator that generates an non-repeating number or signal representative thereof; and a processor element that can generate a challenge signal as a function of the number signal and a selected one-way commutative function and that can further generate a key signal as a function of the encrypted password signal and the number. The system includes a communication port for transmitting the generated challenge signal to a party requesting access to the secure system and for receiving a response from the party; and further includes a comparator element for comparing the received response with the generated key signal and for generating a match signal that indicates whether the response signal received from the party is substantially identical to the encrypted password signal stored in the database memory.
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