Server computer issued credential authentication

A system for authenticating a computer, the system comprising:

• a first computer;
• and
• a second computer in communication with the first computer;
• wherein the first computer and the second computer are configured to execute the following instructions:
• issue a credential based on session information, a hash seed, a maximum iterative value, credential information and an expiration time from the first computer to the second computer;
• upon a loss of connection, transmit the credential and a challenge from the second computer to the first computer;
• transmit a response to the challenge from the first computer to the second computer;
• and
• verify the response with the second computer in order to authenticate and verify the computers and re-establish said connection,
• wherein:
• the second computer is configured to generate a challenge that is a random number, and
• the first computer is configured to generate a response to the challenge by performing a predetermined function on the random number.

A method for authenticating a computer, the method comprising the steps:

• issuing a credential based on session information, a hash seed, a maximum iterative value, credential information and an expiration time from a first computer to a second computer;
• generating with the second computer a first challenge;
• transmitting the credential and the first challenge from the second computer to the first computer;
• determining with the first computer whether the credential is valid;
• computing a first response to the first challenge and generating a second challenge with the first computer;
• transmitting the first response and the second challenge from the first computer to the second computer;
• determining with the second computer whether the first response is valid;
• computing a second response to the second challenge with the second computer;
• transmitting the second response from the second computer to the first computer;
• and
• determining with the first computer whether the second response is valid to verify and authenticate the computers.

A computer-readable storage medium containing a program with instructions that execute the following procedure:

• issue a credential based on session information, a hash seed, a maximum iterative value, credential information and an expiration time from a first computer to a second computer;
• generate a first challenge with the second computer;
• transmit the credential and the first challenge from the second computer to the first computer;
• determine with the first computer whether the credential is valid;
• compute a first response to the first challenge and generate a second challenge with the first computer;
• transmit the first response and the second challenge from the first computer to the second computer;
• determine with the second computer whether the first response is valid to verify the first computer;
• compute a second response to the second challenge with the second computer;
• transmit the second response from the second computer to the first computer;
• and
• determine with the first computer whether the second response is valid to verify and authenticate the computers.

A system for authenticating a computer, the system comprising:

• a first computer;
• and
• a second computer in communication with the first computer;
• wherein the first computer and the second computer are configured to execute the following instructions:
• issue a credential based on session information, a hash seed, a maximum iterative value, credential information and an expiration time from the first computer to the second computer;
• generate a first challenge with the second computer;
• transmit the credential and the first challenge from the second computer to the first computer;
• determine with the first computer whether the credential is valid;
• compute a first response to the first challenge and generate a second challenge with the first computer;
• transmit the first response and the second challenge from the first computer to the second computer;
• determine with the second computer whether the first response is valid;
• compute a second response to the first challenge with the second computer;
• transmit the second response from the second computer to the first computer;
• and
• determine with the first computer whether the second response is valid to authenticate and verify the computers.

A method of authentication performed between a first user with a first computer and a second user with a second computer, the method comprising the steps of:

• issuing a credential based on session information, a hash seed, a maximum iterative value, credential information and an expiration time from the first user to the second user;
• generating a first challenge with the second user;
• transmitting the credential and the first challenge to the first user;
• determining with the first user whether the credential is valid;
• generating with the first user a first response to the first challenge and a second challenge;
• transmitting the first response and the second challenge to the second user;
• determining with the second user whether the first response is valid;
• generating with the second user a second response to the second challenge;
• transmitting the second response to the first user;
• and
• determining with the first user whether the second response is valid in order to authenticate and verify the first and second users.

A method for authenticating a computer, the method comprising the following steps:

• issuing a credential based on session information, a hash seed, a maximum iterative value, credential information and an expiration time from a first computer to a second computer;
• in response to a connection between the first computer and the second computer being terminated, transmitting said credential and a computer challenge from the second computer to the first computer when the second computer is to be authenticated;
• transmitting a response to said computer challenge from said first computer to said second computer;
• and
• verifying at said second computer whether said response is valid, wherein said second computer re-establishes a connection with the first computer when the response is valid,
• wherein:
• the challenge comprises a random number generated by the second computer,
• the first computer generates the response to the challenge by calculating a predetermined function of the random number, and
• the second computer verifies whether the response is valid by calculating the predetermined function of the random number and comparing the result of the calculation to the response.