System, method, and computer program for communicating a key recovery block to enable third party monitoring without modification to the intended receiver
First Claim
1. A method for communicating a key recovery block signal from a sender to a receiver over a communication link, for an entity coupled to the link, to monitor the key recovery block signal, comprising:
- providing an echo request protocol program to the sender;
providing an echo reply protocol program to the receiver;
sending an echo request message signal with a key recovery block signal from the sender using said echo request protocol request message, over the link to the sender; and
sending an echo reply message signal from the receiver using said echo reply protocol in response to the echo request message signal, over the link to the sender.
1 Assignment
0 Petitions
Accused Products
Abstract
A method is disclosed for communicating a key recovery block from a sender to a non-enabled receiver, without the danger of throwing the receiver into an indeterminant state, and without modifying the receiver. The method uses an unmodified communications protocol that has a standard method to receive and acknowledge arbitrary data. The sender sends a message using the standard method for arbitrary data, and includes in the message the key recovery block. The receiver responds with a standard acknowledgment message. The method thereby enables an entity coupled to the link, to monitor the key recovery block, even though the receiver is not enabled to process it.
94 Citations
39 Claims
-
1. A method for communicating a key recovery block signal from a sender to a receiver over a communication link, for an entity coupled to the link, to monitor the key recovery block signal, comprising:
-
providing an echo request protocol program to the sender; providing an echo reply protocol program to the receiver; sending an echo request message signal with a key recovery block signal from the sender using said echo request protocol request message, over the link to the sender; and sending an echo reply message signal from the receiver using said echo reply protocol in response to the echo request message signal, over the link to the sender. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A system for communicating a key recovery block signal from a sender to a receiver over a communication link, for an entity coupled to the link, to monitor the key recovery block signal, comprising:
-
an echo request protocol means in the sender; an echo reply protocol means in the receiver; means for sending an echo request message signal with a key recovery block signal from the sender using an echo request protocol provided by said echo request protocol means over the link to the receiver; and means for sending an echo reply message signal from the receiver using an echo reply protocol provided by said echo reply protocol means in response to the echo request message, over the link to the sender. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A article of manufacture for a computer for communicating a key recovery block signal from a sender to a receiver over a communication link, for an entity coupled to the link, to monitor the key recovery block signal, comprising:
-
a computer readable medium; computer program means in said medium or providing an echo request protocol program to the sender; computer program means in said medium for providing an echo reply protocol program to the receiver; computer program means in said medium for sending an echo request message signal with a key recovery block signal from the sender using said echo request protocol over the link to the receiver; and computer program means in said medium for sending an echo reply message signal from the receiver using said echo reply protocol in response to the echo request message, over the link to the sender. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. A method for communicating a key recovery block signal from a sender to a receiver over a communication link using a first communications protocol program that has a first sending method for a sender to send arbitrary data and a first receiving method for a receiver to receive and acknowledge the arbitrary data, for an entity coupled to the link to monitor the key recovery block signal, comprising:
-
sending a message signal by a sender using the first sending method to send arbitrary data, and including in the message a key recovery block signal; and receiving and acknowledging the message by a receiver with an acknowledge signal using the first receiving method to receive and acknowledge the arbitrary data. - View Dependent Claims (32, 33)
-
-
34. A system for communicating a key recovery block signal from a sender to a receiver over a communication link using a first communications protocol program that has a method for a sender to send arbitrary data and a first receiving method for a receiver to receive and acknowledge the arbitrary data, an entity coupled to the link to monitor the key recovery block signal, comprising:
-
means for sending a message signal by a sender using the first sending method to send arbitrary data, and including in the message a key recovery block signal; and means for receiving and acknowledging the message by a receiver with an acknowledge signal using the first receiving method to receive and acknowledge the arbitrary data. - View Dependent Claims (35, 36)
-
-
37. A article of manufacture for a computer for communicating a key recovery block from a sender to a receiver over a communication link using a first communications protocol that has a first receiving method for a sender to send arbitrary data and a first receiving method for a receiver to receive and acknowledge the arbitrary data, for an entity coupled to the link to monitor the key recovery block signal, comprising:
-
a computer readable medium; computer program means in said medium for sending a message signal by a sender using the first sending method to send arbitrary data, and including in the message a key recovery block signal; and computer program means in said medium for receiving and acknowledging the message by a receiver with an acknowledge signal using the first receiving method to receive and acknowledge the arbitrary data. - View Dependent Claims (38, 39)
-
Specification