Security message filtering using OCDMA encoding
First Claim
1. A method for communicating secure messages in an optical network environment, comprising:
- generating message content for communication between a source node and a destination node within an optical network;
converting the message content to an optical communication packet for transmission to the destination node; and
encoding the optical communication packet for communication across the optical network using a unique code which is known only to the source node and the destination, such that only the destination node will be able to decode the encoded communication packet and others on the optical network will not recognize the encoded packet, wherein the unique code identifies a plurality of particular optical wavelength/time pairs and wherein the optical communication packet is encoded at these particular wavelength/time pairs.
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Abstract
To achieve secure optical communications, a messaging encoding scheme is utilized in which optical communication signals are encoded based upon a known unique code. This encoding methodology allows for the broad transmission across an optical network which will include intended destination. Only the intended destination or destinations will include the necessary unique codes to allow recognition and decoding of the optically encoded message. By providing security in this optical encoding manner, the need for additional message overhead and/or additional systems is thus avoided, thereby providing efficient communication in a secure manner.
25 Citations
17 Claims
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1. A method for communicating secure messages in an optical network environment, comprising:
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generating message content for communication between a source node and a destination node within an optical network; converting the message content to an optical communication packet for transmission to the destination node; and encoding the optical communication packet for communication across the optical network using a unique code which is known only to the source node and the destination, such that only the destination node will be able to decode the encoded communication packet and others on the optical network will not recognize the encoded packet, wherein the unique code identifies a plurality of particular optical wavelength/time pairs and wherein the optical communication packet is encoded at these particular wavelength/time pairs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for providing secure communications in an optical network which includes a plurality of nodes, comprising:
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providing each node with at least one encoder capable of encoding messages using pre-established encoding codes, wherein each encoding code comprises at least one wavelength/time pair and is assigned according to an overall network protocol, wherein the network protocol designates approved communication pathways and approved message types for transmission across the approved pathways; generating messages to be transmitted; encoding messages to be transmitted using optical code division multiple access using the unique codes assigned to the encoder such that only those recipients on the optical network which are approved for receipt of the encoded message will be capable of recognizing the encoded message due to position of an identical unique code wherein the unique code identifies a location within a transmission signal that will contain the encoded messages; transmitting the encoded messages across the optical network; and recognizing and decoding, at the intended nodes on the optical network, the transmitted message due to their possession of the unique code. - View Dependent Claims (10, 11, 12, 13)
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14. A secure communication system, comprising:
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a first node having a source system for producing a message to be transmitted, an optical transmitter for converting the message to be transmitted into an optical signal, and an optical encoder for encoding the optical signal thus producing an encoded optical message, wherein the optical encoder encodes the message using a unique code previously provided to the encoder based on a pre-established communication protocol, wherein the unique code comprises a set of particular wavelength/time pairs including a plurality of wavelengths and corresponding times, wherein the set of particular wavelength/time pairs identify locations within a transmitted signal which contain meaningful information making up the message; an optical network for receiving the encoded optical message and transmitting to a plurality of node attached to the network; and a second node having a decoder for decoding the encoded message, the decoder having the unique code thus providing the ability to recognize and decode the encoded optical message, the second node further having a receiver for receiving the decoded optical message and converting the message to an electrical format for transmission to a receiving system. - View Dependent Claims (15, 16, 17)
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Specification