Network Watermark Path Verification for MANET Impersonation Defense

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Solution Overview

Problem

Existing network security technologies, such as digital and hardware watermarks, are inadequate in preventing attacks like Sybil, Stolen Identity, Invisible Node, Rush, Blackhole, and Jellyfish in MANet and ad-hoc networks, compromising the integrity of network communications.

Innovation Solution

Implementing a network watermark process that creates a verifiable communications path by verifying unique identifiers (UIDs) and class identifiers through a network of nodes, ensuring the authenticity and security of the communication path by checking against valid UIDs and class identifiers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If digital and hardware watermarks are used for network security, then some security protection is provided, but they cannot prevent attacks like Sybil, Stolen Identity, Invisible Node, Rush, Blackhole, and Jellyfish

Engineering Contradiction:
Improvenetwork securityVSAvoidimpersonation attacks
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The network path is segmented into multiple hops with each node verifying the path segment. The watermark is divided into path verification components that are validated at each intermediate node, allowing detection of attacks at any segment rather than relying on a single centralized verification

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The network path is verified and watermarked before actual data transmission occurs. Intermediate nodes perform path verification in advance by checking watermarks and validating communication credentials, preventing attacks before they can compromise information integrity

Inventive Principle:
Principle #10Preliminary action

2Reliability

If path verification is performed at each intermediate node, then network security and path authenticity are improved, but communication overhead and processing time increase

Engineering Contradiction:
Improvepath authenticityVSAvoidverification time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

Instead of continuous verification, path verification is performed periodically at discrete intermediate nodes along the communication path. Each node verifies the watermark only when data passes through it, rather than maintaining constant verification pressure, reducing cumulative verification time while maintaining security

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

Watermark information is replicated and transmitted through each intermediate node along the path. Each node uses a copy of the watermark information for verification rather than requiring the original verification authority to validate every path detail, distributing the verification burden and reducing centralized processing time

Inventive Principle:
Principle #26Copying

3Reliability

If unique identifiers and class identifiers are verified through multiple nodes, then impersonation attacks are prevented, but network complexity increases

Engineering Contradiction:
Improveanti-impersonation securityVSAvoidverification process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The same watermark verification mechanism is applied universally across all intermediate nodes regardless of network type or node identity. Each node performs the same verification function using standardized procedures, simplifying the overall system architecture rather than requiring node-specific complex verification logic

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

Watermark information acts as an intermediary carrier that conveys path verification data between nodes. Rather than requiring direct complex verification between communicating nodes, the watermark serves as an intermediate verification mechanism that simplifies the interaction protocol at each node

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS12445490B2Network watermark
Publication Date: 2025.10.14 CODE-X DELAWARE INC
  • US12445490B2 patent drawing
  • US12445490B2 patent drawing
  • US12445490B2 patent drawing

AI summary

A network communications method utilizing a network watermark for providing security in the communications includes creating a verifiable network communications path of nodes through a network for the transfer of information from a first end node to a second end node; verifying the network communications path of nodes, by the first end node, before communicating by the first end node information intended for receipt by the second end node; and once the network communications path of nodes is verified by the first end node, communicating by the first end node, via the verified communications path of nodes, the information intended for receipt by the second end node; wherein the network watermark represents the verifiable network communications path of nodes.