Message Chunk Traceability via Segmented Cryptographic Signing

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Solution Overview

Problem

In threaded electronic messages, it is difficult to track and verify the contributions and modifications of multiple contributors, as existing technologies lack clear mechanisms for change tracking and authentication, especially when forwarding, quoting, or dealing with multiple branches, leading to potential misquotation and unwanted manipulation.

Innovation Solution

The solution involves breaking down messages into chunks, signing them with the originator's signature, and providing verification for each chunk, allowing recipients to determine the source and integrity of quoted content, with indicators for trustworthiness displayed alongside the message.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a sender signs the entire message to protect it, then the message integrity is protected, but individual contributions within the message cannot be separately protected or verified

Engineering Contradiction:
Improvemessage integrityVSAvoidcontribution ownership
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The patent divides a message into multiple segments or chunks, where each segment can be independently signed and verified. This allows individual contributions within a message to be separately protected while maintaining overall message integrity through cryptographic segmentation.

Inventive Principle:
Principle #1Segmentation

2Loss of information

If version control systems are used to track email threads, then change tracking is possible, but the systems cannot handle forwarding, quoting, multiple branches, or unauthenticated servers

Engineering Contradiction:
Improvechange trackingVSAvoidmessaging operations support
Core Design Contradiction:
Loss of informationVSAdaptability or versatility

Solution Approach 1:

The patent creates a cryptographic framework that universally handles various messaging operations including forwarding, quoting, branching threads, and cross-server communication. The segment-based signing approach provides a unified solution that adapts to diverse messaging scenarios without requiring system-specific modifications.

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

3Reliability

If XML digital signature rules are used for fragment protection, then non-repudiation is achieved, but in-fragment editing and lineage demarcation become difficult

Engineering Contradiction:
Improvenon-repudiationVSAvoidfragment editing
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent enables dynamic editing of message segments while maintaining cryptographic integrity. By allowing segments to be independently signed and reassembled, the system permits legitimate editing operations (such as quoting or forwarding portions of messages) while preserving non-repudiation through the segment signature chain.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS8812853B1Traceability for threaded communications
Publication Date: 2014.08.19 AVAYA INC
  • US8812853B1 patent drawing
  • US8812853B1 patent drawing
  • US8812853B1 patent drawing

AI summary

Individual chunks of a message are signed with their originators' signatures, thereby providing traceability in threaded messages so that every contributor's content as well as modifications thereof can be identified.