Media-Based Authentication Key Generation Using Cell Sampling

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Solution Overview

Problem

Existing authentication methods lack a robust and versatile solution for generating and verifying input keys for secure access to resources, particularly in scenarios requiring diverse media types and ensuring high security and adaptability.

Innovation Solution

A method and system that involve obtaining input media, determining a reference point, sampling the media to generate cell data, and creating an input key, which is then compared to a reference key for authentication, allowing for various media types such as images, audio, and text, with optional encryption and dynamic key generation techniques.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional authentication methods (PIN, password, employee badge) are used, then implementation is simple and widely understood, but security is insufficient and vulnerable to theft or unauthorized access

Engineering Contradiction:

Improveauthentication securityVSAvoidauthentication system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the authentication media into discrete cells that are sampled at reference points. Each cell contains a portion of the authentication data, and the system processes these cells individually to generate authentication keys. This segmentation allows complex biometric or media-based authentication to be broken down into manageable, secure units that can be verified without exposing the entire authentication data.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary processing layer that converts raw authentication media into sampled cell data, which is then transformed into authentication keys through cryptographic functions. This intermediary process acts as a mediator between the input media and the final authentication decision, enhancing security by preventing direct access to the raw authentication data while maintaining system reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If biometric authentication (fingerprint, voice, retinal images) is used, then authentication reliability improves, but processing complexity and computational requirements increase

Engineering Contradiction:

Improveauthentication accuracyVSAvoidprocessing system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts specific reference points and samples cells from the input media at these reference points, rather than processing the entire media file. This extraction approach isolates the critical authentication features from the bulk data, reducing computational complexity while maintaining authentication accuracy by focusing processing resources on the most discriminative portions of the biometric data.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent performs preliminary sampling and cell generation from the input media before the actual authentication comparison. By pre-processing the media into standardized cell structures at reference points, the system prepares the authentication data in advance, reducing the computational burden during the actual authentication event and enabling faster, more efficient verification of biometric characteristics.

Inventive Principle:

Principle #10Preliminary action

3Measurement precision

If the authentication system processes entire media files, then comprehensive analysis is achieved, but processing time and computational resources increase significantly

Engineering Contradiction:

Improveauthentication verification accuracyVSAvoidauthentication processing time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent applies partial action by processing only sampled cells at specific reference points within the media rather than analyzing the entire media file. This selective processing approach achieves sufficient authentication precision by focusing on critical reference regions, while significantly reducing processing time and computational resource requirements compared to comprehensive full-file analysis.

Inventive Principle:

Principle #16Partial or excessive action

4Adaptability or versatility

If the system supports multiple media types (images, audio, text), then adaptability and versatility improve, but system complexity and implementation difficulty increase

Engineering Contradiction:

Improvemedia type flexibilityVSAvoidsystem implementation complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal authentication framework that processes multiple media types (images, audio, text) through a common cell-based sampling and key generation mechanism. The system uses a unified reference point determination and cell sampling approach that adapts to different media types without requiring separate processing pipelines, thereby achieving multi-functionality while controlling system complexity through standardized processing steps.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS8843759B2Methods, systems, and computer program products for media-based authentication

Publication Date: 2014.09.23 AT&T INTELLECTUAL PROPERTY I L P

AI summary

A method for generating an input key for authenticating access to a resource, the method including obtaining an input media; determining a reference point in the input media; sampling the input media in response to determining the reference point to define an input media sample; generating cell data from the input media sample; and generating the input key using the cell data.