CPE Password-of-the-Day Access Without Additional RPCs

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Solution Overview

Problem

Existing customer premises equipment (CPE) systems lack efficient methods for implementing Password-of-The-Day (PoTD) processing due to proprietary software stacks, necessitating the integration of PoTD capabilities without additional remote procedure calls (RPCs) for secure access.

Innovation Solution

Configuring a main processor in CPE with an encrypted seed for PoTD processing, allowing the PoTD component to generate and verify passwords directly, and optionally using a security processor to store the encrypted seed, thereby eliminating the need for additional RPCs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If proprietary software stacks are used in CPE to meet service provider specifications, then security requirements can be satisfied, but additional RPCs are needed for PoTD processing which increases system complexity

Engineering Contradiction:

ImprovesecurityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the PoTD processing functionality with the existing proprietary software stack by integrating the PoTD component into the main processor. This merging eliminates the need for separate RPCs to external PoTD services, reducing system complexity while maintaining security requirements through the unified architecture

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If PoTD capabilities are integrated into existing CPE systems, then secure access is enabled, but the proprietary software stack requires additional RPCs which reduces processing efficiency

Engineering Contradiction:

Improvesecure accessVSAvoidprocessing efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The PoTD component is merged into the main processor's software stack, allowing local generation and verification of PoTD passwords without external RPC calls. This integration maintains secure access capabilities while improving processing efficiency by eliminating network latency and additional communication overhead

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent segments the PoTD processing into distinct functional modules within the main processor, including seed storage, password generation, and verification components. This segmentation allows efficient local processing while maintaining the security requirements through modular design

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12388634B2Customer premises equipment access using password-of-the-day

Publication Date: 2025.08.12 CHARTER COMM OPERATING LLC

AI summary

Methods and systems for configuring a main or security processor in a customer premises equipment (CPE) with an encrypted seed for password-of-the-day (PoTD) processing is described. A CPE includes a modem processor, a main processor, and a PoTD component included on the main processor. The main processor receives, via the modem processor from a user device, an access request to the CPE. In response to the access request, the PoTD component accesses an encrypted seed stored on the main processor, generates a PoTD from the encrypted seed, and provides an access response based on comparison of the generated PoTD with a PoTD provided via the user device. A security processor can be used in lieu of the main processor. The PoTD component is then included in the security processor and the encrypted seed is then stored on the security processor.