Decryption Module for Secure Application Execution

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Solution Overview

Problem

Existing computer systems fail to securely protect private information within application programs from unauthorized access, leading to potential piracy and unauthorized distribution of authorization keys.

Innovation Solution

A method and system that includes a decryption module within the computer system, which receives and decrypts encrypted instructions using a key, ensuring only authorized access to private information by executing the decrypted instructions within a secure private domain or shadow memory, and utilizing encryption algorithms like symmetric and asymmetric key algorithms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If private information is stored in accessible memory, then application programs can execute instructions efficiently, but unauthorized users can access and pirate the application program

Engineering Contradiction:

Improveexecution efficiencyVSAvoidunauthorized access

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the memory system into a public memory domain and a private memory domain. The private domain stores encrypted instructions that are inaccessible to the CPU and unauthorized users, while the public domain stores decryption information. This segmentation allows efficient execution while preventing unauthorized access to private information.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a decryption module as an intermediary between the encrypted instructions in private memory and the CPU. This module decrypts instructions on-demand and transmits them to the CPU for execution, enabling efficient processing while maintaining security through controlled access.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If encrypted instructions are stored in private memory domain, then security is improved, but access and execution time increases

Engineering Contradiction:

ImprovesecurityVSAvoiddecryption time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent performs preliminary actions by pre-storing decryption information (including keys and algorithm data) in the public memory domain before execution. This allows the decryption module to quickly decrypt instructions without time-consuming key management during execution, reducing the time penalty of encryption.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If a decryption module is introduced, then access control is improved, but device complexity increases

Engineering Contradiction:

Improveaccess controlVSAvoidsystem structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The decryption module is designed as a multi-functional component that handles key management, decryption operations, and controlled transmission to the CPU. By consolidating these functions in a single module rather than distributing them across multiple components, the patent improves access control while minimizing the increase in system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS8826037B2Method for decrypting an encrypted instruction and system thereof

Publication Date: 2014.09.02 DF BARLEY LLC

AI summary

Methods of preventing private information, which is hidden within data of a private domain reserved by an application program, from being easily accessed by a CPU and other devices, both where the data of the private domain is decrypted and the access to said data are restricted are disclosed, where the mentioned other devices do not include a decryption module utilized in the methods. Therefore, as long as agreements related to encryptions and decryptions are made in advance between the application program and the decryption module, private information can be well protected.