Blockchain Access Control Interfaces for Smart Contract Security
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Solution Overview
Problem
The blockchain and smart contract ecosystem lacks efficient and secure solutions for extending contract security, with application developers having minimal control over their applications post-publication and limited protection against malicious attacks.
Innovation Solution
A computer-implemented method involving storing a private cryptographic key on a blockchain, receiving access control settings, reviewing metadata, generating a digital signature, and requiring successful verification by the public cryptographic key for request processing, with optional machine learning model compliance checks and decentralized access control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If smart contracts are deployed on blockchain with built-in security, then security capabilities are provided, but developers have minimal control over their applications after publication and cannot protect them if security is not pre-coded
Solution Approach 1:
The patent implements preliminary action by pre-configuring access control policies and cryptographic key pairs during smart contract deployment. The contract includes built-in access control mechanisms that are activated before any potential security threats occur, allowing developers to establish security rules in advance while maintaining the ability to manage access dynamically through the predefined policy framework.
Solution Approach 2:
The patent applies dynamics by enabling dynamic access control policies that can be updated and modified after contract deployment without changing the contract code itself. The system allows runtime adjustments to access permissions, policy rules, and authorized entities through structured updates to the access control configuration, providing adaptability while maintaining security.
2Reliability
If access control policies are implemented for smart contracts, then security against malicious attacks is improved, but system complexity increases due to additional verification steps
Solution Approach 1:
The patent implements self-service by designing an access control system where the smart contract automatically verifies incoming requests against stored policies without requiring external intervention. The contract autonomously checks cryptographic signatures, validates policy conditions, and enforces access rules, reducing the need for complex external verification infrastructure while maintaining security.
Solution Approach 2:
The patent applies universality by creating a standardized access control framework that can be applied to any smart contract through a common interface and policy structure. The system uses universal cryptographic verification mechanisms and reusable policy templates that can protect different contracts with varying security requirements using the same underlying infrastructure, reducing overall system complexity.
3Reliability
If cryptographic verification is required for each request, then access control security is enhanced, but processing time increases due to signature generation and verification
Solution Approach 1:
The patent implements partial action by applying cryptographic verification selectively based on policy conditions rather than uniformly to all requests. The system evaluates access policies first and only requires cryptographic signature verification when explicitly mandated by the policy, allowing requests that meet alternative authentication methods or trusted entity criteria to bypass heavy cryptographic checks, thus reducing average processing time while maintaining security where needed.
Data Source
AI summary
An access control server may store a private cryptographic key. The private cryptographic key corresponds to a public cryptographic key. The public cryptographic key is stored on a blockchain as part of an autonomous program protocol. The access control server may receive access control setting related to the autonomous program protocol. The access control server may receive a request for accessing the autonomous program protocol stored on the blockchain. The access control server may review the request. The access control server may determine the request is in compliance with the policies specified in the setting. The access control server may create, using the private cryptographic key, a digital signature for the request and generate a response including the digital signature. A successful verification of the digital signature using the public cryptographic key stored in the autonomous program protocol is required by the autonomous program protocol to process the request.