Signed API Headers With Timestamp Checks for Network Access Control
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Solution Overview
Problem
Network communications are vulnerable to cybercrimes, such as malware attacks, phishing, and ransomware, which compromise private information and disrupt system operations, leading to resource wastage in mitigation efforts.
Innovation Solution
Implementing a cyber security service provider's control infrastructure that uses optimized header information, including a signature header signed with a manager private key and a timestamp header, to authenticate requests and ensure authorized access, thereby preventing unauthorized access and protecting sensitive data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional network communication protocols are used without optimized header information, then network compatibility and ease of operation are maintained, but network security and protection against cybercrimes deteriorate
Solution Approach 1:
The header information is segmented into distinct functional components: a signature header containing cryptographic authentication data, a timestamp header for temporal validation, and action description headers for request specification. This segmentation allows each component to perform its specific security function independently while maintaining overall protocol compatibility
Solution Approach 2:
The manager device performs preliminary cryptographic actions by signing the request message with its private key before transmission. The signature header is prepared in advance containing the digital signature, enabling the infrastructure device to authenticate the request without requiring complex real-time verification protocols
2Reliability
If signature headers with digital signatures are implemented for authentication, then unauthorized access is prevented, but processing time and computational resources increase
Solution Approach 1:
The infrastructure device performs partial verification by checking the timestamp header to determine if the request is within the valid time window before performing full cryptographic signature verification. This partial check filters out obviously invalid requests, reducing the computational burden and time for legitimate request processing
Solution Approach 2:
The signature header contains a signature version parameter that enables different verification algorithms or validation strictness levels. By changing the signature version, the system can optimize between security rigor and processing speed based on operational requirements
3Reliability
If timestamp headers with predetermined duration limits are used, then replay attacks are prevented, but network synchronization requirements and system complexity increase
Solution Approach 1:
The timestamp header acts as an intermediary mechanism between the manager device and infrastructure device for temporal validation. Instead of requiring direct complex time synchronization protocols, the timestamp serves as a portable temporal credential that can be verified against the current time, simplifying the synchronization requirement to basic clock comparison
Solution Approach 2:
The system uses a predetermined duration threshold that is intentionally longer than the maximum expected network latency or clock drift. This excessive time window ensures that legitimate requests are not rejected due to minor timing variations, while still preventing replay attacks that occur outside the acceptable timeframe
4Measurement precision
If optimized header information with multiple validation fields is implemented, then access control precision is improved, but ease of operation and implementation difficulty worsen
Solution Approach 1:
The signature header structure is designed to be universal and compatible with standard cryptographic libraries and protocols. By using widely-supported digital signature algorithms and formats, the implementation leverages existing tools and expertise, reducing the difficulty of implementation while maintaining high access control precision through multiple validation fields
Data Source
AI summary
A method determining, by a manager device that is responsible for managing network services provided by an infrastructure device, a manager request including (i) action description information that indicates an action to be performed by the infrastructure device, and (ii) path information that indicates an API to be utilized by the infrastructure device to enable performance of the action; transmitting, by the manager device to the infrastructure device, the manager request to request performance of the action; and receiving, by the manager device from the infrastructure device, an authorization message indicating successful authorization of the manager request, whereby indicating performance of the action, wherein the successful authorization is based at least in part on a verification that a time difference between a point in time when the manager request was determined and a current time satisfies a predetermined duration of time is disclosed. Various other aspects are contemplated.