Credential Binding to Sector Identifiers Prevents Swapping Attacks
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Solution Overview
Problem
Conventional access control systems are vulnerable to swapping attacks, where compromised users or devices can swap credentials to gain unauthorized access, leading to exposure of sensitive information and unauthorized access rights.
Innovation Solution
The system establishes a secure communication session between an access control device and a user device, using a certificate to verify and bind credentials to a specific sector identifier, ensuring that only authorized credentials are transmitted and used for access control, thereby preventing swapping attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional access control systems transmit credentials without binding to sector identifiers, then ease of operation is improved, but security is worsened due to swapping attacks
Solution Approach 1:
The system performs preliminary binding of credentials to sector identifiers before credential transmission. The access control reader binds the credential to its sector identifier in advance, ensuring that even if credentials are intercepted, they cannot be used with other readers. This preliminary action prevents swapping attacks while maintaining ease of operation.
Solution Approach 2:
The patent introduces sector identifiers as an intermediary element that mediates between credentials and access control readers. The credential is bound to the sector identifier, which then matches with the reader's sector identifier. This intermediary mechanism ensures credentials are used only with authorized readers without complicating the overall operation.
2Reliability
If credentials are bound to sector identifiers, then security is improved, but device complexity is worsened
Solution Approach 1:
The patent merges the credential and sector identifier into a single bound credential structure. Instead of treating them as separate entities requiring separate management, the credential is combined with the sector identifier through binding operations. This merging reduces device complexity by eliminating the need for separate credential and sector management systems.
Solution Approach 2:
The bound credential serves multiple functions: it acts as both an authentication credential and a sector-specific authorization token. The same bound credential structure is used for both proving identity and verifying sector compatibility, reducing the need for additional security mechanisms and simplifying device implementation.
3Reliability
If verification of issuer signatures is performed, then security is improved, but loss of time is worsened
Solution Approach 1:
The system performs preliminary verification of the issuer signature on the credential during the credential issuance phase. By verifying the signature upfront when the credential is created and bound to the sector identifier, the system eliminates the need for repeated verification during access control operations, thus reducing time loss while maintaining security.
Solution Approach 2:
The patent replaces complex cryptographic verification mechanisms with simpler bound credential comparisons. Instead of performing full signature verification during each access attempt, the system uses pre-verified bound credentials that can be quickly validated by comparing sector identifiers, substituting heavy cryptographic operations with lighter comparison operations.
Data Source
AI summary
Methods and systems for protecting user credentials from swapping attacks are provided. The methods and systems establish, between a first device and a second device, a communication session and receive, by the second device from the first device, a certificate associated with the first device. The methods and systems obtain credential selection information from the certificate associated with the first device and transmit a credential corresponding to the credential selection information from the second device to the first device.