Blockchain Hash One-Time Password Authentication
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Solution Overview
Problem
Existing authentication methods using static passwords and one-time passwords (OTPs) are susceptible to eavesdropping and replay attacks due to predictable moving factors, such as counter values and time-based increments, which compromise security.
Innovation Solution
The use of a current blockchain hash value as a moving factor for generating secure tokens, combined with multi-factor authentication, provides enhanced security by utilizing an unpredictable sequence and storing authentication records in the blockchain to render tokens obsolete after use, creating a tamper-proof audit trail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If predictable moving factors (counter values, time-based increments) are used in OTP generation, then the authentication system is easier to implement, but the security is compromised due to susceptibility to eavesdropping and replay attacks
Solution Approach 1:
The patent changes the moving factor from predictable parameters (counter values, time-based increments) to unpredictable blockchain hash values. This parameter change resolves the contradiction by maintaining security while using a different computational approach that doesn't increase system complexity
Solution Approach 2:
The patent introduces blockchain as an intermediary component to generate the moving factor for OTP authentication. The blockchain's unpredictable hash values serve as a mediator between the authentication system and the security requirements, eliminating the need for complex predictive algorithms while enhancing security
2Ease of operation
If static passwords are used for authentication, then the system is simpler to operate, but the security is weakened due to replay attacks
Solution Approach 1:
The patent transforms the static password system into a dynamic authentication system by incorporating blockchain-based one-time passwords. Each authentication uses a unique, unpredictable hash value that changes with each blockchain block, making the system dynamic while maintaining ease of operation through automated token generation
3Reliability
If blockchain hash values are used as moving factors, then the unpredictability and security are improved, but the device complexity increases due to blockchain integration
Solution Approach 1:
The blockchain network serves itself to generate the moving factors through its inherent consensus mechanism and block creation process. The authentication system doesn't need complex algorithms to generate unpredictable values - it simply retrieves hash values that the blockchain generates autonomously, reducing the complexity burden on the authentication system
Data Source
AI summary
Techniques for authentication using a blockchain hash value as a moving factor. The techniques include retrieving, by an authenticating device and from a blockchain, a current hash value of the blockchain, where the authenticating device and an authenticator server share a secret key value and each have access to the blockchain. The techniques further including generating, by the authenticating device, a secure token based on the secret key value and the current hash value. The techniques further including transmitting the secure token to the authenticator server and receiving an indication of authentication from the authenticator server.