Storage Device Diagnostic Interface Authentication via Cryptographic Nonce
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Solution Overview
Problem
Current methods for securing access to diagnostic interfaces in storage devices are inadequate, as they often rely on physical presence and special-purpose circuit boards, lacking robust authentication mechanisms to prevent malicious access.
Innovation Solution
Implementing an asymmetric diagnostic unlock mechanism using public-private key infrastructure, where a system seeking access to the diagnostic interface obtains a cryptographic challenge from the storage device, which is then signed by an authorized unlock system and verified using a trusted certificate authority, ensuring secure access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical presence and special-purpose circuit boards are used to secure diagnostic interface access, then access control is provided, but the security is insufficient against malicious software attacks and the device complexity increases
Solution Approach 1:
The patent replaces the mechanical/physical access control system (special-purpose circuit boards with additional pins) with a cryptographic authentication system using public-private key infrastructure. The diagnostic interface is protected by requiring cryptographic proof of authorization rather than physical presence of special hardware pins.
Solution Approach 2:
The patent changes the security parameter from physical presence detection to cryptographic verification. Instead of detecting physical connection of special pins, the system verifies cryptographic signatures and authentication tokens to determine authorized access.
2Ease of operation
If additional diagnostic access pins are provided on the storage drive interface, then diagnostic access is enabled, but vulnerability to denial of service attacks increases
Solution Approach 1:
The patent applies preliminary anti-action by implementing authentication requirements before allowing diagnostic interface access. The system preemptively verifies cryptographic credentials and authorization tokens before enabling any diagnostic commands, preventing malicious software from exploiting the interface.
Solution Approach 2:
The patent introduces cryptographic authentication mechanisms as an intermediary between the diagnostic interface and accessing systems. This intermediary layer verifies authorization credentials and blocks unauthorized access attempts, including malicious software attacks.
3Reliability
If special-purpose electronic circuit board with extra pins is used, then diagnostic access is restricted to physical presence, but the ease of operation in remote environments deteriorates
Solution Approach 1:
The patent makes the diagnostic interface universally accessible through cryptographic authentication rather than requiring special-purpose hardware. The same diagnostic interface can be accessed remotely or locally, from production environments or field operations, as long as proper authentication credentials are presented.
Solution Approach 2:
The patent replaces the mechanical constraint of physical presence (special pins on circuit board) with a cryptographic authentication system that enables remote access. The authentication mechanism works over standard communication interfaces without requiring special physical connections.
Data Source
AI summary
Provided are an apparatus, system, and method authenticating a system to access diagnostic interface in a storage device. The storage device includes a computer readable storage medium implemented to store data and a controller. The controller receives a request from the computer system to initiate a cryptographic nonce to access diagnostic interface in the storage device. The controller generates a nonce and returns to the computer system. Upon receiving an unlock request from the computer system to access the diagnostic interface including a signed nonce comprising at least the nonce encrypted with a private key by the authorized unlock system, the controller uses a public key that is a cryptographic pair with the private key to decrypt the signed nonce to determine whether to grant the computer system access to the diagnostic interface in the storage device.