Secure Element Signature Validation for Quantum-Resistant Hash Trees
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Solution Overview
Problem
Existing secure element platforms are vulnerable to quantum computing attacks, compromising the security of digital signature operations, particularly in environments with limited computational resources.
Innovation Solution
Implementing hash-based signature protocols within secure element platforms, utilizing incremental hashing processes to generate and validate quantum-resistant digital signatures, ensuring one-time use of key pairs and maintaining security without excessive resource consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional digital signature operations are implemented in secure element platforms, then message authenticity and integrity are ensured, but the system becomes vulnerable to quantum computing attacks
Solution Approach 1:
The patent transitions from traditional cryptographic algorithms (RSA, ECDSA) to hash-based signature algorithms (HBS), fundamentally changing the cryptographic parameter space. This algorithmic paradigm shift provides quantum resistance while maintaining digital signature functionality in secure element platforms, directly addressing the vulnerability to quantum computing attacks
2Object-affected harmful factors
If quantum-resistant hash-based signature protocols are implemented, then resistance to quantum computing attacks is achieved, but computational resource consumption increases
Solution Approach 1:
The patent segments the HBS operation into distinct phases: key pair generation, message digest generation, and signature generation. Each phase is optimized independently for resource-constrained environments, allowing selective execution and efficient resource management while maintaining quantum resistance
Solution Approach 2:
The patent implements incremental hashing where the message digest is generated progressively rather than all at once. This partial action approach allows the system to process data in manageable chunks, reducing peak computational resource consumption while still achieving the full security benefit of quantum-resistant signatures
3Object-affected harmful factors
If hash-based signature protocols with one-time key pairs are implemented, then quantum resistance is achieved, but key management complexity increases
Solution Approach 1:
The patent generates and stores multiple key pairs in advance during secure element initialization, before they are needed for signing operations. This preliminary action eliminates the need for complex real-time key generation and management during operation, simplifying the key management process while maintaining the one-time use security model
Solution Approach 2:
The patent treats each key pair as a disposable, single-use credential. After a key pair is used to generate a signature, it is immediately discarded and never reused. This approach simplifies key management by eliminating the need for complex key rotation, revocation, or expiration handling, while maintaining strong security through the one-time use property
Data Source
AI summary
One or more embodiments initialize a signature validation object in a secure element (SE) platform runtime environment and utilize the signature validation object to perform signature validation operations. A system accesses an authentication path that includes a set of hash values corresponding to a set of nodes of a tree structure associated with a hash-based signature protocol utilized to generate a digital signature. The system computes a root hash value corresponding to a root node of the tree structure based on the set of hash values of the authentication path. The system verifies the root hash value against a root public key associated with the digital signature. The system determines that the digital signature is valid responsive at least in part to successfully verifying the root hash value against the root public key.