Digital Asset Vault with Layered Encryption for Mnemonic Transfer

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Solution Overview

Problem

Existing methods for securing digital assets, such as crypto wallet mnemonics and confidential information, are vulnerable to theft or loss due to inadequate security measures, particularly when stored in cold storage or written down physically.

Innovation Solution

A system employing multiple encryption layers, including Elliptic Curve Diffie Hellman Ephemeral (ECDHE), RSA-OAEP, and Post-Quantum Cryptography (PQC), along with hardware secure modules (HSM) to encrypt and decrypt data, and secure storage techniques to encrypt and decrypt data, ensures secure transport and storage of secrets, using cryptographic mechanisms to encrypt and decrypt data, and secure storage in databases, and secure devices, and secure devices, and secure storage in hardware secure modules (HSMs) to protect digital assets.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If data is stored in cold storage or written down physically, then accessibility is improved, but security deteriorates due to vulnerability to theft or loss

Engineering Contradiction:

ImproveaccessibilityVSAvoidsecurity

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces physical storage mechanisms (cold storage, paper records) with a digital encryption system. Data is encrypted using multiple cryptographic layers (ECDHE, RSA-OAEP, PQC) and stored in digital vaults, eliminating the need for physical storage while enhancing both accessibility and security.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent implements nested encryption where data is encrypted multiple times using different cryptographic algorithms. Each encryption layer protects the previous layer, creating a nested structure of encrypted data that must be systematically decrypted to access the original information.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Reliability

If multiple encryption layers are applied to data, then security is improved, but processing complexity increases

Engineering Contradiction:

ImprovesecurityVSAvoidprocessing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the encryption process into distinct, modular stages using different cryptographic algorithms (ECDHE for key exchange, RSA-OAEP for encryption, PQC for post-quantum security). Each encryption layer operates independently and can be managed separately, reducing the complexity of implementing and maintaining the overall system.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250390862A1Digital asset vault

Publication Date: 2025.12.25 WELLS FARGO BANK NA

AI summary

Securing digital assets in a vault that interfaces with multiple different third-party wallets to store keys/mnemonics. The vault interface accepts input from multiple different party wallets to combine multiple encryptions and secure storage techniques. Numerous cryptographic mechanisms are employed to securely pull a mnemonic phrase from a third-party wallet and into an institution's vault. A customer's mnemonic phrase is securely transported from a personal wallet into a secured institution's encrypted vault using the power of HSM to encrypt and decrypt a customer's mnemonic phrase securely.