MPC Wallet Share Conversion Methods Using LWE-Based Graded Encoding
Summary
USPTO published patent application US20260099838A1 for MPC wallet share conversion methods. Inventors Vipin Singh Sehrawat disclose systems using LWE-based graded encoding for multiplicative to additive secret conversions in multi-party computation protocols. The application covers cryptographic operations enabling secure MPC wallet functionality for digital asset management.
What changed
USPTO published patent application US20260099838A1 disclosing novel methods for multiplicative to additive share conversions in MPC wallet protocols using lattice-based (LWE) graded encoding schemes. The invention enables parties to perform secure cryptographic operations by generating graded encodings for secret values, computing products across LWE instances, and inverting instances to derive additive secret shares for wallet operations.
Inventors and companies developing cryptographic wallet solutions, blockchain custody services, or MPC-based security systems should monitor this application for potential licensing implications. While patent prosecution may take years, the disclosed methods represent advances in privacy-preserving computation that could affect competitive positioning in digital asset custody and multi-party key management solutions.
What to do next
- Monitor for patent grant status
- Review claims for competitive implications if operating in cryptographic wallet space
- Evaluate need for license negotiations upon patent grant
Archived snapshot
Apr 9, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
SECURITY AND EFFICIENCY FOR MULTI-PARTY COMPUTATION WALLETS
Application US20260099838A1 Kind: A1 Apr 09, 2026
Inventors
Vipin Singh Sehrawat
Abstract
Methods, systems, and apparatus for multiplicative to additive share conversions in MPC wallet protocols. In one aspect, a first party generates a graded encoding for a first secret value using a first LWE instance that comprises the first secret value. The first party receives a graded encoding for the second secret value from a second party in possession of a second secret value. The first party computes a product of: the graded encoding for the second secret value, the graded encoding for the first secret value, and a first public matrix generated by or assigned to the first party, where the product comprises a second additive secret value and forms a second LWE instance. The first party inverts the second LWE instance to compute a first additive secret value. The first party performs a cryptographic operation in an MPC wallet protocol using the first additive secret value.
CPC Classifications
G06Q 20/3674 G06Q 20/3678 H04L 9/0816 H04L 9/0838
Filing Date
2025-11-14
Application No.
19390443
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