Method for deriving a partial signature with partial verification

ChangeBridge: Patent Grants - Networking (H04L)

Published April 7th, 2026

Detected April 8th, 2026

Summary

USPTO granted patent US12598076B2 to Orange for a method of deriving a partial cryptographic signature for a subset of messages. The invention generates anonymized signature elements and verification elements allowing selective message subset verification while maintaining signature integrity.

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What changed

USPTO issued Patent No. US12598076B2 to Orange and inventor Olivier Sanders covering a method for deriving partial cryptographic signatures. The method enables verification of a subset of messages from a larger set using only a constant number of signature elements, including anonymized elements and verification components. The patent includes 13 claims directed to the cryptographic signature derivation and verification process.

For Orange, this patent strengthens their intellectual property portfolio in cryptographic communications and may provide enforcement rights against competitors implementing similar partial signature verification methods. Third parties developing cryptographic systems should review this patent to ensure their products do not infringe upon the disclosed claims.

What to do next

Monitor for potential infringement by competitors using similar partial signature methods
Evaluate patent for licensing opportunities

Source document (simplified)

← USPTO Patent Grants

Method for deriving a partial signature with partial verification

Grant US12598076B2 Kind: B2 Apr 07, 2026

Assignee

ORANGE

Inventors

Olivier Sanders

Abstract

A method for deriving a partial signature for a subset of a set of messages. The method includes: receiving the set of messages and a signature of the set, which includes signature elements of the set; generating anonymized elements of the signature; generating a first verification element from messages other than those of the subset; generating a second verification element to prove the first verification element is well formed; and sending, to a verification entity, a partial signature specific to the subset. The partial signature includes a constant number of elements having at least the elements of the signature of the set of anonymized messages, the first verification element and the second verification element. The partial signature is verifiable with only the messages of the subset of messages. The second verification element is a function of derived values calculated from at least the other elements of the partial signature.