Algorithm

Shipovnik

Family: other.

Shipovnik is a code-based signature candidate from Russian researchers, proposed to the Russian standards committee TC26. It converts Stern's identification protocol, which proves knowledge of a low-weight vector for a public syndrome, into a signature with the Fiat-Shamir method and the Streebog hash. Reference code exists in C and Python.

Safety: Low

Why this rating

Stern's identification protocol dates from 1993, but Shipovnik is a recent candidate with little public review. In September 2026 Fireblocks reported a complete forgery against both published verifiers, which never check that a permutation is valid. A verifier with that check is not affected, but no fixed specification has been reviewed.

Standard

https://github.com/QAPP-tech/shipovnik_tc26

Research

• Shipovnik reference implementation for TC26 (QApp)
• Shipovnik designers' Python implementation (Kryptonite)

Implemented by

No libraries listed yet.