Benedikt Wagner
Cryptography researcher at the Ethereum Foundation and recent PhD, focused on post-quantum signature schemes, Merkle-tree-based constructions, and SNARK-related encodings used in LeanSig.
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Feb 25, 2026 • 35min
lean Ethereum Part 2: PQ Signatures and Poseidon with Dmitry and Benedikt
Benedikt Wagner, a PhD and cryptography researcher at the Ethereum Foundation focused on post-quantum signatures and Merkle constructions. Dmitry Khovratovich, a symmetric-crypto researcher at the Ethereum Foundation who works on Poseidon and hash-based designs. They discuss leanSig as a post-quantum BLS replacement. Topics include one-time signatures with Merkle trees, size versus verification tradeoffs, SNARK-based aggregation, hypercube encodings, and Poseidon’s role.
