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IACR Cryptology ePrint Archive
Hash-based signatures offer a conservative alternative to post-quantum signatures with arguably better-understood security than other post-quantum candidates. Nevertheless, a major drawback that makes it less favorable to deploy in practice is the (relatively) large size of the signatures, and long signing and verification time. In this paper, we introduce SPHINCS-α, a stateless hash-based signature scheme, which benefits from a twofold improvement. First, we provide an improved Winternitzdblp:journals/iacr/ZhangCY22 fatcat:sjneny7f5rau3newbiy44522i4