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Security analysis of the W-OTS$^+$ signature scheme: Updating security bounds
Matematičeskie voprosy kriptografii, Tome 12 (2021) no. 2, pp. 129-145 Cet article a éte moissonné depuis la source Math-Net.Ru

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We discuss in detail a flaw in the original security proof of the W-OTS${^+}$ variant of the Winternitz one-time signature scheme, which is an important component for various stateless and stateful many-time hash-based digital signature schemes. We update the security proof for the W-OTS${^+}$ scheme and derive the corresponding security level. Our result is of importance for the security analysis of hash-based digital signature schemes. 
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     author = {M. A. Kudinov and E. O. Kiktenko and A. K. Fedorov},
     title = {Security analysis of the {W-OTS}$^+$ signature scheme: {Updating} security bounds},
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     url = {http://geodesic.mathdoc.fr/item/MVK_2021_12_2_a8/}
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M. A. Kudinov; E. O. Kiktenko; A. K. Fedorov. Security analysis of the W-OTS$^+$ signature scheme: Updating security bounds. Matematičeskie voprosy kriptografii, Tome 12 (2021) no. 2, pp. 129-145. http://geodesic.mathdoc.fr/item/MVK_2021_12_2_a8/

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