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Shake function or(and) map_to_field for transcript #261

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Valeh2012 opened this issue Jun 10, 2024 · 0 comments · May be fixed by #302
Open

Shake function or(and) map_to_field for transcript #261

Valeh2012 opened this issue Jun 10, 2024 · 0 comments · May be fixed by #302

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@Valeh2012
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Hash2Field algorithm requires either extended message digest or extensible output function (XOF) according to https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-hash-to-curve-11#section-5.4

h2f.hpp already implements expand_message_xmd but not expand_msg_xof, primarily due to no XOF implementation in crypto3 suite. SHAKE is such XOF based on Keccak permutations.
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261 shake function orand map to field for transcript NilFoundation/crypto3
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@Valeh2012