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Embedded curve over the Ristretto255 scalar field, for use in Bulletproofs

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dalek-cryptography/doppio

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doppio

Work-in-progress repo for an embedded curve over the ristretto255 scalar field, for use in Bulletproofs.

Sean Bowe previously suggested an alternate curve (cf https://twitter.com/ebfull/status/1087571257057406976), but for the reasons described in the notes we prefer a slightly different set of parameters.

Goals

Eventually, this repo aims to construct "doppio", a parameterization of Ristretto that can be implemented using an embedded curve defined over the scalar field of the ristretto255 group. This provides a prime-order group that can be efficiently implemented inside a Bulletproof.

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Embedded curve over the Ristretto255 scalar field, for use in Bulletproofs

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