CRYPTO : Dmitrii Koshelev (LMV UVSQ) : Hashing to elliptic curves y^2 = x^3 + b provided that b is a quadratic residue.
Bâtiment Descartes, salle 301Let Fq be a finite field and E_b : y^2 = x^3 + b be an ordinary elliptic Fq-curve of j-invariant 0 such that sqrt(b) is in Fq. In particular, this condition is fulfilled for the curve BLS12-381 and for