Machine-checked ZKP for NP-relations: Formally Verified Security Proofs and Implementations of MPC-in-the-Head. - José Bacelar Almeida; Manuel Barbosa; Manuel L. Correia; Karim Eldefrawy; Stéphane Graham-Lengrand; Hugo Pacheco 001; Vitor Pereira 002 (IACR Cryptol. ePrint Arch., 2021)