A New Septupling Point 7P Arithmetic Formula for LD Coordinate and Affine Over Binary Elliptic Curve Cryptosystem. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 18, n. 2, p. 5659, 2025. DOI: 10.29020/nybg.ejpam.v18i2.5659. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/5659. Acesso em: 5 dec. 2025.