SOUMYA, L; VAMSI KRISHNA, BS. Multi Keyword Search Within An Encrypted Text Using Tf-Idf Based Trapdoor Function. International Journal of Computer Sciences and Engineering, [S. l.], v. 6, n. 4, p. 409–414, 2025. DOI: 10.26438/ijcse/v6i4.409414. Disponível em: https://ijcse.isroset.org/index.php/j/article/view/2228. Acesso em: 2 feb. 2026.