IMPLEMENTASI TWO-FACTOR AUTHENTICATION (2FA) BERBASIS LINEAR CONGRUENTIAL METHOD DAN SHA-256 SEBAGAI PENGAMAN DATA MEDIS JANTUNGIN. TRIDI [Internet]. 2026 Jul. 30 [cited 2026 Aug. 5];4(1):28-36. Available from: https://banisalehjurnal.ubs.ac.id/index.php/tridi/article/view/473