Putri MCI, Sukarno P, Wardana AA. Two factor authentication framework based on ethereum blockchain with dApp as token generation system instead of third-party on web application. regist. j. ilm. teknol. sist. inf. [Internet]. 2020 Jun. 3 [cited 2024 May 16];6(2):74-85. Available from: https://mail.journal.unipdu.ac.id/index.php/register/article/view/1932