Dy, R. B., Larida, M. J. A., & Tanguilig, B. T. (2013). e-DoX:DEPED Student Grade Records Management System with Implementation of Advanced Encryption Standard and PKI Infrastructure. International Journal of Sciences: Basic and Applied Research (IJSBAR), 11(1), 112-158. https://gssrr.org/JournalOfBasicAndApplied/article/view/1252