TY JOUR TI Improving Privacy in Educational Data: Developing an Anonymization Algorithm Using AES/GCM and Mixing Methods KW depersonalization of personal data KW anonymization KW information security KW cryptography KW AES/GCM KW PBKDF2 KW HMAC KW SHA‑256 KW Base64 KW mixing method KW a method of changing composition or semantics JO Bulletin of scientific research results AU Eshenko, R.A. AU Zvereva, E.V. AU Dobrosel'skaya, E.S. AU Chuyko, O.I. AU Novak, Y.D. PY 2026 IS 2026 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"