P. Vamshi Krishna, Chinthala Sahithya, Bandari Manohar, Dandu Abhinaya Sri. Data Shield Vault: A Secure Exchange Framework Combining MFA, RSAAES Hybrid Cryptography, and SHA-256-Based Integrity with Role Logging. AJACCM. 2026;6(2):510-517. doi:10.64751/ajaccm.2026.v6.n2.pp510-517