Abstract: A method and system for solving the technical problem of incompatibility between end-to-end encryption and artificial intelligence processing by transforming web browser architecture to enable secure AI operations without server-side decryption. The invention implements mandatory header validation (COOP/COEP/HSTS/Origin Isolation), WebAssembly sandboxing with dual-phase import control and signed attestation, bounded plaintext windows (T?1000 ms) with automatic emergency wiping, and NIST SP 800-88 compliant multi-pass memory clearing with XOR verification. GPU acceleration with zero-copy transfer and mandatory clearing achieves practical performance. HMAC audit chains (Hn=HMAC_k Hn?1?event?nonce?timestamp)) provide regulatory compliance verification. Non-extractable keys bound to WebAuthn/FIDO2 ensure user control.

Abstract: A method and system for solving the technical problem of incompatibility between end-to-end encryption and artificial intelligence processing by transforming web browser architecture to enable secure AI operations without server-side decryption. The invention implements mandatory header validation (COOP/COEP/HSTS/Origin Isolation), WebAssembly sandboxing with dual-phase import control and signed attestation, bounded plaintext windows (T?1000 ms) with automatic emergency wiping, and NIST SP 800-88 compliant multi-pass memory clearing with XOR verification. GPU acceleration with zero-copy transfer and mandatory clearing achieves practical performance. HMAC audit chains (Hn=HMAC_k(Hn-1 ? event ? nonce? timestamp)) provide regulatory compliance verification. Non-extractable keys bound to WebAuthn/FIDO2 ensure user control.