TriFHE progress stalls as existing FHE schemes already use dense ternary secrets
fractalmoto · x · 2026-10-30
Developer fractalmoto published a security progress self-review on TriFHE (adapting FHE to run in a native ternary VM), admitting the work has stalled: existing FHE schemes already use dense ternary secrets, making direct adaptation redundant unless ternary-compatible cyclotomic polynomials are explored — an avenue he suspects may introduce vulnerabilities. He also open-sourced an estimator-harness that plugs declared TriFHE parameters into the official lattice-estimator, emitting signed JSON audit records, with the principle that raw keyspace is not security — the real level is the cost of the cheapest known attack on the specific LWE/RLWE instance. Commenters pressed for benchmarks on the claimed 2.77× compression and an independent security review.
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