Private Set Intersection (PSI)

Private Set Intersection is a cryptographic protocol that allows two parties to compute the intersection of their datasets — without revealing any elements outside of that intersection.

In practice, both you and your partner send encrypted subsets to our secure enclave. The enclave performs the PSI operation, returning only the count and identifiers of matched hashes, never the full list.

We support both hashing‑based PSI (Bloom filters) for large datasets and advanced multi‑party computation for smaller, high‑security jobs. Performance scales linearly, delivering results in seconds even for millions of entries.

This approach offers provable privacy guarantees: you learn only about common customers — and nothing else.