The pqcrypto crate and the entire pqcrypto-* ecosystem wrap C implementations from PQClean. The PQClean project is being archived in or after July 2026 (see PQClean/PQClean#604), after which no further security patches, algorithm updates, or bug fixes will be applied to the upstream implementations.

As a result, this crate and all dependent crates in the pqcrypto-* ecosystem will no longer receive updates. Users should migrate to actively maintained alternatives. Pure-Rust replacements are available for several algorithms: