FrodoKEM is a post-quantum cryptographic key encapsulation mechanism (KEM) that emphasizes conservative security by relying on the Learning With Errors (LWE) problem over generic, unstructured lattices. This approach contrasts with other lattice-based schemes that utilize structured lattices to enhance efficiency. While FrodoKEM's design offers robust security assurances, it comes with trade-offs in performance and key sizes.

In the National Institute of Standards and Technology's (NIST) Post-Quantum Cryptography Standardization project, FrodoKEM advanced to the third round as an alternate candidate but was not selected for standardization. NIST cited its relatively lower performance compared to other candidates as a primary reason for this decision.

Despite not being standardized by NIST, FrodoKEM has garnered recognition from various international bodies. The German Federal Office for Information Security (BSI) has recommended FrodoKEM for post-quantum confidentiality, highlighting its high security margin against future attacks. Additionally, the International Organization for Standardization (ISO) is considering FrodoKEM for inclusion in the next revision of the ISO/IEC 18033-2 Encryption Algorithms document.

FrodoKEM's conservative approach to post-quantum security makes it a noteworthy option for applications where long-term data protection is paramount, and where the trade-offs in efficiency are acceptable.