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kybe-rs is a Pure Rust implementation of the CRYSTALS-KYBER lattice-based key encapsulation suite (KYBER 1), a post-quantum candidate submitted to the NIST standardization process 2.

The CRYSTALS-KYBER submission already comes with reference implementations, including optimised versions and as made through the 3rd round of NIST standardization process.

kybe-rs is concerned with providing high correctness guarantees: adherence to the CRYSTALS-KYBER specification, memory and type safety, and reproducibility across platforms. Extensive testing and documentation is desired. Performance matters but is a longer-term concern.

• Key encapsulation mechanism (KEM)
• Public-key encryption (PKE)
• All the parameters described in the NIST submission: kyber-512 and kyber-768.

The 2nd round updated specification (30 march 2019) is used as a basis for implementation.

• The implementation is not guaranteed to be constant time
• The implementation is not no_std compatible (for non-essential reasons)

Benchmarks with criterion:

cargo bench

Profiling with flamegraph:

cargo flamegraph --example file [-o name.svg]

For any file.rs in the examples folder.

• https://pq-crystals.org/kyber/
• https://csrc.nist.gov/Projects/Post-Quantum-Cryptography