This crate contains bindings to the C implementations of the following schemes, from PQClean.
frodokem640shake - cleanfrodokem640aes - cleanfrodokem976aes - cleanfrodokem976shake - cleanfrodokem1344aes - cleanfrodokem1344shake - cleanFrodo needs a lot of stack space, specify env variable RUST_MIN_STACK to make sure it has
enough stack space in threads.