This PR sacrifices passing some extra arguments to get rid of the global
state.
* Haraka needs state in all hash calls, this results in changes to the
hash functions specified in `hash.h`. The extra pointers passed would
not be necessary for SHA256 or SHAKE256.
* SHAKE256 did not have global state, but uniformity in the implementations
requires us to pass around the new state context anyway. Otherwise,
@joostrijneveld's SPHINCS+ generator doesn't really work anymore).
We introduce a new header file called `primitive.h` which defines the
required state type for the generic functions. I did not go into
replacing _all_ occurrences of state variables by the new `hash_state`
macro.
There are schemes, like SABER (#192) that have more than one principal
submitter. Consistency warrants that we turn it into a list for all
schemes and don't do something with allowing either a str or a list:
that would just be very annoying to parse.
Closes#194
* fixes dynamic memory allocation test. previously a function called freeze() would trigger it
* this adds DilithiumII. Preprocessor conditionals still need to be removed
* fix ms Makefile
* fix MS compiler warnings
* clean-up
* remove preprocessor conditionals
* add dilithium3
* add dilithium4
* add duplicate consistency checks
* SHA2 state constants in common
* clean up symmetric.h
* Port SPHINCS+-SHA256 to sha256ctx struct
* Implement ctx struct for fips202
* Port Kyber{512,768,1024} to fips202 ctx struct
* Port NewHope to fips202 structs
* Port SPHINCS+-SHAKE256 to fips202 ctx structs
* Use opaque fips202 structs in MQDSS
* port dilithium to use fips202 ctx structs
* include -Wredundant-decls
* remove comment; format NTT constants
* reduce casts in power2round
* fix prototypes for sphincs and static functions in aes.c
* fix missing prototypes in all frodo variants
* fix missing prototypes in kyber
* remove const from non-pointer arguments in Frodo
* add missing prototypes to requirements in README
