rsa key validation test and additions to rsa fromdata test

[sebastian-carpenter]

Adding tests for rsa key validation as well as adding some more cases to the rsa fromdata test.

Bugs:

• WP segfaults when NULL is provided for param->data field (fixed)
• General failure of rsa key validation (mostly fixed)
  • public key should have a few other tests
• WP accepts any type of parameter value for rsa fields (fixed)
• Storing param->data value: OSSL accepts negative values, so changed WP to accept negative values but store them as 0.

Additions (these are bugs too though):

• Prime check in wp_rsa_validate against 133 primes.
• The 'selection' variable used for rsa key importing was mostly unused, added section to make use of it.
  • This is to follow OSSL's implementation closer. Involved checking for D param, not just N and E.
• No param may have more bits than the modulus.
• Added checks that all CRT parameters are provided.
  • These checks vary between OSSL versions

Problems?

• Should negative values be stored as 0? OSSL stores them as a negative and fails later but WP must store these values as unsigned.

[SparkiDev]

Can you not use mp_prime_is_prime() with 0 trials?

[sebastian-carpenter]

That would fail before it tests primes because you can't have 0 trials (as far as I know).
OpenSSL does 5 rounds of miller-rabin anyway so I'd like to use mp_prime_is_prime() but I get different results between OpenSSL and wolfProvider.