Refactring FIPS_escda_sign() for OpenSSL 3.0.0

[Kory Hamzeh]

Hi,

I am upgrading some 3RD party code which performs FIPS ECDSA AVS testing for 
FIPS 140-2 certification. The code uses FIPS_escda_sign(), which in 
Openssl-fips-2.0.5 is define as:

ECDSA_SIG * FIPS_ecdsa_sign(EC_KEY *key,
                        const unsigned char *msg, size_t msglen
,                       const EVP_MD *mhash)


The full code is here:

https://github.com/majek/openssl/blob/master/fips/ecdsa/fips_ecdsavs.c

I have read through all of the ECDSA sign man pages, and I cannot find a 
functions that is close to accepting some of the same parameter. I could use 
some help please. I have very little experience with ECDSA.

Thanks,
Kory