HMACT64
HMACT64(v2hash, v1hash, NTLM_HASH_SZ,
HMACT64(rhash, v2hash, NTLM_HASH_SZ, data, dlen);
HMACT64(ssn_key, v2hash, NTLM_HASH_SZ, ntresp, NTLM_HASH_SZ);
HMACT64(kxkey, ssn_key, NTLM_HASH_SZ,