SMB_CHALLENGE_SZ
negprot->ni_keylen = SMB_CHALLENGE_SZ;
bcopy(&session->challenge_key, negprot->ni_key, SMB_CHALLENGE_SZ);
uint8_t tmp_key[SMB_CHALLENGE_SZ];
(void) random_get_pseudo_bytes(tmp_key, SMB_CHALLENGE_SZ);
bcopy(tmp_key, &session->challenge_key, SMB_CHALLENGE_SZ);
session->challenge_len = SMB_CHALLENGE_SZ;
unsigned char challenge_key[SMB_CHALLENGE_SZ];