sctp_set_key
new_skey->key = sctp_set_key(skey->key->key, skey->key->keylen);
extern sctp_key_t *sctp_set_key(uint8_t *key, uint32_t keylen);
key = sctp_set_key(sca->sca_key, (uint32_t)size);
key = sctp_set_key(sca->sca_key, (uint32_t)size);
key = sctp_set_key(sca->sca_key, (uint32_t)size);