tipc_aead_key_size
size = tipc_aead_key_size(skey);
skey = kmemdup(aead->key, tipc_aead_key_size(aead->key), GFP_ATOMIC);
tmp->key = kmemdup(ukey, tipc_aead_key_size(ukey), GFP_KERNEL);
nla_len(attr) < tipc_aead_key_size(key))