crypto_spawn_aead
aead = crypto_spawn_aead(spawn);
cipher = crypto_spawn_aead(spawn);
aead = crypto_spawn_aead(&ictx->u.aead_spawn);
aead = crypto_spawn_aead(spawn);
aead = crypto_spawn_aead(spawn);
child = crypto_spawn_aead(aead_instance_ctx(inst));
cipher = crypto_spawn_aead(&ictx->spawn);