crypto_spawn_cipher
blockcipher = crypto_spawn_cipher(&ictx->blockcipher_spawn);
cipher = crypto_spawn_cipher(spawn);
cipher = crypto_spawn_cipher(spawn);
cipher = crypto_spawn_cipher(spawn);
blockcipher = crypto_spawn_cipher(&ictx->blockcipher_spawn);
cipher = crypto_spawn_cipher(spawn);
cipher = crypto_spawn_cipher(spawn);
tweak = crypto_spawn_cipher(&ictx->tweak_spawn);