AES-CCM encrypted Mirage Mirage_block.S storage
uses two sectors of the underlying Mirage_bloc.S per provided sector:
+-----------------------------------+
| CT | nonce | adata |
+-----------------+-----------------+
| sector n | sector n+1 |
+-----------------+-----------------+CT is sector_size + maclen bytes AES-CCM ciphertextnonce is nonce_len bytes random nonceadata is sector_size - nonce_len - maclen random additional authenticated data