*** Sergey Matveev [2020-12-30 22:10]:
>Problem with streaming is that you do not know exact file size in
>advance, that is written in the beginning of the first encrypted block.

Actually it is not stored in the first block, but just preceedes it. So
"size" is just a 64-bit ciphertext + 128-bit MAC tag. So we do not have
to store that 128KiB of data, just only the 64-bit size.

-- 
Sergey Matveev (http://www.stargrave.org/)
OpenPGP: CF60 E89A 5923 1E76 E263  6422 AE1A 8109 E498 57EF