Re: a few questions about AES


Antony Clements wrote:
does AES have a physical file size limit?

if so what is the limit?


Not a hard limit, no, but there are only 2^128 possible blocks, so
after that much it is pretty sure to repeat itself, thus it would start
losing security. Due to the famous birthday phenomenon, on average it
will probably start repeating after only 2^64 blocks, which is 2^68
bytes or 295,147,905,179,352,825,856 bytes. For comparison, Google's
server farm only holds around 5,625,000,000,000,000 bytes, or about one
52,470th of that.

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