[Interest] TLS/SSL XML encryption security

[Thiago Macieira]

On segunda-feira, 7 de outubro de 2019 07:06:07 PDT Roland Hughes wrote:
> We now
> have the storage and computing power available to create the database or
> 2^128 database tables if needed.

Do you know how ludicrous this statement is?

Let's say you had 128 bits for each of the 2^128 entries, with no overhead, 
and each bit weighed 1 picogram (a 8 GB RAM DIMM weighs 185 g, which is 21 ng/
byte). You'll need a storage of 4.3 * 10^25 kg, or about 7.3 times the mass of 
the Earth.

Let's say that creating such a table takes an average of 1 attosecond per 
entry, or one million entries per nanosecond. Note I'm saying your farm is 
producing 10^18 entries per second, reaching at least 1 exaflops, producing 
about 16 exabytes per second of data. You'll need 10 trillion years to 
calculate.

The only way this is possible is if you significantly break the problem such 
that you don't need 2^128 entries. For example, 2^80 entries would weigh 
"only" 155 million tons and that's only 16 yottabytes of storage, taking only 
14 days to run in that magic[*] farm, with magic connectivity and magic 
storage.

[*] After applying Clarke's Third Law.
-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel System Software Products