There are 340282366920938463463374607431768211456 possible 128-bit keys. So if y... | Hacker News

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		EliAndrewC on Sept 8, 2013 \| parent \| context \| favorite \| on: Proposal to Change the Default TLS Ciphersuites Of... There are 340282366920938463463374607431768211456 possible 128-bit keys. So if you had a machine that could check a trillion possible keys per second it would take over 10 quintillion years to try all possible 128-bit keys.

repsilat on Sept 9, 2013 [–]

The math: https://www.google.com/search?q=2%5E128+%2F+1E12Hz+in+years

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