[ExI] why do we need them?

Eugen Leitl eugen at leitl.org
Mon Aug 5 08:53:52 UTC 2013

On Sun, Aug 04, 2013 at 12:03:32PM -0700, TwentFirstCentury Matters wrote:

> what is cryptography all about, anyway?

Cryptography is an essential feature in an untrusted
world. Consider financial transactions, or implementation
of a global currency like BitCoin. 

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