[Cryptography] Darpa wants a secure messaging app based on blockchains
John Levine
johnl at iecc.com
Wed Apr 27 17:19:42 EDT 2016
>As for classification ... this one looks to me like an engineering project more than a research product. The basic techniques are all out there - it's
>a matter of putting them to use toward a particular end. *Maybe* there's a need for something new for scalability; maybe not. If they classify it,
>someone else can do the same work.
How do you do expiring messages without a central server? I'd think
that once the data is in a blockchain, you're not going to make it go
away without unrealistic assumptions about the endpoint devices.
R's,
John
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