Wesley A. Clark, Made Computing Personal, Dies at 88
Breaking Symmetric Cryptosystems using Quantum Period Finding, by
Marc Kaplan, Gaëtan Leurent, Anthony Leverrier, and María Naya-Plasencia.
“In this paper, we consider attacks where an adversary can query an
oracle implementing a cryptographic primitive in a quantum
superposition of different states. … ]e e show that the most widely
used modes of operation for authentication and authenticated
encryption (e.g. CBC-MAC, PMAC, GMAC, GCM, and OCB) are completely
broken in this security model.”
A Natural Prime-Generating Recurrence, by Eric S. Rowland (2008).
“For the sequence defined by a(n) = a(n-1) + gcd(n,a(n-1)) with a(1) =
7 we prove that a(n) - a(n-1) takes on only 1’s and primes, making
this recurrence a rare ‘naturally occurring’ generator of primes.”
Passive Wi-Fi: Bringing Low Power to Wi-Fi Transmissions
Cool Graphs of Implicit Equations, nifty.
Keepalive, permanent outdoor installation by Aram Bartholl.
Weanarisch Wiad Wödsproch im World Wide Web
The MetaFilter gopher server is back
Quotation marks in Europe