Tag Archives: crypto

“MD5 considered harmful”

That was the name of a paper delivered today at the 25th Annual Chaos Communication Congress in Berlin (summary, PDF). The geeky trope “considered harmful” doesn’t quite convey how serious this is; the equally geeky, equally tropey “be afraid, be very afraid” might’ve been a bit better.
We have identified a vulnerability in the Internet Public [...]

Obfuscated TCP

This seems useful:

Obfuscated TCP is a backwards-compatible modification to the TCP protocol which adds opportunistic encryption. It’s designed to hamper and detect large-scale wiretapping and corruption of TCP traffic on the Internet.
TLS [Transport Layer Security] is the solution to protecting sensitive information. However, there’s room for a low setup cost protocol to protect the bulk [...]

Private-public key history

Steve Bellovin’s “Prehistory of Public Key Cryptography” (08-01-16) says the technique was developed several years earlier than thought—and, according to former NSA Director Bobby (Ray) Inman, “a decade earlier than Diffie and Hellman,” possibly inspired by “a World War II–era paper by an unknown person at Bell Labs.”

In a talk “The Early Days in Nuclear [...]