Archive for October, 2007

Millionaire’s Problem

Sunday, October 28th, 2007

Lets assume there are two millionaires, named Alice and Bob. Alice and Bob what to know who is richer without revealing how much money either one of them have. This is what is known as the millionaires problem, originally introduced by Andrew Yao [paper link]. Why am I talking about this? […]

CRLF, PHP, Postfix, and SPAM

Sunday, October 21st, 2007

Recently we switched our production machines from running sendmail to postfix. In this process our emails started getting caught as SPAM and it took a bit of digging to figure out what exactly was happening. The error we got was:
BAD_HEADER: Improper use of control character (char 0D hex)
If you look up 0D hex […]

I like Neil Diamond! Is that private data?

Thursday, October 11th, 2007

Recently I purchased a CD that was recommended to me by Amazon. I was really impressed, although I’ve not listened to the entire CD I’m glad Amazon recommended it. I’m not the only one with this experience but it got me thinking about the privacy of my data (in this case my purchase […]