A Question of Entropy

In the Dark

We haven’t had a poll for a while so here’s one for your entertainment.

An article has appeared on the BBC Website entitled Web’s random numbers are too weak, warn researchers. The piece is about the techniques used to encrypt data on the internet. It’s a confusing piece, largely because of the use of the word “random” which is tricky to define; see a number of previous posts on this topic. I’ll steer clear of going over that issue again. However, there is a paragraph in the article that talks about entropy:

An unshuffled pack of cards has a low entropy, said Mr Potter, because there is little surprising or uncertain about the order the cards would be dealt. The more a pack was shuffled, he said, the more entropy it had because it got harder to be sure about which card would be turned over next.

I…

View original post 35 more words

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s