[Tilecache] Using S3 caching - hiding password

[Bruce Rindahl]

I am interested in testing tilecache storage in Amazon S3.  The 
directions say to add this to the tilecache.cfg file:

[cache]
type=AWSS3
access_key=your_access_key
secret_access_key=your_secret_access_key


However - can't anyone see my access keys if they simply open 
http://myhost/tilecache/tilecache.cfg?  How can I hide this and still 
operate tilecache?
Thanks
Bruce