Yes, you're right. The age of the universe is not constant.

In fact the bound on the length of a description of the state of the universe must be increasing with the square of its age. But knowing the current state exactly would also allow you to know the state for all time, which seems to be a contradiction. An alternative view is that the universe we observe is the result of a simple program running on a powerful abstract computer: try an infinite number of universes with all possible laws of physics. We must necessarily observe a universe with physics that supports intelligent life. That universe might only need a few hundred bits to describe the free parameters of string theory and general relativity needed to form planets and to make the chemistry for life come out right. I wrote a bit more about this at

http://mattmahoney.net/singularity.html (OK, not really compression related).

My comments about encryption are for those who would design their own secret encryption algorithms and not publish source code to "improve" security. You are actually doing the opposite. The problem is that many amateurs in cryptography notice that compressed data and encrypted data both look random and get the idea that you can use a key to fiddle with the compression algorithm a bit and have a neat new encryption algorithm. Such algorithms are almost always broken because they don't understand the basic principles of cryptography. If you are not one of the 100 or so people on this planet that really know how to create new, unbreakable encryption algorithms, then use a well tested algorithm like AES and publish your source code so others can make sure you did it right. (If you can't explain why AES or RSA or ECC or SHA-256 are secure, or can't come up with new attacks against them, then you probably aren't one of those 100 people).

Or better yet, don't encrypt at all. Most people won't use the feature so it just adds bloat. For those that do need it, there are other tools that they probably already have. A good program should do one thing and do it well.