Hi guys,

I want to create a website where a user enters content (say a couple of sentences) which eventually gets stored in a backend database (maybe MySQL). But before the content leaves the client side, I want it to get encrypted using something on client like maybe javascript.

The data will travel over the web encrypted, but more importantly, will also be permanently stored in the backend database encrypted.

Is JavaScript appropriate to use for this? Would 256 bit encryption take too long?

Also, how do you query an encrypted database later on if you want to pull down the content that a user may have submitted over the past 2 months?

I'm looking for tips, suggestions and any pointers you guys may have in how to go about learning about and accomplishing this.

Thanks!