Either a proxy similar to prefixStorage or an easy interceptor (#23) that encrypts data and decrypts when reading.

This can be so useful when we do not trust storage backend.

On additional point is that, we also need to encrypt paths (keys) for maximum privacy.

Questions:

• Allow encrypt subpaths?
• Allow encrypting per read/write?
• How to use blobs in raw storage? (Support raw data #21)
• What algorithm use that is both lightweight in pure js AND can be accelerated by runtime?