It is a shift cipher that uses a simple substitution ... but the basic principle remains the same. Several types of encryption algorithms are used today, each with its own benefits and challenges.

And while it is certainly no small feat to create truly secure encryption algorithms ... sometimes called a rotational or shift cipher – you “rotate” or shift the alphabet a few letters ...

Instead, use TEA or Blowfish, which are both reasonably fast. Tiny Encryption Algorithm is a very fast and moderately secure cipher produced by David Wheeler and Roger Needham of Cambridge ...

With enough time, every great encryption algorithm today will be tomorrow’s cracked cipher. That’s why all security administrators need to ensure that their enterprise’s crypto keeps pace.