Y-M | U-I

 

Say you are talking with someone and you want to tell her something important but not directly. You encrypt it.

How? Well we have to reject simple "shifted" ciphers, that is the ones in which you just shift the letters: $A = C$, $B = D$, and generally $\alpha = \alpha + 2$, which is a "wrong" way to write it but programmer use this way all the time (also it's the correct form to use when you write a program), but it defines that the $\alpha$-th variable is equal to itself plus two. 

Here the variables are the letters, so the shift is clear. In general we might have $\alpha = \alpha + n$ provided that $n$ is such that $\alpha - (\text{mod n}) \alpha \neq 0$ otherwise you just get the original alphabet and... well not smart!

Considering that I do love cryptography and number theory too, I of course thought about a personal encryption: a "dynamical shift over the integers" (obviously, since we cannot deal with any other set of numbers, or... can we :D ). I fabricated a very interesting key (because yes, I sleep little and and I really want to think about a way to encrypt my feelings) which associated to a single modified letters, its true letter in a way that is dynamical within the word itself and within the words. For the sake of my future brain: 

$$\text{ERAERAT YU KEMAN}$$

I am perhaps going nuts.

But as far as I know, to dream is not forbidden yet.