How is life?
Well, I am fine. Thank you.
Oh, did you read "Atbash" in the title? OK, so let's talk about "Atbash".
This time, we will talk about a very simple encoding technique called "Atbash Cipher".
The name "Atbash" derives from the first, second, last and second last Hebrew alphabets: Aleph, Tav, Beth, Shin. This technique was originally seen in use by Jeremiah (a major prophet of Hebrew Bible) at several places in his texts, and the technique itself was originally for the Hebrew alphabets; although it's possible with any alphabet set. We will see the english version.
It's very simple (and also obviously weak for encryption), as the only rule is that each alphabet in the message is substituted by the 'exactly-opposite' alphabet in the alphabet-set. Example:
'A' becomes 'Z', 'B' becomes 'Y', 'C' becomes 'X', and so on...
Just as another example: the word "ABCDEF" becomes "ZYXWVU" after applying atbash; and "ZYXWVU" becomes "ABCDEF" back again, if atbash is applied again.
That's it. That's Atbash.
This post was very small, thanks to Atbash.
But next, we will see a very interesting, very popular and still-in-use method of encoding messages to dots and dashes. (Hint: Morse Code!)
Bye till then.