How would I go about to decrypt the above string, if I do not know what cipher was used?
It's encrypted using a Ceasar Cipher and a Key of 8. Encryption with Caesar code is a simple substitution (one letter replaces another). Caesar code replaces each letter with an alphabet shift: a letter further in the alphabet. To decrypt we just reverse that substitution.
The plaintext for Kwvnqlmvbqitqbg is "CONFIDENTIALITY".
Best way to go about decrypting this is
- See that this is still readable plaintext and most likely a simple substitution.
- When we know the language used, we can use the a frequency analysis to find out which letter in the cipher is most likely to represent the most popular letters in that language. This is a short text, so this won't help too much.
- Easiest solution is to just try all the keys because there only are only 26 letters in the alphabet.
There are also online services that encrypt/decrypt Ceasar cipher like: https://www.dcode.fr/caesar-cipher