I have the following ciphertext: w jaoot zhoipqjwp ql wee lro oawxaop I know it is a substitution cipher but using my frequency analysis skills does not help me to find the plaintext. I think the ...
I created a basic file encryption method, that seems pretty secure to me (based on an answer below, it seems to be an implementation of the Vigenère cipher) , but one of my colleagues claims that it ...
In simple steps here the system: first write text. hand cipher then divide into groups of three letters: han dci phe r then choose a key consisting of three letters, for example ...