ROT13 is a cyclic shift cipher that substitutes each English letter with one that is 13 away in the alphabet. It is used today not for security, but as a simple obfuscation device, because the same algorithm is used for both encryption and decryption. People wishing to encrypt or decrypt a message, M (such as a spoiler paragraph in a movie review), just cut-and-paste M to a ROT13 converter and
click a button "APPLY" to do the encryption or decryption. Give an example of another ROTi transformation that could be used for both encryption and decryption in a similar way.
What will be an ideal response?
ROT2. You just need to push the APPLY button once to encrypt, 12 times to
decrypt.
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Answer the following statement true (T) or false (F)
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