Question

1.) Encrypt the hexadecimal message F9E8 using the Rail Fence cipher for binary numbers with 3 Rails. [Give answer in hexadecimal encrypted message]

2.) Decrypt the hexadecimal encrypted message CDEF created by the Rail Fence cipher for binary numbers with 3 Rails. [Give answer in hexadecimal message]

Answer 1

Please identify the School Subject with one of those listed on the upper left.

Sra

Answer 2

Sorry it's computing in security, so I guess that would fall under computers. . .