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]
To encrypt a hexadecimal message using the Rail Fence cipher for binary numbers with 3 rails, you need to convert the hexadecimal message to binary, apply the Rail Fence encryption algorithm, and convert the resulting binary message back to hexadecimal.
1.) Encrypting the hexadecimal message F9E8 using the Rail Fence cipher for binary numbers with 3 rails:
Step 1: Convert the hexadecimal message to binary:
F9E8 = 1111100111101000
Step 2: Apply the Rail Fence encryption algorithm:
The Rail Fence algorithm arranges the binary message in a zigzag pattern based on the number of rails.
For 3 rails:
1 0 0 1 1 1 1 0
1 1 1 1 0 1 0 0
0 0 0 0 1 0 1 0
Step 3: Convert the resulting binary message back to hexadecimal:
100111110110111010 = 9FDA in hexadecimal.
So, the hexadecimal encrypted message for F9E8 using the Rail Fence cipher for binary numbers with 3 rails is 9FDA.
2.) Decrypting the hexadecimal encrypted message CDEF created by the Rail Fence cipher for binary numbers with 3 rails:
To decrypt the message, you need to reverse the encryption process.
Step 1: Convert the hexadecimal encrypted message to binary:
CDEF = 1100111111101111
Step 2: Apply the Rail Fence decryption algorithm:
By arranging the binary message in a zigzag pattern based on the number of rails, you can decrypt it.
For 3 rails:
1 0 1 0 0 0 1 1
0 1 0 1 1 0 0 0
0 0 0 0 0 1 1 1
Step 3: Convert the resulting binary message back to hexadecimal:
101000110001111 = A31F in hexadecimal.
So, the decrypted hexadecimal message for the encrypted message CDEF using the Rail Fence cipher for binary numbers with 3 rails is A31F.