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What will be the plain text corresponding to cipher text “SCSEMG” if rail fence cipher is used with key value 2?

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in Data Structures & Algorithms II by (80.7k points)
What will be the plain text corresponding to cipher text “SCSEMG” if rail fence cipher is used with key value 2?

(a) MSGSEC

(b) SECMSG

(c) GSMSEC

(d) SECGSM

This question was posed to me during an online exam.

The doubt is from Cryptography in division Cryptography of Data Structures & Algorithms II

1 Answer

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Best answer
The correct choice is (b) SECMSG

The explanation is: For decryption we reverse the process used in encryption.

S

 

C

 

S

 

 

E

 

M

 

G

So the resulting plain text is “SECMSG”.

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