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On Encrypting “thepepsiisintherefrigerator” using Vignere Cipher System using the keyword “HUMOR” we get cipher text

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On Encrypting “thepepsiisintherefrigerator” using Vignere Cipher System using the keyword “HUMOR” we get cipher text

(a) abqdnwewuwjphfvrrtrfznsdokvl

(b) abqdvmwuwjphfvvyyrfznydokvl

(c) tbqyrvmwuwjphfvvyyrfznydokvl

(d) baiuvmwuwjphfoeiyrfznydokvl

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The query is from Overview topic in division Cryptography Overview, TCP/IP and Communication Networks of Cryptograph & Network Security

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The correct option is (b) abqdvmwuwjphfvvyyrfznydokvl

The explanation: Cipher text:=   Ci = Pi + ki mod m (mod 26).

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