Please help me with this homework because I cant understand the cipher text and plaintext
IT 223 ? 29 points total
1. (9 points)
(a) Encrypt the following plaintext...
A page of history is worth a volume of logic.
F UFLJ TK MNXYTWD NX BTWYM F ATQZRJ TK QTLNH
(b) Decrypt the following ciphertext...
(c) Decrypt the following ciphertext...
2. (15 points) Given the key: n+2, n-1, n+1, n-2 You would encrypt the following
word: ?Hello? this way: JDMJQ
Please encrypt the following sentence:
?We don?t walk in the dark, we are the dark.?
Yg fqpv ycnm kp vjg fctm, yg ctg vjg fctm
Xf epou xbml jo uif ebsl, xf bsf uif ebsl
(1 point) what sort of cipher does this represent?
?Frequency of letters occurring in the English language.?
Htgswgpea qh ngvvgtu qeewttkpi kp vjg Gpinkuj ncpiwcig.
Gsfrvfodz pg mfuufst pddvssjoh jo uif Fohmjti mbohvbhf
3. (2.5 points each)
Here is another encryption / decryption exercise. For this exercise, I have provided
a word that will serve as the key. You must figure out the key in order to complete
To get you started:
Easy = CCQA (Once you figure out the pattern to this you can do the following):
4a. Encrypt this plaintext:
I like information security.
4b. Decrypt the following ciphertext:
GPDQQ GAKQH SP
This question was answered on: Dec 18, 2020
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Dec 18, 2020EXPERT
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