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Category > Applied Sciences Posted 30 Apr 2017 My Price 5.00

PGP makes use of the cipher feedback

PGP makes use of the cipher feedback (CFB) mode of CAST-128, whereas most symmetric encryption applications (other than key encryption) use the cipher block chaining (CBC) mode.We have

CBC: Ci= E(K, [Ci-1⊕Pi]); Pi= Ci-1⊕D(K, Ci)

CFB: Ci= Pi⊕E(K, Ci-1); Pi = Ci⊕E(K, Ci-1)

These two appear to provide equal security. Suggest a reason why PGP uses the CFB mode.

Aug 29 2014 04:58 PM

 

 

Answers

Alpha Geek
(8)
Status NEW Posted 30 Apr 2017 01:04 PM My Price 5.00

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file 1493560655-answer1.docx preview (50 words )
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