 # 3 next the initial permutation ip produces two halves

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3. Next the initial permutation (IP) produces two halves of thepermuted block; says Left Plain Text (LPT) and Right PlainText (RPT).4.Now each LPT and RPT to go through 16 rounds of encryptionprocess.5.In the end, LPT and RPT are rejoined and a FinalPermutation (FP) is performed on the combined block 6. Theresult of this process produces 64 bit cipher text.
13.“Encryptiontechnique".Justifythestatement.
14. Describe detailed structure of IDEA.
15. Find the additive and multiplicative inverse of 23 in z100.
1=3*(100-23*4)-23=3*100-12*23-23=3*100-13*23 So themultiplicative * inverse of 23 in Z100 is -23 or 87(-23 mod 100)16. Perform encryption and decryption using the RSAalgorithm, p=17, q=31, e=7, m=2.34)
PU= (7, 527)PR= (343, 527)Q_9.2 Perform encryption and decryption using the RSA algorithm,as in Figure 9.6 for the following:2.627Mod 527 =128128343Mod527=221282
PU= (7, 33)PR= (3, 33)3.57Mod 33= 14143Mod 33 = 55145

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