Decipher each encrypted code use the method and parameters indicated. Please show or discuss all work in how you deciphered the message. If you neglect to complete the table below, you will receive 0 points. Review documents in class resources for help.

1. Use an Additive Cipher to decipher the following code:

Solve the following equation to acquire the additive key

. 2y2 -17y= -35 Solve for Y. Your additive key will be the integer result.

tzwlw jfyjx ybjfp sjxxq njxns lnans lzuym jrtxy hjwyf nsbfd ytxzh hjjin xfqbf dxyty wdozx ytsjr twjyn rj

Please complete the tables below and decipher the above code. Show all work or you will lose points. You answer will be a quote.

Plaintext a b c d e f g h i j k l M

position 1 2 3 4 5 6 7 8 9 10 11 12 13

Additive Key:

Position of cipher text :

Cipher text :

Plaintext N O P Q R S T U V W X Y Z

position 14 15 16 17 18 19 20 21 22 23 24 25 26

Additive Key:

Position of cipher text:

Cipher text

2. Use a Multiplicative Cipher to decipher the message. C = 5P mod 26

uwafy iwvvw iyvab yfylu mwlrs riksv ntyvy lmsre vswrs duwal yiwsr ivwiw vwjyt ksvnq evsqd eovsw r

Please complete the tables below and decipher the above code. Show all work or you will lose points. You answer will be a quote.

Plaintext a b c d e f g h i j k l m

Position 1 2 3 4 5 6 7 8 9 10 11 12 13

Multiply by ____

Mod 26 :

Cipher text:

Plaintext n o p q r s t u v w x y z

Position 14 15 16 17 18 19 20 21 22 23 24 25 26

Multiply by ____

Mod 26 :

Cipher text:

Deciphered message:

3. Use a Permutation Cipher to decipher the encrypted message below. Use b=6 as your block length and 4,5,2,6,1,3 as your permutation sequence. Please decipher the encrypted code and show the first 4 inverse permutation blocks. (10 points). Show all work requested or you will lose points. Your answer will be a quote.

ceussc lafnsu succdn sfeucs opplle nodteo ygarvr lyaiet eitrnh libtai theeis ryviya eitrnh ireeds retaso hehict tepnro l_i_ta

Block 1 1 2 3 4 5 6

Inverse Permutation:

Letter:

Block 2 1 2 3 4 5 6

Inverse Permutation:

Letter:

Block 3 1 2 3 4 5 6

Inverse Permutation:

Letter:

Block 4 1 2 3 4 5 6

Inverse Permutation:

Letter:

Deciphered message: