Write a script that inputs a line of encrypted text and a distance value and outputs plaintext using a Caesar cipher.
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- Write a script that inputs a line of encrypted text and a distance value and outputs plaintext using a Caesar cipher. The script should work for any printable characters. An example of the program input and output is shown below: Enter the coded text: Lipps${svph% Enter the distance value: 4 Hello world!Write a script that inputs a line of plaintext and a distance value and outputs an encrypted text using a Caesar cipher. The script should work for any printable characters. An example of the program input and output is shown below: Enter a message: Hello world! Enter the distance value: 4 Lipps${svph%Affine Cipher is an example of a Monoalphabetic substitution cipher. The encryption process is substantially mathematical done by using the following formula: C = (P ∗ ?1 + ?2) mod 26. Where k1, k2 are two integers representing the key (selected randomly), C is the ciphertext value, and P is the plaintext value. Where C and P integers with values between 0 and 25. Write an Octave programme to implement this system, run your programme using the Plaintext: “the quick brown fox jumped over the lazy dog”. Show the obtained ciphertext with the selected values of the keys k1 & k2. Given that the plaintext “s” mapped to ciphertext “W”, plaintext “x” mapped to ciphertext “Z” when encrypted with Affine Cipher. Determine, mathematically, the values for the two keys K1 and K2.
- Affine Cipher is an example of a Monoalphabetic substitution cipher. The encryption process is substantially mathematical done by using the following formula: C = (P ∗ ?1 + ?2) mod 26. Where k1, k2 are two integers representing the key (selected randomly), C is the ciphertext value, and P is the plaintext value. Where C and P integers with values between 0 and 25. 1) Write an Octave programme to implement this system, run your programme using the Plaintext: “the quick brown fox jumped over the lazy dog”. Show the obtained ciphertext with the selected values of the keys k1 & k2. 2) Given that the plaintext “s” mapped to ciphertext “W”, plaintext “x” mapped to ciphertext “Z” when encrypted with Affine Cipher. Determine, mathematically, the values for the two keys K1 and K2. I need an octave code for the first part of this question, that i can just copy and paste. In addition, to an explanation of the steps done to…Write a program to encrypt the plain text using transportation cipher(C code only no no output only code)Suppose we will use Advanced Encryption Standard (AES) to encrypt a block of plaintext andthe known round key for round 7 is:B5 8D BA D2 31 2B F5 60 7F 8D 29 2F EA D2 73 21Please calculate the first four words of the round key for round 8 by following the steps below:(1) What is the ‘temp’ value after RotWord? (2) What is the value after SubWord? (3) What is the value after XOR with Rcon? (4) What is the first word (i.e. the first 4 bytes) of the round key for round 8? (5) What is the third word (i.e. the third 4 bytes) of the round key for round 8?
- The following is a message encrypted using keyword cipher and you know the keyword is CYBERSECURITY and the key letter is “a”. Decrypt the message and show all your work. OIR GJN OTG KJM OCH OCO OTO PER OIC OBC HYR SJM GRE TNO ICO JSE RNT MRO JUJ JHF RCM HUsing public key cryptography, X adds a digital signature s to message M, encrypts <M, s>, and sends it to Y, where it is decrypted. Which one of the following sequences of keys is used for the operations? A) Encryption: X's private key followed by Y's private key; Decryption: X's public key followed by Y's public key B) Encryption: X's private key followed by Y's public key; Decryption: X's public key followed by Y's private key C) Encryption: X's public key followed by Y's private key; Decryption: Y's public key followed by X's private key D) Encryption: X's private key followed by Y's public key; Decryption: Y's private key followed by X's public keyThe following is a message encrypted using keyword cipher and you know the keyword is CYBERSECURITY and the key letter is “a”. Decrypt the message and show all your work. OIR GJN OTG KJM OCH OCO OTO PER OIC OBC HYR SJM GRE TNO ICO JSE RNT MRO JUJ JHF RCM HTH U
- You are given the following parameters in RSA cryptosystem: p = 11, q = 13, e = 13 a) Find the integer d. b) List down the public key and private key. You need to encrypt the plaintext message, M = OF. c) Convert this message to value according to ASCII table. To encrypt this message, you can either combine the value, or separate it into the blocks of 2 digits (Hint: it must satisfy the condition M < n). d) Encrypt and decrypt the message OF. e) If the decimal value (not character) of ciphertext is 188267, decrypt this value and convert it to an appropriate message according to the ASCII table.Encrypt the message " MATH " by translating the letters into numbersand then applying the encryption function given, and then translating the numbers back into letters.(a) f(p)=(17p+5) mod 26 _____ (b) f(p)=(15p+14) mod 26 ___ (c) f(p)=(19p+5) mod 26 ___Use A=0,B=1,C=2,D=3,E=4,F=5,G=6,H=7,I=8, J=9,K=10,L=11,M=12,N=13,O=14,P=15,Q=16,R=17, S=18,T=19,U=20,V=21,W=22,X=23,Y=24,Z=25A Caesar cipher is a simple substitution cipher based on the idea of shiftingeach letter of the plaintext message a fixed number (called the key) ofpositions in the alphabet. For example, if the key value is 2, the word"Sourpuss" would be encoded as "Uqwtrwuu." The original message canbe recovered by "reencoding" it using the negative of the key. Write a program that can encode and decode Caesar ciphers. The in-put to the program will be a string of plaintext and the value of the key. The output will be an encoded message where each character in the orig-inal message is replaced by shifting it key characters in the Unicode char-acter set. For example, if ch is a character in the string and key is the amount to shift, then the character that replaces ch can be calculated as:chr (ord(ch) + key) .