Use the Vigenère cipher with the keyword 'tablet' to encrypt the following sentence: "Programs". Show your work in details in the form of table. Table below help you to find the code equivalent to each letter. a bc d]e]f g h|i jk |1 m n |o |p q |r ]s ]t ]u v w]x ]y]z 0 12 3 4 5 6 7 8 9 10|11 12 13 14 15 16|17 18 19| 20 21 22 23 24 25

Use the Vigenère cipher with the keyword 'tablet' to encrypt the following sentence: "Programs". Show your work in details in the form of table. Table below help you to find the code equivalent to each letter. a bc d]e]f g h|i jk |1 m n |o |p q |r ]s ]t ]u v w]x ]y]z 0 12 3 4 5 6 7 8 9 10|11 12 13 14 15 16|17 18 19| 20 21 22 23 24 25

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Use the RSA cipher with public key n = 713 = 23 · 31 and e = 43. Encode the word "HERO" into its numeric equivalent and encrypt it. (Encode one letter at a time. Assume the letters of the alphabet are encoded as follows: A = 001, B = 002, C = 003, ..., Z = 026.
The affine cypher with key "9x+3" was used to encrypt the following text. (To encode, multiply the letter by 9 and then add 3 (mod 26).) The encryption result of the letter "A" is, for example, "D." Decrypt the ciphertext below. GNVBAXSL XG QWB
The following text has been encoded using the affine cipher with key "9x+3". (That is, multiplying the letter by 9 and add 3 (mod 26) to encode.) For example, the encryption result of letter “A” is “D”. Decrypt the following ciphertext. GNVBAXSL XG QWB
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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?
Use the Vigenère cipher to DECRYPT the following ciphertext: “OGTJQPPB” knowing that thekeyword ‘optical’ was used for encryption. Write the original plaintext as readable text? Showyour work in details (in the form of table).Table below helps you to find the code equivalent to each letter. a b c d e f g h i j k l m n o p q r s t u v w x y z 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
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…
Use the RSA cipher with public key n = 713 = 23 · 31 and e = 43 to encode the messages HELP into their numeric equivalents and encrypt them. Performs all step. Use pencil and paper to write the answer. show your work as well.
A rotation cipher is one of the simplest, plain-text ciphers, known since at least the time of Julius Then a rotation of 3 means that the first three letters of the alphabet are moved to the end of the sequence, while the other letters move up, as shown below. Notice that the movement is done one letter at a time. a b c d e f g h i j k l m n o p q r s t u v w x y z 23 24 25 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 A cipher is created by using the rotated alphabet to replace each letter in the original string with its rotated equivalent letter. Using the example above, the word “this” is translated as follows: • the ‘t’ is found at index 19 in the alphabet. The letter in the rotated alphabet is ‘w’. • the ‘h’ is found at index 7, the rotated letter is ‘k’ • the ‘i’ is found at index 8, the rotated letter is ‘l’ • the ‘s’ is found at index 18, the…
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If header files are added please provide them The Caesar cipher is one of the earliest known and simplest ciphers. It is a type of substitution cipher in which each letter in the plaintext is 'shifted' a certain number of places down the alphabet. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z U V W X Y Z A B C D E F G H I J K L M N O P Q R S T H E L L O W O R L D Normal Text B Y F F I Q I R M X Encrypted Text You are tasked to create an encryption program which takes a key word. The keyword will fill the first part of the shifted array. The remaining letters will fill the end of the array. It should look like this: Key=”TOY A B C D E F G H I J K L M N O P Q R S T U V W X Y Z T O Y A B C D E F G H I J K L M N P Q R S U V W X Z You should have an interactive menu with the following options: 1 Enter Key word //takes new key word and…