What is the binary representation of the '5' character (NOT the number 5)? "Give me six hours to chop down a tree and I will spend the first four sharpening theaxe." - Abraham LincolnIs it ever a good idea to reuse a key in the One-Time-Pad eneryption scheme? Is it agood idea to shoot yourself in a foot?. With a bazooka?. While seating on 10kg ofTNT?.. Before you get any ideas, no - that would be a horrible blunder, and thisproject will demonstrate just how easily this scheme falls apart when the key isreused. "Easily" here is used relatively as you will find out; this is, in fact, your firstchallenging project. Make sure you give it enough attention and effort.Knowing how the logical XOR operation works is crucial to your success - after all,ciphertext[i] = message[i] XOR key[i]. Recall from lecture that the bit-wise XORoperation yields a 1 when and only when the two bits are different (that is, wheneither bit x is 1 or bit y is 1, but NOT both):Bit x Bit y x XOR y111111Before we get to an actual cipher, let's practice implementing XOR (Psst! These arehints of how you should go about cracking the One-Time-Pad with key reuse *hint-hint-wink-wink*. You should be using your helper methods from lab 1 to help youeasily convert between ASCII text strings, hex strings, and byte arrays. Keep in mindthat the XOR operator executes on the byte data type. To get binary representation ofstrings in the standard ASCII 8-bit format, you can just Google the ASCII table or usea website to translate.

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What is the binary representation of the '5' character (NOT the number 5)?

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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Concept explainers

Random Access

Random access is generally known as direct access. Random access is the capability to have access to any item from a given population of elements at random. Sequential access is the direct opposite of random access. In random access, the elements can be retrieved irrespective of the location. In order to move from point A to Z, you can just jump to point Z in random access system. The disk is an example of random access.

Question

What is the binary representation of the '5' character (NOT the number 5)?

"Give me six hours to chop down a tree and I will spend the first four sharpening the
axe." - Abraham Lincoln
Is it ever a good idea to reuse a key in the One-Time-Pad eneryption scheme? Is it a
good idea to shoot yourself in a foot?. With a bazooka?. While seating on 10kg of
TNT?.. Before you get any ideas, no - that would be a horrible blunder, and this
project will demonstrate just how easily this scheme falls apart when the key is
reused. "Easily" here is used relatively as you will find out; this is, in fact, your first
challenging project. Make sure you give it enough attention and effort.
Knowing how the logical XOR operation works is crucial to your success - after all,
ciphertext[i] = message[i] XOR key[i]. Recall from lecture that the bit-wise XOR
operation yields a 1 when and only when the two bits are different (that is, when
either bit x is 1 or bit y is 1, but NOT both):
Bit x Bit y x XOR y
1
1
1
1
1
1
Before we get to an actual cipher, let's practice implementing XOR (Psst! These are
hints of how you should go about cracking the One-Time-Pad with key reuse *hint-
hint-wink-wink*. You should be using your helper methods from lab 1 to help you
easily convert between ASCII text strings, hex strings, and byte arrays. Keep in mind
that the XOR operator executes on the byte data type. To get binary representation of
strings in the standard ASCII 8-bit format, you can just Google the ASCII table or use
a website to translate.

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