C++ How To Program Plus Mylab Programming With Pearson Etext -- Access Card Package (10th Edition)
10th Edition
ISBN: 9780134583006
Author: Deitel
Publisher: PEARSON
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Chapter 1, Problem 1.14MAD
(2010 Flash Crash") An example of the consequences of our dependency on computers was the so-called "flash crash " which occurred on May 6, 2010, when the U.S. stock market fell precipitously in a matter of minutes, wiping out trillions of dollars of investments, and then recovered within minutes. Use the Internet to investigate the causes of this crash and discuss the issues it raises.
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1. Secret Spy Code
by CodeChum Admin
Agent 007, I found some numbers written
on the wall which could be the key to
unlocking the room that holds the
president's daughter!!! Unfortunately,
when I tried inputting the numbers to the
lock, it didn't work. What's that you say?
Try reversing the numbers? Why, that's
absolutely brilliant! Come on, we gotta
hurry, the bomb is about to blow!
Input
1. The number written on the wall
Constraints
The value is within the range: 0 <= n <=
2147483647.
Output
The first line will contain a message
prompt to input the number.
The second line contains the reverse of
that number.
Enter the number: 75
57
Cryptography problem mathematics
Suppose Alice and Bob are using a cryptosystem with a 128-bit key, so there are 2128possible keys. Eve is trying a brute-force attack on the system.(a) Suppose it takes 1 day for Eve to try 264 possible keys. At this rate, how long willit take for Eve to try all 2128 keys? (b) Suppose Alice waits 10 years and then buys a computer that is 100 times fasterthan the one she now owns. Will she finish trying all 2128 keys before or after whatshe does in part (a)?
true or false
11. One property of encryption algorithm is that someone can know the details of the algorithm and still not be able to decipher the encrypted message without knowing the key that the algorithm used to encrypt the message.
Chapter 1 Solutions
C++ How To Program Plus Mylab Programming With Pearson Etext -- Access Card Package (10th Edition)
Ch. 1 - Fill in the blanks in each of the following...Ch. 1 - Prob. 1.5ECh. 1 - Fill in the blanks in each of the following...Ch. 1 - Prob. 1.7ECh. 1 - (Test Drive: Carbon Footprint Calculator) Some...Ch. 1 - (Test Drive: Body Mass Index Calculator) By recent...Ch. 1 - (Attributes of Hybrid Vehicles) In this chapter...Ch. 1 - Prob. 1.11MADCh. 1 - Prob. 1.12MADCh. 1 - (Programmer Responsibility and Liability) As a...
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- What is the compressed way of encrypting a computer's file system in terms of compression?arrow_forwardTrue or False 9. An example of a lightweight cryptographic block cipher is the Scalable Encryption Algorithm.arrow_forwardAn early attempt to force users to use less predictable passwords involved computer-supplied passwords. The passwords were eight characters long and were taken from the character set consisting of lowercase letters and digits. They were generated by a pseudorandom number generator with 215 possible starting values. Using the technology of the time, the time required to search through all character strings of length 8 from a 36-character alphabet was 112 years. Unfortunately, this is not a true reflection of the actual security of the system. Explain the problem.arrow_forward
- Cryptography is the study of protecting information. A cipher is a pair of algorithms ―the first algorithm encrypts a message and the second algorithm decrypts the message. In most cases, a unique key is also required to encode or decode plaintext. The Caesar cipher is one of the simplest and most widely known ciphers. It is named after Julius Caesar who allegedly used it to protect important military directives. Every letter in the plaintext is replaced by a letter N positions down the alphabet. For example, if N = 3, then a => d and b => e. While the idea is remarkably simple, it appeared to work in Ancient Rome. Most people there couldn't read, and those who could simply assumed it was a foreign language. Write a program that implements the Caesar cipher. You program will get from standard input the key N, followed by a line of plaintext. . . The key N should be any integer between 0 and 26 inclusive. If this isn't the case, print an error message and quit. Any numbers or…arrow_forwardCryptography: Using the Euclidean Algorithm find the greatest common divisor (gcd) of the following: a) 155 37 b) 1114978 23456 c) 110010105 750arrow_forwardExercise 1 - Review (Substitution Cipher) 1. The ciphertext below was encrypted using a substitution cipher. Decrypt the ciphertext without knowledge of the key. ywkdmkmj lbmbr nkwerulwbt orkrumh lmkbjl wl m surywru pwopru-rdnvmbwjk wklbwbnbwjk vjyywbbrd bj jxxruwko mxxjudmlhr mkd ravrhhrkb rdnvmbwjk bj wbl vhwrkbl xujy mvujll ywkdmkmj mkd jbpru krwopljuwko urowjkl. bpr nkwerulwbt pml lmvvmhmnurmbr mkd sjlb-lmvvmhmnurmbr drourr sujoumyl wk mouwvnhbnur, xwlpruwrl, rkowkrruwko, rdnvmbwjk, lnlwkrll mdywkwlbumbwjk mkd mvvjnkbmkvt, kmbnumh lvwrkvrl mkd ymbprymbwvl, mkd ljvwmh lvwrkvrl mkd pnymkwbwrl, oumdnmbr lbndwrl, mkd hmc. m knylru jx cpwvp mur mvvurdwbrd nkdru bpr mvvurdwbwko morkvt jx vpmubrurd vjhhrorl mkd nkwerulwbwrl wk bpr spwhwsswkrl. wb mhlj jxxrul lmlwv rdnvmbwjk sujoumyl bpujnop wbl jnkwju pwop lvpjjh mkd lrkwju pwop lvpjjh drsmubyrkbl. msmub xujy wbl ymkdmbr jx wklbunvbwjk, bpr nkwerulwbt suwdrl wbl rabrklwer rkomoryrkb wk urlrmuvp mkd rabrklwjk bpmb lrkrxwb bpr mvmdrywv…arrow_forward
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