Engineering, 29.02.2020 05:28 hardwick744
9.12 LAB: The Caesar cipher In cryptography, Caesar's cipher is one of the simplest and most widely known encryption techniques. The method is named after Julius Caesar, who used it in his private communication. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet. We wish to implement Caesar's encryption scheme by substituting each alphabet in the string with another alphabet that occurs three shifts to its left. For example, with a left shift of 3, D would be replaced by A, E would become B, and so on. Note that that the code wraps around in that A would be replaced by X, B would be replaced by Y, and C would be replaced by Z. Write a function called encrypt that takes two input arguments: the plaintext and the number of left shifts to use when constructing the cipher, and returns the encrypted string. For example, if the user enters plaintext = "I CAME I SAW I CONQUERED" and shift = 3, then
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Engineering, 04.07.2019 18:10
Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.
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Engineering, 04.07.2019 18:10
Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.
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Engineering, 04.07.2019 18:10
Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.
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Engineering, 04.07.2019 18:10
Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)
Answers: 1
9.12 LAB: The Caesar cipher In cryptography, Caesar's cipher is one of the simplest and most widely...
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