Question: A system requires that all passwords contain only lower case letters and are between 6 and 8 letters long. Let x be a password on

A system requires that all passwords contain only lower case letters and are between 6 and 8 letters long. Let x be a password on this system that contains exactly one word from the phrase "super strong password" as a substring. (a) What's the probability of guessing x on the first try? (b) If x is 8 characters long, and was encrypted as \vvfgdqqq" using an affine cipher, f(x) = (ax + b) mod 26, what was the key, (a; b)?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

A computer system uses passwords that contain exactly eight characters, and each character is one of 26 lower-case letters (a-z) or 26 upper-case letters (A-Z) or 10 integers (0-9). Let Ohm are...

Your manager has provided you the following matrix and asked that you use it to complete the design assessment phase of your testing. The manager has already performed a preliminary survey, and has...

1. Question 1 Company ABC's password policy has always been that the system generates passwords for its users instead of letting them pick their own. The passwords are random 8-character strings with...

The American Equities investment company offers a wide range of investment opportunities ranging from mutual funds to bonds. Investors can check the value of their portfolio from the American...

Canadian phone numbers are 10 digits long, using digits from 0 to 9. How many different phone numbers are possible? How many different phone numbers are possible if each digit can only occur once?...

1.Canadian phone numbers are 10 digits long, using digits from 0 to 9. How many different phone numbers are possible? How many different phone numbers are possible if each digit can only occur once?...

Using Graphical Representations of Business Processes in Evaluating Internal Control A. Faye Borthick, Gary P. Schneider, and Anthony Vance ABSTRACT: In this case, students (1) extend business...

Using python : 4. The Password Hacking Problem Your computer system uses a 4-letter password for login. For our purposes the password is restricted to lower case letters of the alphabet. It is easy...

SHIPMENT_LINE SHIP_ID INV_ID SL_QUANTITY SL_DATE_RECEIVED Number Number Number Date/ Time 25 09/10/2006 2 25 09/10/2006 2 25 5 200 6 200 7 200 12 100 08/15/2006 13 100 08/25/2006 23 50 08/15/2006 24...

24-Seven: Missing information relevant to payables processing Question that Kiran should have asked or pursued further Reason for asking the question 1 How do you know suspended transactions are...

IMHO Inc. issues a 26 year bond with a 2.250% coupon and a $35,000,000.00 face value. The yield rate on the bond is 9.250% compounded annually. They will set up a sinking fund with semi-annual...

When violet light of wavelength 415nm falls on a single slit, it creates a central diffraction peak that is 9.20cm wide on a screen that is 2.55m away. How wide is the slit?

A professional sports franchise can have a positive total dollar return on an investment even if that investment contains a capital loss. Question 6 options: True False Yes, but only if the losses...

4 pts Question 11 Mike places $200 in a savings account that pays 4% per year compounded monthly. How much is in his account after 9 months? $206.08 $286.49 $204.55 $284.66

6. Why is there so much advertising in monopolistic competition and oligopoly? How does such advertising help consumers and promote efficiency? Why might it be excessive at times? LO14.4

10. Refer to the following payoff matrix. LO14.6 Assuming this is a sequential game with no collusion, what is the outcome if Firm A moves first to build a new type of commercial aircraft? Explain...

9. Refer to the payoff matrix in discussion question 3. First, assume this is a one-time game. Explain how the $60/$57 outcome might be achieved through a credible threat. Next, assume this is a...