hw9

Security is a form of...

policy

Which of the keys are used to encrypt (not decrypt) a message when anyone can create the message, but only A can read the message? 

public key of A

Secret data remains secret

confidentiality

unauthorized user should not be able to modify data

integrityno

nobody can make a system unusable

availability

determining who the user is

authentication

determining who is allowed to do what

authorization

making sure people can do only what they are allowed to do

enforcement

storing all permissions for all users with each object

access control list

storing all objects a process can touch

capability list

seemingly innocent program that perfoms an unexpected function

trojan horse

Download 10-million-passwords.txt and wordlist.10000.txt from the class website.  The first file contains 10 million passwords.  The second file contains 10,000 words from the English dictionary.  Use tools or write programs to analyze the patterns of the 10 million passwords.  

 What is the second most popular password?  

Password

Download 10-million-passwords.txt and wordlist.10000.txt from the class website.  The first file contains 10 million passwords.  The second file contains 10,000 words from the English dictionary.  Use tools or write programs to analyze the patterns of the 10 million passwords.  

How many different passwords consist of only numbers?

640001

Download 10-million-passwords.txt and wordlist.10000.txt from the class website.  The first file contains 10 million passwords.  The second file contains 10,000 words from the English dictionary.  Use tools or write programs to analyze the patterns of the 10 million passwords.  

How many different passwords are found in the dictionary (lower-case password matches only)?

8000

Download 10-million-passwords.txt and wordlist.10000.txt from the class website.  The first file contains 10 million passwords.  The second file contains 10,000 words from the English dictionary.  Use tools or write programs to analyze the patterns of the 10 million passwords.  

How many different passwords are in the password file?

4400000