1)Examples of each of the main authentication bases are2) A minimum time between password changes is specified so users3) Two security properties of a cryptographic hash function are4) "Online" and "offline" attacks differ in that5) A mechanism capable of distinguishing between humans and computers may be a6) Two primary properties used in malware classification areand7) Two classes of intruder that an intrusion detection system may attempt to find are8) Race conditions can occur whenand can result in9) Phishing emails are typically sent in bulk because10) The Biba model is for the purpose of11) SYN flooding is an example of12) To be stateless means13) The term "shellcode" refers to14) The difference between logging and auditing is15) A firewall cannot typically protect against16) The purpose of sanitization in the context of auditing is toandwhile BLP is for the purpose ofand is relevant in the context ofin the context oforandand

According to bartleby guidelines we are supposed to answer only 3 subparts/ mcq so I have answered…

Answered: 1) Examples of each of the main…

1) Examples of each of the main authentication bases are 2) A minimum time between password changes is specified so users 3) Two security properties of a cryptographic hash function are and and

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

See similar textbooks

Similar questions

A password system uses exact 8-character of alphanumeric. To be a secure password system, any password cannot contain the following keywords: (a) All numbers. I.e., must contain at least one letter in the password. (b)User's name. What is the probability of an adversary guessing John Hank's password correctly?
Find out what risks are involved with the various authentication techniques and suggest a way to deal with the following situation.Bob uses a cryptographic hash function to check a password against a cache of other hashes.Bob performs a cryptographic hash on a password and checks it against a database of previously double-hashed passwords.
Find out what risks are involved with the various authentication techniques and suggest a way to deal with the following situation.Bob uses a cryptographic hash function to check a password against a cache of other hashes.Bob performs a cryptographic hash on a password and checks it against a database of previously double-hashed passwords.
Each of the following is a true/false statement about a tweakable block cipher (TBC). Place a checkmark next to each true statement. In the questions mentioning E', let E' be a random instance of a TBC and E'(T,X) be the result of using E' with tweak T and input X. Group of answer choices: (1)For TBC security both the current key and tweak in use must be kept secret from adversaries. (2)Each time a new tweak is given to a TBC, the TBC behaves like a new random permutation. (3)When a TBC is used once per tweak its outputs may be considered (4)A TBC is a prominent part of the design of OCB. (5)If X1 ≠ X2, then always E'(T,X1) ≠ E'(T,X2) (6)If T1 ≠ T2, then always E'(T1,X) ≠ E'(T2,X)
Question 20 Based on the previous question (UNIX passwords are derived by encrypting a public salt 1000 times with the password). Assume that passwords are limited to the use of the 52 English letters (both lower and upper cases) and that all passwords are 6 characters in length. Assume a password cracker capable of doing 6 million encryptions per second. How long will it take to crack a password with brute-force on a UNIX system, on average? (answer is an integer, the unit must be in seconds) Your Answer: Answer