Quick Answer: How Is Key Stretching Effective In Resisting Password Attacks?

What do you do in authentication?

Identification occurs when a user professes an identity (such as with a username), and authentication occurs when users prove their identity.

For example, users are authenticated when they provide both their username and correct password..

What is the biggest drawback to symmetric encryption?

In symmetric encryption, the key must be securely shared. This can be complicated because long keys are required for good security.

What is a hybrid attack?

Hybrid Attacks are a kind of cyberattack where the perpetrator blends two or more kinds of tools to carry out the assault. A typical hybrid attack is one that merges a dictionary attack and a brute-force attack.

What is a hybrid attack quizlet?

What is a hybrid attack? A. An attack that uses both automated and user input. B. An attack that combines a dictionary attack with a mask attack.

What is the most common form of authentication?

PasswordPassword – The use of a user name and password provides the most common form of authentication. You enter your name and password when prompted by the computer. It checks the pair against a secure file to confirm.

How does key stretching work?

Key stretching algorithms depend on an algorithm which receives an input key and then expends considerable effort to generate a stretched cipher (called an enhanced key) mimicking randomness and longer key length.

Which asymmetric algorithm is used for establishing a shared key?

Symmetric key cryptographySymmetric key cryptography is any cryptographic algorithm that is based on a shared key that is used to encrypt or decrypt text/cyphertext, in contract to asymmetric key cryptography, where the encryption and decryption keys are different.

Which of the following is a secure password?

Do use a combination of uppercase and lowercase letters, symbols and numbers. Don’t use commonly used passwords such as 123456, the word “password,” “qwerty”, “111111”, or a word like, “monkey”. Do make sure your user passwords are at least eight characters long.

What is the maximum setting for minimum password age?

The Minimum password age policy setting determines the period of time (in days) that a password must be used before the user can change it. You can set a value between 1 and 998 days, or you can allow password changes immediately by setting the number of days to 0.

What type of attack tries to guess passwords by trying common words?

Hybrid brute force attacks: these hackers blend outside means with their logical guesses to attempt a break-in. A hybrid attack usually mixes dictionary and brute force attacks. These attacks are used to figure out combo passwords that mix common words with random characters.

Which algorithm is used to create a message digest?

MD5 algorithmMessage Digest and Secure Cash are the standard algorithms to provide data security for multimedia authentication. The MD5 algorithm takes as input a message of arbitrary length and produces as output a 128-bit “fingerprint” or “message digest” of the input message [1].

Which of the following are valid types of password attack quizlet?

Terms in this set (7)Guessing. Simple, repeated attempts using common passwords or known facts about the user.Stealing. Physically or electronically acquiring a users password – can include sniffing of network communications.Dictionary Attack. … Brute Force Attack. … Rainbow Tables. … Hybrid Password Attack. … Birthday Attack.

What are the examples of key stretching algorithms?

What are the examples of key stretching algorithms?BCRYPT: BCRYPT is a password-hashing algorithm based on the Blowfish cipher.PBKDF2: PBKDF2 stores passwords with a random salt and with the password hash using HMAC; it then iterates, which forces the regeneration of every password and prevents any rainbow table attack.

What are key stretching algorithms?

The concept of key stretching is to insert a random set of characters to increase the size of the password hash, making things harder for a brute-force attack: BCRYPT: BCRYPT is a password-hashing algorithm based on the Blowfish cipher.

eight charactersIt goes without saying that using this method, it will be easier to guess a short password than a longer one because there are fewer possible combinations. For this reason, most security experts recommend that passwords have a minimum required length (for example, eight characters).