Authentication and Identification: User authentication Flashcards
1
Q
What types of authentication factors are there?
A
Something a user knows (secret): password, PIN, etc.
Something a user has (possesion): token, key, etc.
Something a user is (biometrics): fingerprint, iris, etc.
2
Q
In the context of password storage, what is meant by salt?
A
Salt is a random value that is added to the password before the password is hashed. As a result, two passwords that are identical will be stored as different hashes.
3
Q
What is Bloom Filter?
A
A data structure that is used to test whether an element is a member of a set.
Can be used in proactive password checking, where you check if the specified password is in a list of “bad” passwords.
