COMPUTER ETHICS AND SECURITY
CRYPTOGRAPHY AND ENCRYPTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
True
|
|
|
False
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Salting. This technique adds a random string of characters to passwords before encrypting them. Rainbow table attacks work under the assumption that a text string has one specific hash value; the extra generated characters change that expected hash value.
Detailed explanation-2: -The rainbow table itself refers to a precomputed table that contains the password hash value for each plain text character used during the authentication process. If hackers gain access to the list of password hashes, they can crack all passwords very quickly with a rainbow table.
Detailed explanation-3: -If a hacker gains access to a system’s password database, they can use the rainbow table to compare hashed passwords to potential hashes in the table. The rainbow table then gives plain text possibilities with each hash, which the hacker can use to access an account.