Answer:
Kasiski’s method for determining 't' works for Vigenère cipher as well. The only difference is therefore in the second stage of the attack. In the second stage, one needs to build a frequency table for each of the 't' keys, and carry out an attack like on the mono-alphabetic cipher. Given a long enough plaintext, this will work successfully.
Explanation:
Kasiski method is a method of attacking polyalphabetic substitution ciphers such as Vigenère cipher. It is also called Kasiski test or Kasiski examination.
The method involve finding the length of the keyword and then dividing the message into that many simple substitution cryptograms. Frequency analysis could then be used to solve the resulting simple substitution.
Answer:
True.
Explanation:
If the input message is omitted when creating a data validation rule for a cell, no message will appear when the user selects the cell. Data validation rules are used to define the type of data that can be entered into a cell, and the input message is an optional feature that allows you to provide a custom message to the user when they select the cell. If the input message is not specified, no message will be displayed when the user selects the cell.
Power tools use electricity to run. They need some type of battery or cord to do their job.
