The cryptographic strength of a Feistel cipher derives from three aspects of the design: the function F, the key schedule algorithm, and __________ . ?

To log on to the computer system, enter your ________, which identifies you to the computer or operating system

A) Firstname B) User name C) Lastname D) Password

Changes like row insertion, column insertion, and column widening are NOT made to all the worksheets in a group

Indicate whether the statement is true or false.