Base Conversion
Hexadecimal to binary
cfw_base 16 to base 2
Using this chart, for each hex digit write the corresponding 4-bit binary
sequence.
Binary to hexadecimal
cfw_base 2 to base 16
Using this chart, going from right to left, for each 4-bit binary s
Encrypting Passwords
The basic idea:
To increase security, on most systems passwords are never stored in the
clear. Instead, as soon as a password is entered, it is encrypted using a
particular encryption algorithm. And, instead of storing the password, i
Number Bases
CSC111 Fall 2012
Preliminary info:
div is integer division; i.e., quotient without the remainder
35 div 8 = 4
mod is remainder upon division; i.e., remainder without the quotient
35 mod 8 = 3
binary is the base 2 number system
hexadecimal is