COMPUTER FUNDAMENTALS

COMPUTER ETHICS AND SECURITY

CRYPTOGRAPHY AND ENCRYPTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Today’s secure communications are encrypted using ____ bit keys.
A
156
B
10
C
356
D
256
Explanation: 

Detailed explanation-1: -A hacker or cracker will require 2256 different combinations to break a 256-bit encrypted message, which is virtually impossible to be broken by even the fastest computers. Typically, 256-bit encryption is used for data in transit, or data traveling over a network or Internet connection.

Detailed explanation-2: -The AES Encryption algorithm (also known as the Rijndael algorithm) is a symmetric block cipher algorithm with a block/chunk size of 128 bits. It converts these individual blocks using keys of 128, 192, and 256 bits. Once it encrypts these blocks, it joins them together to form the ciphertext.

Detailed explanation-3: -The answer is 78-digits. That’s how many possible key combinations can exist in AES-256. More numbers than a modern scientific calculator can calculate. If a computer tries breaking AES 256 via brute force that is the number of unique combinations it needs to try in order to be successful.

Detailed explanation-4: -A secure 256 bit encryption technology is used to secure online communication between two nodes by encrypting the data with a 256 bit long key. Modern encryption protocols, including SSL/TLS and AES, use 256 bit encryption for building a secured communication channel.

There is 1 question to complete.