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Block Cipher

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Block Cipher

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Created by

dany
dany
Czech Republic

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Block Cipher
 

Block CipherOnline version

True or False

by dany
1

A block cipher processes data in fixed-size blocks, such as 128 bits

2

DES uses 56-bit keys

3

In a Feistel network, the input block is split into two parts

4

In Feistel ciphers, encryption and decryption use similar operations

5

AES is based on an SP-network composed of SubByte, ShiftRow, MixColumn and AddRoundKey

6

In a Feistel round, the round function is applied to the left half of the data

7

The XOR operation is used inside both Feistel and SP networks

8

The SubByte operation in AES is based on an S-Box

9

The Feistel structure allows the same algorithm to be used for encryption and for decryption

10

AES always uses 128-bit blocks regardless of the key size

 
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