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Certified Encryption Specialist Latest Update October 2024 Cryptography - Answer--The science of altering communication so that it cannot be understood without having a key. Caesar Cipher - Answer--Simple cipher that uses shifting letters. Atbash - Answer$13.99
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Certified Encryption Specialist Latest Update October 2024 Cryptography - Answer--The science of altering communication so that it cannot be understood without having a key. Caesar Cipher - Answer--Simple cipher that uses shifting letters. Atbash - Answer
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Zabbix Certified Specialist Day 2
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Zabbix Certified Specialist Day 2
Certified Encryption Specialist Latest Update October 2024
Cryptography - Answer--The science of altering communication so that it cannot be understood without having a key.
Caesar Cipher - Answer--Simple cipher that uses shifting letters.
Atbash - Answer--Used by Hebrews, cipher that reverses t...
Certified Encryption Specialist Latest
Update October 2024
Cryptography - Answer--The science of altering communication so that it cannot be understood without
having a key.
Caesar Cipher - Answer--Simple cipher that uses shifting letters.
Atbash - Answer--Used by Hebrews, cipher that reverses the alphabet.
ROT13 - Answer--Cipher that rotate or shifts by 13 letters.
Scytale - Answer--Cylinder tool used to encrypt and decrypt plaintext using a cloth or piece of leather
wrapped around a rod.
Complete Avalanche - Answer--A change in one bit of the plaintext affecting all bits in the ciphertext.
Kerckhoffs Principle - Answer--The crypto system should be secure if everything about the system,
except the key, is publicly known.
Substitution - Answer--Changing some part of the plaintext for some matching part of the ciphertext.
Transposition - Answer--Swapping of blocks of ciphertext.
,Binary ADD - Answer--Stack both binary numbers; If both numbers are 1 then it's 1, otherwise it's 0.
Binary OR - Answer--Stack both binary numbers; If either is a 1 then it's 1, otherwise it's 0.
Binary XOR - Answer--Stack both binary numbers; If their is a 1 in one number but not the other then it's
a 1, otherwise its 0.
This is reversible.
Vigenere Cipher - Answer--Most common multi-alphabetic cipher.
Symmetric Encryption - Answer--Same key is used to Encrypt and Decrypt plaintext.
Also known as Single Key Encryption.
Diffusion - Answer--Changes to one letter in plaintext changes multiple characters of the ciphertext.
Confusion - Answer--Makes the relationship between the statistical frequencies of the ciphertext and
the actual key as complex as possible.
Avalanche - Answer--A small change in the input yields a large change in the output.
Block Cipher - Answer--Encrypts the information in blocks.
Stream Cipher - Answer--Encrypts the information one bit at a time.
DES - Answer--Data Encryption Standard
DES (Characteristics) - Answer--Made by IBM in 1970's.
64 bit Block Cipher.
, 56 Bit Key.
Uses Feistal Cipher.
Feistal Function - Answer--64 Bits split Left and Right, Round function to one side, XORed with the other
side then sides are Transposed or switched.
AES (Characteristics) - Answer--Replaced DES in 2001.
Capable of Key sizes 128 bit, 192 bit, and 256 bit.
128 bit Block Size.
Developed by Joan Daemen and Vincent Rimen.
Designated as FIPS 197.
Based on substitution-permutation matrix.
Blowfish (Characteristics) - Answer--Capable of Key sizes 32 to 448 bits.
64 bit Block Size.
Developed by Bruce Schneier.
Based on Feistal Cipher using 16 rounds.
Serpent (Characteristics) - Answer--Capable of Key sizes 128 bit, 192 bit, and 256 bit.
128 bit Block Size.
Developed by Ross Anderson, Eli Biham, and Lars Knudson.
Based on substitution-permutation similar to AES
Designed to execute all operations in parallel.
Twofish (Characteristics) - Answer--Capable of Key sizes up to 256 bits.
128 bit Block Size.
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