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WGU C839 Flash Cards for OA/77 Questions with complete solutions
WGU C839 Flash Cards for OA/77 Questions with complete solutions
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WGU C839 Flash Cards for OA/77Questions with complete solutions
DES - -64 Bit Block - 56 Bit Key - 16 Rounds
-AES - -128 Bit Block - 128, 192, 256 Bit Key - 10, 12, 14 Rounds
-BlowFish - -64 Bit Block - 32 thru 448 Bit Key - 16 Rounds
-TwoFish - -128 Bit Block - 1 thru 256 Bit Key - 16 Rounds
-Serpent - -128 Bit Block 128, 192, 256 Bit Key - 32 Rounds
-SkipJack - -64 Bit Block - 80 Bit Key - 32 Rounds
-IDEA - -64 Bit Block - 128 Bit Key - 8.5 Rounds
-Symmetric Block Ciphers - -DES - AES - BlowFish - TwoFish - Serpent -
SkipJack - IDEA
-Symmetric Block Ciphers with 64 Bit Block Size - -DES - BlowFish - SkipJack
- IDEA
-Symmetric Block Ciphers with 128 Bit Block Size - -AES - TwoFish - Serpent
-Symmetric Block Ciphers with 128, 192, 256 Bit Key Size - -AES - Serpent
-Symmetric Block Ciphers with 16 Rounds - -DES - BlowFish - TwoFish
-Symmetric Block Ciphers with 32 Rounds - -Serpent - SkipJack
-RC4 - -1 thru 2048 Bit Key Size & 1 Round (40 bit minimum recommended)
-FISH - -Uses Lagged Fibonacci pseudorandom number generator
-PIKE - -Revised version of FISH to address known plaintext attack
vulnerabilities
-Symmetric Stream Ciphers - -RC4 - Fish - Pike
-Asymmetric Encryption Algos - -RSA - ECC - El Gamal - DSA
-RSA - -Leverages prime number characteristics, 1024-4096 bit variable key
size, 1 round. Uses Trapdoor function to enable use for encryption and digital
, signatures. One-way trapdoor functions can be inverted with knowledge of
trapdoor factorization information.
-ECC - -Leverages discrete logarithm characteristics
-El Gamal - -Used in recent versions of PGP
-DSA - -A Federal Information Processing Standard for digital signatures
(FIPS 186)
-Hash Algos - -MD5 - SHA1 - SHA256 - FORK256 - RIPEMD160 - GOST -
TIGER
-MD5 - -128 Bit Hash Value
-SHA1 - -160 Bit Hash Value
-SHA256 - -256 Bit Hash Value
-FORK256 - -256 Bit Hash Value
-GOST - -256 Bit Hash Value
-TIGER - -192 Bit Hash Value
-Key Exchange Algos - -Diffie Hellman (DH) - Menezes-Qu-Vanstone (MQV) -
Key Exchange Algorithm (KEA) - Elliptic Curve DH (ECDH)
-RSA Encryption Formula - -C = Me % n
-RSA Decryption Formula - -P = Cd % n
-EC Formula - -y2 = x3 + Ax + B
-Symmetric Decryption Formula - -P = D(k,c)
-Symmetric Encryption Formula - -C = E(k,p)
-Cipher disk invented by ___ in Year ____ - -Leon Alberti - 1466
-Vigenere Cipher invented by ____ in ____ Year - -Giovan Battista Bellaso -
1553
-Playfair Cipher invented by ____ in ____ Year - -Charles Wheatstone - 1854
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