ECES Cryptography Algorithms keys/block size questions and answers already passed 100%

DES <<Ans>> Symmetric Block Key size: 56 Block size: 64 Feistel Cipher w/ 16 rounds, 48 bit key for each round. Use of 8 S-boxes 3DES (Triple DES) <<Ans>> Symmetric Block Key size: 56 Block size: 64 Performs DES function 3 times w/ 3 different keys. DESx <<Ans>> Variation of DES that employs key whitening. XOR a 64 bit key with the text before the round function, after or both. Advanced Encryption Standard (AES) <<Ans>> Symmetric Block Key size: 128, 192, or 256 Block size: 128 Designated FIPS 197 Substitution-permutation matrix Blowfish <<Ans>> Symmetric Block Key size: variable from 32 to 448 Block size: 64 16 round Feistel Cipher Serpent <<Ans>> Symmetric Block Key size: 128, 192, or 256 Block size: 128 Substitution-permutation network Twofish <<Ans>> Symmetric Block Key size: up to 256 Block size: 128 Feistel Cipher DES replacement finalist Skipjack <<Ans>> Symmetric Block Key size: 80 Block size: 64 Unbalanced Feistel w/ 32 rounds International Data Encryption Algorithm (IDEA) <<Ans>> Symmetric Block