ECES Cryptography Algorithms keys/block size 100% Correct

ECES Cryptography Algorithms keys/block size 100% Correct DES 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) Symmetric Block Key size: 56 Block size: 64 Performs DES function 3 times w/ 3 different keys. DESx 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) Symmetric Block Key size: 128, 192, or 256 Block size: 128 Designated FIPS 197 Substitution-permutation matrix Blowfish Symmetric Block Key size: variable from 32 to 448 Block size: 64 16 round Feistel Cipher Serpent Symmetric Block Key size: 128, 192, or 256 Block size: 128 Substitution-permutation network Twofish Symmetric Block Key size: up to 256 Block size: 128 Feistel Cipher DES replacement finalist Skipjack Symmetric Block Key size: 80 Block size: 64 Unbalanced Feistel w/ 32 rounds International Data Encryption Algorithm (IDEA) Symmetric Block Key size: 128 Block size: 64 Published 1991 CAST-128 and CAST-256 Symmetric Block Key size: 40 to 128 (in 8 bit increments) Block size: 64 Candidate in DES replacement contest Tiny Encryption Algorithm (TEA) Symmetric Block Key size: 128 Block size: 64 Feistel cipher w/ 64 rounds (suggested) RSA Asymmetric Key size: 1024, 2048, 4096 and larger Public Key algorithm designed in 1977 Elliptic Curve Asymmetric Key size: 384 (for Top Secret) y2 = x3 + Ax + B Elgamal Asymmetric Probabilistic, any given plaintext can be encrypted to many ciphertexts. Based on Diffie-Hellman MD5 Hashing algorithm 128-bit hash Specified by RFC 1321 Deprecated in 1996 in favor of SHA-1 MD6 Hashing algorithm Uses Merkle tree-like structure for parallel computation of long inputs. Submitted for NIST SHA-3 competition but later pulled due to speed concerns. Secure Hash Algorithm (SHA) Hashing algorithm(s) SHA-1: 160-bit hash function SHA-2: two different hash functions w/ differing block sizes, SHA-256(32 byte words) and SHA-512 (64 byte words) Designated FIPS 180 (180-1, 180-2, etc) FORK-256 Hashing algorithm 512-bit blocks Blocks are hashed in to a 256-bit block through 4 branches by dividing into sixteen 32-bit words. Still in analysis phase and not in widespread use. RIPEMD-160 Hashing algorithm 128, 256, and 320 bit versions of this algorithm Original version was deprecated due to collision issues. GOST Hashing algorithm Produces fixed-length output of 256 bits Block sizes less than 256 bits are padded with 0s Russian national standard GOST R 34.11-94 TIGER Hashing algorithm 192 bit function Uses Merkle-Damgard construction (paradigm) Collision resistant RC4 Symmetric Stream Cipher Key: variable from 1 to 256 bytes Most widely used software stream cipher FISH Symmetric Stream Uses Lagged Fibonnaci and shrinking generator ciphers. Made by Siemans in 1993 PIKE Symmetric Stream Faster and stronger than FISH SHARK Symmetric Block Key size: 128 Block size: 64 6 round operation, shares some similarities with AES such as the use of S-boxes.