ECES Practice Quiz (2022/2023) Rated A+

a data concealment method for covert communications that makes use of LSB replacement <<Ans>> Steganography 12 % 5 Modulus Math <<Ans>> 2 Symmetrical encryption is expressed mathematically as <<Ans>> C = E(k,p) Tiger Hash Value <<Ans>> 192-bit SHA256 Hash Value <<Ans>> 128-bit FORK256 Hash Value <<Ans>> 256-bit SHA1 Hash Value <<Ans>> 160-bit GOST Hash Value <<Ans>> 256-bit MD5 Hash Value <<Ans>> 128-bit RIPEMD-160 Hash Value <<Ans>> 160-bit AES Symmetric Block Cipher key and block size <<Ans>> 128-bit blocks: 128, 192 or 256 bit key IDEA Symmetric Block Cipher key and block size <<Ans>> 64-bit blocks; 128 bit key DES Symmetric Block Cipher key and block size <<Ans>> 64-bit blocks; 56 bit key Blowfish Symmetric Block Cipher key and block size <<Ans>> 64-bit blocks; 32-448 bit key Twofish Symmetric Block Cipher key and block size <<Ans>> 128-bit blocks; 1-256 bit key Skipjack Symmetric Block Cipher key and block size <<Ans>> 64-bit blocks; 80 bit key Serpent Symmetric Block Cipher key and block size <<Ans>> 128 bit blocks; 128, 192 or 256 bit key Asymmetric encryption algorithms <<Ans>> RSA, ECC, DSA Symmetric stream ciphers <<Ans>> FISH, PIKE, RC4