ECES Certified Encryption Specialist from EC Council questions with correct answers

Mono-Alphabet Cipher - correct answer -this type of cipher substitutes one character of ciphertext for one character of plaintext Ceasar Cipher - correct answer -each letter is shifted a fixed number of spaces to the left or right in the alphabet -the shifting is the "key" -the shift is often called the "alphabet" being used' Atbash - correct answer -hebrew code which substitutes the first letter of the alphabet for the last and the second letter for the second to last, etc. -this basically reverses the alphabet -this was used by hebrew scribes copying the book of Jeremiah Affine Cipher - correct answer -is any single-substitution alphabet cipher where each letter is mapped to some numerical value, permuted with some simple mathematical function, and then converted back to a letter -basic formula is ax+b (mod M) Rot 13 Cipher - correct answer -single alphabet substitution cipher which consists of all characters being rotated 13 characters through the alphabet