EC-Council Certified Encryption Specialist (ECES) questions with correct answers

What is cryptography? - correct answer Noun - A) The process or skill of communicating in or deciphering secret writings or ciphers B) Secret writing Origin - Cryptography (or cryptology); derived from word kryptos which means "hidden", and grafo, which means "write", is the study of message secrecy Definition- Cryptography is the science of altering communication so that it cannot be understood without having the key Interloper - correct answer a person who becomes involved in a place or situation where they are not wanted or are considered not to belong. History of cryptography - correct answer A) Hidden or secret writing is very old: People have been practicing hidden writing for at least 3,000 years. B) Until the latter part of the 20th century, cryptography was almost exclusively used by military and government Mono-Alphabetic Substitution - correct answer A) Most primitive cryptographic algorithms B) Substitute one character of cipher text for each character of plain text C) Caesar Cipher, Atbash Cipher, Affine Cipher, Rot13 Cipher Caesar Cipher - correct answer A) First used by Julius Caesar B) Every letter is shifted a fixed number of spaces to the left or the right in the alphabet C) The shifting is the "key" for this algorithm D) The shift is often called the "alphabet" being used. Example "I Like Computers" shift 1 to left becomes "H Khjd Bnlotsdqr"