ECES Certified Encryption Specialist

ECES Certified Encryption Specialist from EC Council| 207 questions| with complete solutions Last document update:   ago

Mono-Alphabet Cipher CORRECT ANSWERS: -this type of cipher substitutes one character of ciphertext for one character of plaintext Ceasar Cipher CORRECT ANSWERS: -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 ANSWERS: -hebrew code which substitutes the first letter of the alphabet for the last and the second letter for the second to last, etc. ...

ECES Certified Encryption Specialist Review| 109 questions| with complete solutions Last document update:   ago

What term below best describes an attack in which the attacker obtains ciphertext corresponding to a set of plaintexts to use in an attempt to derive the key used? CORRECT ANSWERS: Chosen plaintext Which attack is like a chosen-plaintext attack, except the attacker can obtain ciphertexts encrypted under two different keys? CORRECT ANSWERS: Related-key Attack What is a known plaintext attack and uses a linear approximation to describe the behavior of the block cipher and was invented by M...