EC Council - Certified Encryption Specialist
UPDATED ACTUAL Exam Questions and
CORRECT Answers
DSA - CORRECT ANSWER - FIPS 186
AES - CORRECT ANSWER - FIPS 197
MD5 - CORRECT ANSWER - RFC1321
GOST - CORRECT ANSWER - GOST 281747
Block Ciphers - CORRECT ANSWER - Examples include: AES, TwoFish, Serpent, Skipjack,
DES, 3DES
Stream Ciphers - CORRECT ANSWER - Examples include: RC4, FISH, Pike
Hash Functions - CORRECT ANSWER - Examples include: MD5, MD6, SHA-1, SHA-2,
SHA-3, FORK-256, RIPEMD-160, GOST, TIGER
Asymmetric cryptography - CORRECT ANSWER - Also called public key cryptography
Symmetric Stream Cipher - CORRECT ANSWER - Also called State Ciphers
Symmetric cryptography - CORRECT ANSWER - Single private key used to encrypt and
decrypt
,Random Number Generators - CORRECT ANSWER - Table look-up, Hardware, Algorithmic
(software)
K1 - CORRECT ANSWER - Random numbers with low probability of identical consecutive
elements
K2 - CORRECT ANSWER - Random numbers indistinguishable from "true random"
numbers
K3 - CORRECT ANSWER - Impossible for attacker to calculate or guess previous/future
number in sequence
K4 - CORRECT ANSWER - Impossible for attacker to calculate or guess from inner state of
the generator any previous numbers or previous inner generator states
Crypography - CORRECT ANSWER - Study of message security
Cryptography - CORRECT ANSWER - In practice for over 3000 years, mostly by military or
governments until the late 20th century
Plain text - CORRECT ANSWER - Unaltered text
Cipher text - CORRECT ANSWER - Encrypted text
Mono-Alphabet Substitution - CORRECT ANSWER - Examples include: Caesar, Atbash,
ROT13
Caesar - CORRECT ANSWER - Cipher used by Julius Caesar
, Caesar - CORRECT ANSWER - Cipher where every letter in message is shifted a fixed x
number to the right or left
Mono-Alphabet Substitution - CORRECT ANSWER - Type of Algorithm which substitutes 1
character of cipher text for 1 character of plain text
Mono-Alphabet Substitution - CORRECT ANSWER - Category of algorithms that are
primitive, not secure and subject to frequency attacks
Atbash - CORRECT ANSWER - Cipher used by Hebrew scholars copying the book of
Jeremiah from the Bible
Atbash - CORRECT ANSWER - Cipher where alphabet is reversed
ROT13 - CORRECT ANSWER - Cipher where letters are rotated 13 characters
Scytale - CORRECT ANSWER - Cipher used by the greeks and described in the 7th century
by Archilochus
Scytale - CORRECT ANSWER - Cipher where parchment is wrapped around a rod; the
recipient must have a matching rod of the same diameter and a leather "key" is wrapped around
to decode the message
Multi-Alphabet Subsitution - CORRECT ANSWER - Examples include: CipherDisk,
Vigenere, Playfair, ADFGVX, Enigma, TypeX, and SIGABA
CipherDisk - CORRECT ANSWER - Created by Leon Alberti in 1466
CipherDisk - CORRECT ANSWER - Poly-alphabetic cipher where a disk is turned to encrypt
plain text
UPDATED ACTUAL Exam Questions and
CORRECT Answers
DSA - CORRECT ANSWER - FIPS 186
AES - CORRECT ANSWER - FIPS 197
MD5 - CORRECT ANSWER - RFC1321
GOST - CORRECT ANSWER - GOST 281747
Block Ciphers - CORRECT ANSWER - Examples include: AES, TwoFish, Serpent, Skipjack,
DES, 3DES
Stream Ciphers - CORRECT ANSWER - Examples include: RC4, FISH, Pike
Hash Functions - CORRECT ANSWER - Examples include: MD5, MD6, SHA-1, SHA-2,
SHA-3, FORK-256, RIPEMD-160, GOST, TIGER
Asymmetric cryptography - CORRECT ANSWER - Also called public key cryptography
Symmetric Stream Cipher - CORRECT ANSWER - Also called State Ciphers
Symmetric cryptography - CORRECT ANSWER - Single private key used to encrypt and
decrypt
,Random Number Generators - CORRECT ANSWER - Table look-up, Hardware, Algorithmic
(software)
K1 - CORRECT ANSWER - Random numbers with low probability of identical consecutive
elements
K2 - CORRECT ANSWER - Random numbers indistinguishable from "true random"
numbers
K3 - CORRECT ANSWER - Impossible for attacker to calculate or guess previous/future
number in sequence
K4 - CORRECT ANSWER - Impossible for attacker to calculate or guess from inner state of
the generator any previous numbers or previous inner generator states
Crypography - CORRECT ANSWER - Study of message security
Cryptography - CORRECT ANSWER - In practice for over 3000 years, mostly by military or
governments until the late 20th century
Plain text - CORRECT ANSWER - Unaltered text
Cipher text - CORRECT ANSWER - Encrypted text
Mono-Alphabet Substitution - CORRECT ANSWER - Examples include: Caesar, Atbash,
ROT13
Caesar - CORRECT ANSWER - Cipher used by Julius Caesar
, Caesar - CORRECT ANSWER - Cipher where every letter in message is shifted a fixed x
number to the right or left
Mono-Alphabet Substitution - CORRECT ANSWER - Type of Algorithm which substitutes 1
character of cipher text for 1 character of plain text
Mono-Alphabet Substitution - CORRECT ANSWER - Category of algorithms that are
primitive, not secure and subject to frequency attacks
Atbash - CORRECT ANSWER - Cipher used by Hebrew scholars copying the book of
Jeremiah from the Bible
Atbash - CORRECT ANSWER - Cipher where alphabet is reversed
ROT13 - CORRECT ANSWER - Cipher where letters are rotated 13 characters
Scytale - CORRECT ANSWER - Cipher used by the greeks and described in the 7th century
by Archilochus
Scytale - CORRECT ANSWER - Cipher where parchment is wrapped around a rod; the
recipient must have a matching rod of the same diameter and a leather "key" is wrapped around
to decode the message
Multi-Alphabet Subsitution - CORRECT ANSWER - Examples include: CipherDisk,
Vigenere, Playfair, ADFGVX, Enigma, TypeX, and SIGABA
CipherDisk - CORRECT ANSWER - Created by Leon Alberti in 1466
CipherDisk - CORRECT ANSWER - Poly-alphabetic cipher where a disk is turned to encrypt
plain text
