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EC-COUNCIL 212-81 Exam Syllabus Topics:

Topic Details
Topic 1
  • Shiva Password Authentication Protocol (S-PAP)
  • Challenge-Handshake Authentication Protocol (CHAP)
Topic 2
  • Symmetric Block Cipher Algorithms
  • Basic Facts of the Feistel Function
Topic 3
  • Birthday Paradox: Probability
  • Mono-Alphabet Substitution
Topic 4
  • Cracking Modern Cryptography
  • Example of Symmetric Stream Ciphers: PIKE
Topic 5
  • Introduction and History of Cryptography
  • Breaking the Vigenère Cipher
Topic 6
  • Information Theory Cryptography Concepts
  • Multi-Alphabet Substitution
Topic 7
  • Cracking Modern Cryptography: Ciphertext-only and Related-key Attack
  • Cracking Modern Cryptography: Chosen Plaintext Attack

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EC-COUNCIL Certified Encryption Specialist Sample Questions (Q148-Q153):

NEW QUESTION # 148
This is a proprietary version of PAP. Encrypts username and password as it is sent across network.

  • A. PPTP VPN
  • B. Kerberos
  • C. S-PAP
  • D. WPA2

Answer: C Explanation:
S-PAP
Shiva Password Authentication Protocol (S-PAP) - PAP with encryption for the usernames/passwords that are transmitted.
Incorrect answers:
Kerberos - a computer-network authentication protocol that works on the basis of tickets to allow nodes communicating over a non-secure network to prove their identity to one another in a secure manner. Its designers aimed it primarily at a client-server model and it provides mutual authentication-both the user and the server verify each other's identity. Kerberos protocol messages are protected against eavesdropping and replay attacks.
WPA2 - (Wi-Fi Protected Access II) security certification program developed by the Wi-Fi Alliance to secure wireless computer networks. It includes mandatory support for CCMP, an AES-based encryption mode.
PPTP VPN - works at layer 2 (data link) layer of OSI model. Provides both authentication and encryption. EAP or CHAP is used to provide the authentication for PPTP. MPPE (Microsoft Point to Point Encryption) is used to encrypt the traffic. MPPE - a specific Microsoft implementation of DES. Can only use over a traditional Ethernet network.
NEW QUESTION # 149
The concept that if one bit of data changes, the cipher text will all completely change as well.

  • A. Substitution
  • B. Confusion
  • C. Collision
  • D. Avalanche

Answer: D Explanation:
Avalanche
https://en.wikipedia.org/wiki/Avalanche_effect
In cryptography, the avalanche effect is the desirable property of cryptographic algorithms, typically block ciphers and cryptographic hash functions, wherein if an input is changed slightly (for example, flipping a single bit), the output changes significantly (e.g., half the output bits flip). In the case of high-quality block ciphers, such a small change in either the key or the plaintext should cause a drastic change in the ciphertext. The actual term was first used by Horst Feistel, although the concept dates back to at least Shannon's diffusion.
Incorrect answers:
Confusion - Confusion means that each binary digit (bit) of the ciphertext should depend on several parts of the key, obscuring the connections between the two.
The property of confusion hides the relationship between the ciphertext and the key.
This property makes it difficult to find the key from the ciphertext and if a single bit in a key is changed, the calculation of the values of most or all of the bits in the ciphertext will be affected.
Confusion increases the ambiguity of ciphertext and it is used by both block and stream ciphers.
Substitution - method of encrypting by which units of plaintext are replaced with ciphertext, according to a fixed system; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth. The receiver deciphers the text by performing the inverse substitution.
Collision - occurs when a hash function generates the same output for different inputs.
NEW QUESTION # 150
Which of the following is an asymmetric algorithm related to the equation yBTW, DOWNLOAD part of ITdumpsfree 212-81 dumps from Cloud Storage: https://drive.google.com/open?id=17rPdP84kY0kHQnFrnorA-Uw6IOXG1L