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The Certified Encryption Specialist certification is ideal for professionals who are looking to enhance their knowledge and skills in the field of encryption. The certification is suitable for individuals who are involved in the development and implementation of encryption technologies, such as software developers, network administrators, security analysts, and system engineers. The certification is also suitable for individuals who are involved in the management of encryption technologies, such as IT managers, security managers, and compliance officers.
The EC-COUNCIL 212-81 exam is a computer-based test that consists of 50 multiple-choice questions. The exam is timed, and candidates have 75 minutes to complete it. The passing score for the exam is 70%. The exam can be taken at any Pearson VUE testing center around the world.
To qualify for the EC-COUNCIL 212-81 (Certified Encryption Specialist) Exam, candidates need to have a basic understanding of computer networks, security concepts, and encryption technologies. They should also be familiar with different types of encryption algorithms, their strengths, and weaknesses. The exam consists of 50 multiple-choice questions and has a duration of 2 hours. Candidates need to score at least 70% to pass the exam and earn the certification. The certification is valid for three years, after which candidates need to renew it by completing the EC-Council Continuing Education Program (ECE) or retaking the exam. By obtaining this certification, candidates can enhance their career prospects and demonstrate their commitment to staying up-to-date with the latest encryption technologies.
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EC-COUNCIL Certified Encryption Specialist Sample Questions (Q96-Q101):NEW QUESTION # 96
RFC 1321 describes what hash?
Answer: C
Explanation:
MD5
https://en.wikipedia.org/wiki/MD5
MD5 was designed by Ronald Rivest in 1991 to replace an earlier hash function MD4, and was specified in 1992 as RFC 1321.
NEW QUESTION # 97
Ahlen is using a set of pre-calculated hashes to attempt to derive the passwords from a Windows SAM file. What is a set of pre-calculated hashes used to derive a hashed password called?
Answer: D
Explanation:
Rainbow table
https://en.wikipedia.org/wiki/Rainbow_table
A rainbow table is a precomputed table for caching the output of cryptographic hash functions, usually for cracking password hashes. Tables are usually used in recovering a key derivation function (or credit card numbers, etc.) up to a certain length consisting of a limited set of characters. It is a practical example of a space-time tradeoff, using less computer processing time and more storage than a brute-force attack which calculates a hash on every attempt, but more processing time and less storage than a simple key derivation function with one entry per hash. Use of a key derivation that employs a salt makes this attack infeasible.
NEW QUESTION # 98
Which of the following is the standard for digital certificates?
https://en.wikipedia.org/wiki/X.509C. X.509D. CRLE. RFC 2298F. CA
Answer: C
NEW QUESTION # 99
A cryptographic hash function which uses a Merkle tree-like structure to allow for immense parallel computation of hashes for very long inputs. Authors claim a performance of 28 cycles per byte for MD6-256 on an Intel Core 2 Duo and provable resistance against differential cryptanalysis.
Answer: A
Explanation:
MD6
https://en.wikipedia.org/wiki/MD6
The MD6 Message-Digest Algorithm is a cryptographic hash function. It uses a Merkle tree-like structure to allow for immense parallel computation of hashes for very long inputs. Authors claim a performance of 28 cycles per byte for MD6-256 on an Intel Core 2 Duo and provable resistance against differential cryptanalysis.[2] The source code of the reference implementation was released under MIT license.
Speeds in excess of 1 GB/s have been reported to be possible for long messages on 16-core CPU architecture.
In December 2008, Douglas Held of Fortify Software discovered a buffer overflow in the original MD6 hash algorithm's reference implementation. This error was later made public by Ron Rivest on 19 February 2009, with a release of a corrected reference implementation in advance of the Fortify Report.
NEW QUESTION # 100
A cryptanalysis success where the attacker deduces the secret key.
Answer: A
Explanation:
Total Break
https://en.wikipedia.org/wiki/Cryptanalysis
The results of cryptanalysis can also vary in usefulness. For example, cryptographer Lars Knudsen (1998) classified various types of attack on block ciphers according to the amount and quality of secret information that was discovered:
Total break - the attacker deduces the secret key.
Global deduction - the attacker discovers a functionally equivalent algorithm for encryption and decryption, but without learning the key.
Instance (local) deduction - the attacker discovers additional plaintexts (or ciphertexts) not previously known.
Information deduction - the attacker gains some Shannon information about plaintexts (or ciphertexts) not previously known.
Distinguishing algorithm - the attacker can distinguish the cipher from a random permutation.
Incorrect answers:
Shannon's Entropy - average level of "information", "surprise", or "uncertainty" inherent in the variable's possible outcomes. The concept of information entropy was introduced by Claude Shannon in his 1948 paper "A Mathematical Theory of Communication".
Avalanche effect - 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.
NEW QUESTION # 101
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