최신 212-81 무료덤프 - EC-COUNCIL Certified Encryption Specialist
Which of the following is used to encrypt email and create digital signatures?
정답: D
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Which of the following uses an 80 bit key on 64 bit blocks?
정답: D
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You are explaining basic mathematics to beginning cryptography students. You are covering the basic math used in RSA. A prime number is defined as
정답: A
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If the round function is a cryptographically secure pseudorandom function, then ___________ rounds is sufficient to make the block cipher a pseudorandom permutation.
정답: B
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Which of the following is the successor of SSL?
정답: D
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The reverse process from encoding - converting the encoded message back into its plaintext format.
정답: B
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The Clipper chip is notable in the history of cryptography for many reasons. First, it was designed for civilian used secure phones. Secondly, it was designed to use a very specific symmetric cipher. Which one of the following was originally designed to provide built-in cryptography for the Clipper chip?
정답: D
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In which of the following password protection technique, random strings of characters are added to the password before calculating their hashes?
정답: C
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With Cipher-block chaining (CBC) what happens?
정답: A
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John works as a cryptography consultant. He finds that people often misunderstand the reality of breaking a cipher. What is the definition of breaking a cipher?
정답: D
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This is a 128 bit hash that is specified by RFC 1321. It was designed by Ron Rivest in 1991 to replace an earlier hash function.
정답: D
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Which of the following is a fundamental principle of cryptography that holds that the algorithm can be publicly disclosed without damaging security?
정답: B
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John is going to use RSA to encrypt a message to Joan. What key should he use?
정답: A
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This hash function uses 512-bit blocks and implements preset constants that change after each repetition. Each block is hashed into a 256-bit block through four branches that divides each 512 block into sixteen 32-bit words that are further encrypted and rearranged.
정답: A
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A 160-bit hash algorithm developed by Hans Dobbertin, Antoon Bosselaers, and Bart Preneel for which there are 128, 256 and 320-bit versions is called what?
정답: D
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Encryption of the same plain text with the same key results in the same cipher text. Use of an IV that is XORed with the first block of plain text solves this problem.
정답: C
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