EC-COUNCIL Certified Encryption Specialist - 212-81 Exam Practice Test
Protocol suite provides a method of setting up a secure channel for protected data exchange between two devices.
Correct Answer: C
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Which one of the following is a component of the PKI?
Correct Answer: D
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A part of understanding symmetric cryptography understands the modes in which it can be used. You are explaining those modes to a group of cryptography students. The most basic encryption mode is____________.
The message is divided into blocks, and each block is encrypted separately with no modification to the process.
The message is divided into blocks, and each block is encrypted separately with no modification to the process.
Correct Answer: A
Hash algortihm created by the Russians. Produces a fixed length output of 256bits. Input message is broken up into 256 bit blocks. If block is less than 256 bits then it is padded with 0s.
Correct Answer: A
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A _____ is a function that takes a variable-size input m and returns a fixed-size string.
Correct Answer: D
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A type of frequency analysis used to attack polyalphabetic substitution ciphers. It's used to try to discover patterns and use that information to decrypt the cipher.
Correct Answer: C
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Bruce Schneier is a well-known and highly respected cryptographer. He has developed several pseudo random number generators as well as worked on teams developing symmetric ciphers. Which one of the following is a symmetric block cipher designed in 1993 by Bruce Schneier team that is unpatented?
Correct Answer: A
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Which of the following acts as a verifier for the certificate authority?
Correct Answer: D
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The concept that if one bit of data changes, the cipher text will all completely change as well.
Correct Answer: C
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Cylinder tool. Wrap leather around to decode. The diameter is the key. Used in 7th century BC by greek poet Archilochus.
Correct Answer: B
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Which of the following areas is considered a strength of symmetric key cryptography when compared with asymmetric algorithms?
Correct Answer: C
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Message hidden in unrelated text. Sender and receiver have pre-arranged to use a pattern to remove certain letters from the message which leaves only the true message behind.
Correct Answer: A
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