oku_kerek_tagy_byr_ret

1

A message is authentic and digitally signed if sent with:

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Which of the following issues is not addressed by Kerberos:

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In Asymmetric-Key Cryptography, two keys, e and d, have a special relationship to

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Substitutional cipers are

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Heart of Data Encryption Standard (DES), is the

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DES stands for

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In symmetric key cryptography, key used by sender and receiver is

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In symmetric-key cryptography, key(s) used for encryption and decryption is/are

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Keys used in cryptography are

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Cryptography can provide

1

Advanced Encryption Standard (AES), has three different configurations with respect to number of rounds and

1

Cryptography algorithms (ciphers) are divided into

1

In Cryptography, original message, before being transformed, is called

1

SHA-l has a message digest of

1

A hash function guarantees integrity of a message. It guarantees that message has not be

1

To check integrity of a message, or document, receiver creates the

1

A digital signature needs a

1

Encryption and decryption provide secrecy, or confidentiality, but not

1

When data must arrive at receiver exactly as they were sent, it is called

1

In Message Integrity, SHA-l hash algorithms create an N-bit message digest out of a message of

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Message privacy means that sender and receiver expect

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Message must be encrypted at sender site and decrypted at the

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In Asymmetric-Key Cryptography, although RSA can be used to encrypt and decrypt actual messages, it is very slow if message is

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An encryption algorithm transforms plaintext into

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A transposition cipher reorders (permutes) symbols in a

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Ciphers of today are called round ciphers because they involve

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RSA stands for

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_______ is the science and art of transforming messages to make them secure and immune to attacks.

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The _______ is a number or a set of numbers on which the cipher operates.

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In a(n) ________ cipher, the same key is used by both the sender and receiver.

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In a(n) ________, the key is called the secret key.

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In a(n) ________ cipher, a pair of keys is used

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The Caesar cipher is a _______cipher that has a key of 3.

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The ________ cipher reorders the plaintext characters to create a ciphertext.

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A(n) ______ is a keyless substitution cipher with N inputs and M outputs that uses a formula to define the relationship between the input stream and the output stream.

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A(n) _______is a keyless transposition cipher with N inputs and M outputs that uses a table to define the relationship between the input stream and the output stream.

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DES is a(n) ________ method adopted by the U.S. government.

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DES has an initial and final permutation block and _________ rounds.

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DES uses a key generator to generate sixteen _______ round keys.

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AES has _____ different configurations

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One commonly used public-key cryptography method is the ______ algorithm.

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The ________ method provides a one-time session key for two parties.

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In symmetric cryptography, which of the following MUST be true:

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Message _____ means that the data must arrive at the receiver exactly as sent.

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Message _______ means that the receiver is ensured that the message is coming from the intended sender, not an imposter.

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________ means to prove the identity of the entity that tries to access the system's resources.

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Digital signature cannot provide ________ for the message.

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Challenge-response authentication can be done using ________.

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A digital signature needs a(n)_________ system.

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The _______ criterion states that it must be extremely difficult or impossible to create the message if the message digest is given.

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Making sure that the data has not been changed unintentionally, due to an accident or malice, is:

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I have a company’s documents which are proprietary and a trade secret. How do I protect them from getting stolen?

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Biometrics represents:

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In asymmetric encryption

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The sender “signs” a message as:

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In encryption:

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AES stands for:

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Authentication is:

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The process to discover plaintext or key is known as

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Output message in cryptography is called:

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Input message in cryptography is called:

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In cryptography

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Secure hash algorithm(SHA) developed by:

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Conventional encryption is:

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In network security:

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DSS stands for:

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Cryptography ensures:

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In network security:

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Network security ensures:

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Encryption protects against:

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Authentication refers to:

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The message is decrypted at ________ - side

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Cryptography relates to ______

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Which of the following is not used for symmetric encryption?

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Finding plaintext, without knowing key is know as:

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Which of the following is a transposition cipher?

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Which of the following is a monoalphabetic cipher?

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RSA involves very large _____ numbers.

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Cryptology means

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Diffie-Hellman key exchange is vulnerable to:

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None of these Which of the following is an example of a passive attack?

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Which kind of service ensures that a message was received from the actual sender not from an attacker?

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Which of the following is an active attack? I. Release of message contents; II. Traffic analysis; III. Modify; IV. Denial of Service

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The method of hiding the secret is called

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It is the art of breaking the cipher

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The field which deals with _____ called cryptography

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What would be the number of rounds in AES, if the key size is 24 bytes?

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What would be the number of rounds in AES, if the key size is 32 bytes?

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Which of the following step is absent in the last round of AES?

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DES algorithm uses total ______ subkeys

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The total number of rounds in DES algorithm.

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Which of the following method provides a one-time session key for two parties?

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What is the size of round key for DES algorithm?

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What is the purpose of access control list?

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Define a subject of Access Control List

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Define an object of Access Control List

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What does multilevel security mean?

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How many levels are covered in multilevel security

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No read up (read down) means

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No write down (write up) means

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What does “computationally infeasible to find data mapping to specific hash” mean?

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Which of the following is not property of hash functions?

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The purpose of hash function is to

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Which of the following refers requirement of digital signature?

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Which of the following refers requirement of digital signature?

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What is the property of direct digital signature?

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Define AAA.

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Which of the term refers to authorization?

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Which of the term refers to accounting?

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Define X.509

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Define a Kerberos

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Which of the following does not refer for Kerberos property

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How BruteForce works

Computer Science Test sobre oku_kerek_tagy_byr_ret, creado por Daniyar Adilkhanov el 17/05/2018.

oku_kerek_tagy_byr_ret

A message is authentic and digitally signed if sent with:

Which of the following issues is not addressed by Kerberos:

In Asymmetric-Key Cryptography, two keys, e and d, have a special relationship to

Substitutional cipers are

Heart of Data Encryption Standard (DES), is the

DES stands for

In symmetric key cryptography, key used by sender and receiver is

In symmetric-key cryptography, key(s) used for encryption and decryption is/are

Keys used in cryptography are

Cryptography can provide

Advanced Encryption Standard (AES), has three different configurations with respect to number of rounds and

Cryptography algorithms (ciphers) are divided into

In Cryptography, original message, before being transformed, is called

SHA-l has a message digest of

A hash function guarantees integrity of a message. It guarantees that message has not be

To check integrity of a message, or document, receiver creates the

A digital signature needs a

Encryption and decryption provide secrecy, or confidentiality, but not

When data must arrive at receiver exactly as they were sent, it is called

In Message Integrity, SHA-l hash algorithms create an N-bit message digest out of a message of