quiz1 - Cryptography provides security through obscurity...

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Cryptography provides security through obscurity. Select one: True False In a symmetric cipher, different key are used by the sender and receiver. Select one: True False Its a good cipher if breaking cost is very large that encrypted data cost. Select one: True False Range of possible values used to construct keys is called key space. Select one: True False Steganography hides secret message in other message. Select one: True False Transposition cipher rearrange the letters order of a message. Select one: True False Security Services integrity assures that data received is a as sent by an authorized entity. Select one: True
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False According kerchoff's principle, a cryptosystem should be secure even if the attacker knows all details about the system, with the exception of the secret key. Select one: True False Security services non-repudiation protect against denial by one of the parties in a communication.
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  • Spring '12
  • NA
  • Cryptography, security services, Substitution cipher, Security Services integrity

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