The following is a simple tutorial to see if you can recap some of the key terms used in the Unit.
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1 |
An asymmetric encryption algorithm has two encryption keys, one to encrypt,
and then the other to decrypt. Which is an asymmetric encryption method:
Not answered
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2 |
A symmetric encryption algorithm has one encryption key, where the same
key is used to encypt and decrypt. One issue is thus how to generated the shared
key. Which is a symmetric encryption method:
Not answered
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3 |
A symmetric encryption algorithm has one encryption key, where the same key is
used to encypt and decrypt. One issue is thus how to generated the shared key.
One way is to use an algorithm in which the two parties communicate some
parameters and at the end of this communication they have the same shared key.
Which is a method to generate the same shared key:
Not answered
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4 |
There are many applications where we need to determine that a digital object has
not been changed. One way of doing with is with a one-way function, in
order to created a digital fingerpring. Which of the following produces a
digital hash signature:
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5 |
Often we require to convert a binary file into a format which uses plain text,
which can be easily viewed or edited. This involves encoding the data
into a plain text format. Which of the following is an encoding format:
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6 |
One of the simplest cipher codes is simply to move the letters of the alphabet a
number of spaces back or forward. Which is the name commonly associated
with this cipher:
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7 |
A fairly complex code is where the letters of the alphabet are scrambled
for their mapping. This produces a large number of possible variations, but the
method suffers from counting the frequency of the cipher text letters. Which is
this cipher method:
Not answered
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8 |
A key weakness in many cipher codes is that the same cipher character will appear
for the same plain text character. Which cipher method uses a different character
mapping row which is defined by a secret key:
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9 |
A key weakness in major cipher codes is that the same cipher character will
appear for the same plain text character. Which cipher method uses a number of
cipher characters to map the plain text character, where the number of
characters used for the mapping depends on the frequency of occurrance of the plain text character:
Not answered
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10 |
A symmetric encryption algorithm has one encryption key, where the same
key is used to encrypt and decrypt. Which is an symmetric encryption method:
Not answered
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11 |
A symmetric encryption algorithm has one encryption key, where the same
key is used to encrypt and decrypt. Which is an symmetric encryption method:
Not answered
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12 |
With encryption keys, how many encryption keys are possible with a 10-bit encryption key size:
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12 |
With encryption keys, how many encryption keys are possible with a 20-bit encryption key size:
Not answered
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12 |
An symmetric encryption algorithm has one encryption key, where the same
key is used to encrypt and decrypt. Which is an symmetric encryption method:
Not answered
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