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To affix a digital signature to a message, the sender must
first create a message digest by applying a cryptographic
hashing algorithm against:
A. the entire message and thereafter enciphering the message
digest using the sender's private key.
B. any arbitrary part of the message and thereafter
enciphering the message digest using the sender's private key.
C. the entire message and thereafter enciphering the message
using the sender's private key.
D. the entire message and thereafter enciphering the message
along with the message digest using the sender's private key.
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Answer: A
A digital signature is a cryptographic method that ensures
data integrity, authentication of the message, and
non-repudiation. To ensure these, the sender first creates a
message digest by applying a cryptographic hashing algorithm
against the entire message and thereafter enciphers the
message digest using the sender's private key. A message
digest is created by applying a cryptographic hashing
algorithm against the entire message not on any arbitrary
part of the message. After creating the message digest, only
the message digest is enciphered using the sender's private
key, not the message.
| Is This Answer Correct ? | 3 Yes | 0 No |
Which of the following functions should be performed by the application owners to ensure an adequate segregation of duties between IS and end users? A. System analysis B. Authorization of access to data C. Application programming D. Data administration
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A dry-pipe fire extinguisher system is a system that uses: A. water, but in which water does not enter the pipes until a fire has been detected. B. water, but in which the pipes are coated with special watertight sealants. C. carbon dioxide instead of water. D. halon instead of water.
The development of an IS security policy is ultimately the responsibility of the: A. IS department. B. security committee. C. security administrator. D. board of directors.
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