17.1. Encryption, Encryption Protocols and Digital Certificates
A subsection of Computer Science, 9618, through 17. Security
Listing 9 of 9 questions
A message is to be sent securely. Software uses a key to encrypt the message before it is sent. Give two reasons for using key cryptography. Give two methods of key cryptography that can be used. When there is a secure exchange of key, the message is sent. The use of quantum cryptography is being considered for the secure exchange. State two possible benefits of using quantum cryptography. State two possible drawbacks of using quantum cryptography.
9618_s22_qp_31
THEORY
2022
Paper 3, Variant 1
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A message is to be sent securely. Software uses a key to encrypt the message before it is sent. Give two reasons for using key cryptography. Give two methods of key cryptography that can be used. When there is a secure exchange of key, the message is sent. The use of quantum cryptography is being considered for the secure exchange. State two possible benefits of using quantum cryptography. State two possible drawbacks of using quantum cryptography.
9618_s22_qp_33
THEORY
2022
Paper 3, Variant 3
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Questions Discovered
9