Which of the following cryptographic objectives can guarantee that the sender of a message cannot later deny having sent the message and that the recipient cannot deny having received the message?Group of answer choicesConfidentialityNonrepudiationIntegrityAuthentication
Question
Which of the following cryptographic objectives can guarantee that the sender of a message cannot later deny having sent the message and that the recipient cannot deny having received the message?Group of answer choicesConfidentialityNonrepudiationIntegrityAuthentication
Solution
The cryptographic objective that can guarantee that the sender of a message cannot later deny having sent the message and that the recipient cannot deny having received the message is Nonrepudiation.
Here's why:
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Confidentiality: This objective ensures that only the intended recipients can access and understand the data. It doesn't prevent either party from denying the transmission or receipt of the data.
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Nonrepudiation: This objective provides proof of the origin or delivery of data to protect the sender against a false denial by the recipient that the data has been received, or to protect the recipient against a false denial by the sender that the data has been sent. Therefore, this is the correct answer.
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Integrity: This objective ensures that data has not been changed in transit. It doesn't prevent either party from denying the transmission or receipt of the data.
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Authentication: This objective verifies the identity of the parties involved but doesn't prevent them from denying the transmission or receipt
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