COMPUTER ETHICS AND SECURITY
CRYPTOGRAPHY AND ENCRYPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Detect unauthorised changes to message
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Authenticate sender’s identity
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Only the intended recipient can decrypt the message
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Signature can be used to provide secure encryption key
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Detailed explanation-1: -Digital signatures use encryption technology to ensure the signature is tamper-proof and cannot be duplicated or forged. In addition, they provide non-repudiation, which is the ability to prove that the signer sent a message and that the contents of the message have not been altered since it was signed.
Detailed explanation-2: -The three main benefits of digital signature include increased contract speed, enhanced security, and lower transaction costs.
Detailed explanation-3: -As we have said, digital signatures are used for authentication, to see whether data has been tampered with, and to provide non-repudiation.
Detailed explanation-4: -One of the main differences is that Message Authentication Codes don’t prove authorship of the message. Imagine the situation, when Bob sent a signed contract to Alice. In case of digital signature Alice can go to court claiming that Bob has signed the contract.
Detailed explanation-5: -Higher security. Legal compliance and wide acceptance. Time savings. Workflow automation. Cost savings. Happier end-users. Better company image and CSR.