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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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -The term “Ephemeral key” refers to an asymmetric encryption key designed to be used only for the duration of a single session or transaction. In cryptography, the number of bits in a key used by a cryptographic algorithm is referred to as a key size or key length.
Detailed explanation-2: -Public-key (asymmetric) cryptography requires the use of a public-key and a private key.
Detailed explanation-3: -Asymmetric encryption involves two keys, private and public. Something encrypted with one can only be decrypted with the other. There is no shared key. A message encrypted with a key can not be decrypted with the same key.
Detailed explanation-4: -Symmetric-symmetric encryption or secret key encryption is one key crypto. You use one key to encrypt the information and the same key to decrypt the information. The benefits is that it is very fast but since both parties use the same key, there needs to be a secure channel for key exchange.