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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Sender use one key
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Receiver use same key
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Both use different key
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None of the above
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Detailed explanation-1: -Asymmetric encryption algorithms use two different keys for encryption and decryption. The key used for encryption is the public key, and the key used for decryption is the private key. Both the keys must belong to the receiver.
Detailed explanation-2: -Types of cryptography Symmetric encryption uses one key: the same key encrypts and decrypts. Asymmetric cryptography uses two keys: if you encrypt with one key, you may decrypt with the other. Hashing is a one-way cryptographic transformation using an algorithm (and no key).
Detailed explanation-3: -Asymmetric keys are the foundation of Public Key Infrastructure (PKI) a cryptographic scheme requiring two different keys, one to lock or encrypt the plaintext, and one to unlock or decrypt the cyphertext. Neither key will do both functions. One key is published (public key) and the other is kept private (private key).