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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Agnes’s Public Key
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Agnes’s Private Key
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Barry’s Public Key
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Barry’s Private Key
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Detailed explanation-1: -Alice has both a public key and a private key, so she keeps her private key in a safe place and sends her public key to Bob. Bob encrypts the secret message to Alice using Alice’s public key. Alice can later decrypt the message with her private key.
Detailed explanation-2: -Public key encryption One key is nominated as the private key and is kept secret. The other key is distributed to anyone who wants it; this key is the public key. Anyone can encrypt a message by using your public key, but only you can read it. When you receive the message, you decrypt it by using your private key.
Detailed explanation-3: -Public and private keys form the basis for public key cryptography, also known as asymmetric cryptography. In public key cryptography, every public key matches to only one private key. Together, they are used to encrypt and decrypt messages.
Detailed explanation-4: -This is how private messages can be sent without exchanging a shared secret key. Text encrypted with the private key can only be decrypted using the public key. This is how a digital signature is created. A ciphertext encrypted with a private key is decrypted using the public key to authenticate the signature.