Why is the message encrypted with the shared symmetric key instead than Bob's public key for practical encryption that requires confidential message transfer from Alice to Bob? Why is Bob's public key used to encrypt the shared symmetric key?
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Why is the message encrypted with the shared symmetric key instead than Bob's public key for practical encryption that requires confidential message transfer from Alice to Bob? Why is Bob's public key used to encrypt the shared symmetric key?
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- For practical encryption that involves secret message transmission from Alice to Bob, why is the message encrypted with the shared symmetric key rather than Bob's public key? What is the significance of using Bob's public key to encrypt the shared symmetric key?Why is it that a private communication between Alice and Bob is encrypted using the shared symmetric key instead of Bob's public key?Why is it necessary to encrypt the shared symmetric key using Bob's public key?If Alice and Bob want to send each other a secret message, why do they use their shared symmetric key instead of Bob's public key?When encrypting the joint symmetric key, why should we utilize Bob's public key?
- If Alice and Bob want to send each other a secret message, why do they use their shared symmetric key instead of Bob's public key?It seems unnecessary to encrypt the joint symmetric key using Bob's public key.Why does practical encryption, which requires a secure message transmission from Alice to Bob, use the shared symmetric key rather than Bob's public key? Why is the shared symmetric key encrypted using Bob's public key?For practical encryption that require confidential message transmission from Alice to Bob, why is the message encrypted with the shared symmetric key instead of the Bob’s public key? Why is the shared symmetric key instead encrypted with the Bob’s public key?
- Explain how you would encrypt a document that you want to send to your friend Bob using public-key cryptography. Explain the process since the moment that you generate you key-pair. So, probably, the first step will be distributing one of your keys to the recipient. Also, explain the last step of this process when Bob decrypts your message.Why is a secret communication from Alice to Bob encrypted using the shared symmetric key rather than Bob's public key?Why use Bob's public key to encrypt the shared symmetric key?In what way does the public-key encrypted message hash provide a better digital signature than the public-key encrypted message?
- 2. Alice used a transposition cipher to encrypt her messages to Bob. For added security, she encrypted the transposition cipher key using a substitution cipher, and kept the encrypted cipher in her computer. Trudy managed to get hold of the encrypted transposition cipher key. Can Trudy decipher Alice's messages to Bob? Why or why not? why/why not? Solution:Using public key cryptography, Bob wants to send a secret message M to Alice (only Alice and Bob should see M), and Alice wants to make sure that M is sent by Bob. Then Bob should: sign the message, and send signature to Alice encrypt M with his public key, encrypt the result with Alice's private key, and then send to Alice Answer is not given encrypt M with his private key, encrypt the result with Alice's public key, and then send to Alice encrypt M with Alice's public key and then send to Alice encrypt M with his public key, encrypt the result with Alice's public key, and then send to Alice encrypt M with his private key, encrypt the result with Alice's private key, and then send to Alice encrypt M with Alice's private key, encrypt the result with his private key, and then send to AliceFor the given scenario where Alice is trying to send encrypted data to Bob, and Bob is trying to decrypt it, using Elgamal encryption scheme, fill the values in the table