please need help with these thank you

Partial Question 4 0.67 /2 pts Which of the following can lead to successful breach of encrypted information against websites using HTTPS? Phishing emails Falufy information to obtain digital certificate from a root CA Man-in-the-middle to defeat encryption Steal private key of the website al Incorrect Question 5 0/1 pts Alice and Bob are strangers. Alice wants Bob to send her a private message A and be able to verify the integrity of the message. What should Bob do? (h() is a hash function and assume both Alice and Bob knows h0). Bob generates an encryption key k and relies on PKI to send Alice X, Y, H where Y=PubEbob-pub,k), X-SymEk,A), H-SymE(k, h(A)). This works This does not work because Alice cannot verify Bob's public key This does not work because while Alice can receive message A but cannot verify the integrity of the message This does not work because Alice cannot recover the decryption keyk as she does not know Bob's private key sional Incorrect Question 7 0/1 pts Alice and Bob are strangers. Alice wants Bob to send her a private message A and be able to verify the integrity of the message. What should Bob do? (h() is a hash function and assume both Alice and Bob knows h0). Bob generates an encryption key k and relies on PKI to send Alice X, Y, H where Y=PubE(bob-pri,k), X-SymE(k.A), H-PubE(alice-pub, h(A)). This does not work because Alice cannot have access to the encryption key k it This does not work because Alice cannot verify Bob's public key This works essional This does not work because this message can be read by anyone