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Pt1420 Unit 9 Final Paper

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4. Value of the challenge is 66df 784c 048c d04 35dc 4489 8946 9909. 5. Yes. Public key crypto: RSA; symmetric-key algorithm: RC4; hash algorithm: MD5. 6. Yes. Public key crypto: RSA; symmetric-key algorithm: RC4; hash algorithm: MD5. 7. Yes, this record includes a nonce, which is 32 bits long. The purpose of the nonce is to prevent replay attacks. 8. Yes, this record includes a session ID. The purpose of the session ID is to provide the SSL session a unique identifier. 9. No, this record does not contain a certificate, and the certificate is included in a separate record. The certificate does fit into a single Ethernet frame. 10. Yes, this record contains a pre-master secret. It is used for producing master secret for the server and the client. The master secret can generate a set of session keys for media access control and encryption. The secret is encrypted by server’s public key. The encrypted secret is 128 …show more content…

The purpose of the Change Cipher Spec record is to show that the subsequent SSL records sent by the client will be encrypted. The record is 6 bytes long. 12. In the encrypted handshake record, the session will generate a MAC of the concatenation that includes all the previous handshake messages sent from the client, and then send this concatenation to the server. 13. Yes, the server also sends a Change Cipher Spec record and encrypted handshake to the client. This handshake record is different from those sent by the client in that it contains the concatenation of all the handshake messages from the server, instead of from the client. 14. The application data is encrypted by symmetric key encryption algorithm. The pre-master key and nonces from the client and the server generate the symmetric encryption keys to choose the algorithm in the handshake phase. 15. The original ClientHello message is a version 2 SSL, but if the server replies the message with a version 3 SSL frame, the subsequent SSL message exchange will all turn into version 3

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