32 Questions
What is SSL?
A communication protocol for securing web browser and server communications
Which organization developed the Secure Sockets Layer Protocol (SSL) in 1994?
Netscape
What is the latest version of the SSL protocol based on?
TLS Version 1.0
What does SSL ensure between a web server and browsers?
Privacy and integrity of data passed between them
What is the main purpose of SSL in a web browser?
To establish an encrypted link between a web server and the browser
What type of encryption algorithm is used for encrypting sensitive data in SSL?
DES and RSA algorithm
In the SSL protocol, what is the purpose of Phase 1?
To agree on encryption algorithms between the client and server
What is the main function of a certificate in the SSL protocol during Phase 2?
To authenticate the server to the client
What happens during the SSL protocol Phase 3?
Client generates a pre-master key and sends it to the server
What is the purpose of generating a master key in SSL key generation process?
To create cipher keys for secure communication
During SSL data transmission, what does the MAC (message integrity) ensure?
Data authenticity
What is the purpose of a certificate containing an RSA public key in SSL protocol Phase 2?
To eliminate separate public key exchange between client and server
What happens if no certificate containing a public key is available in SSL protocol Phase 2?
Server passes Diffie-Hellman key exchange parameters instead
What is the role of compression algorithms in SSL data transmission?
To reduce the size of data blocks before hashing
How are preferred encryption algorithms communicated between client and server in SSL protocol Phase 1?
By passing them in the https request
"What is the significance of CA's public key in SSL certificate validation?"
"To validate the authenticity of the server's certificate"
In symmetric-key cryptography, what is the primary challenge for two parties?
Distributing the shared secret key
What is the role of a Key-Distribution Center (KDC) in symmetric-key cryptography?
Distributing the shared secret key to parties
What type of keys does a KDC create for each member in symmetric-key cryptography?
Session keys for secure communication
What is the primary advantage of symmetric-key cryptography over asymmetric-key cryptography for enciphering large messages?
Efficiency in message encryption
What is the main purpose of a Public-Key Infrastructure (PKI) in symmetric-key cryptography?
Verifying digital certificates
Why is a shared secret key needed in symmetric-key cryptography?
To encrypt and decrypt messages between parties
In Kerberos, what is the purpose of the Trusted Third Party (TTP)?
It knows all passwords and can grant access to any server
What is the main drawback of the naïve solution where every server knows every user’s password in network authentication?
Compromise of one server results in compromising all users
What issue does the Kerberos protocol aim to address?
Eliminating the need for a single point of failure in authentication
What is the role of the Authentication Server (AS) in the Kerberos protocol?
Granting tickets to users for accessing network services
What is the primary advantage of using Kerberos for user authentication on a network?
Eliminating the need for a single point of failure in authentication
What does the term 'Single Logon' authentication refer to in the context of Kerberos?
User only needs to obtain an encrypted ticket once for all network services
What is the drawback of sending passwords in plaintext during authentication?
Risk of compromise if intercepted by unauthorized parties
How does Kerberos ensure that users do not need to send their passwords each time they access network services?
By using a single logon approach with encrypted tickets
What is the primary purpose of the Trusted Third Party (TTP) in Kerberos?
To eliminate the need for a single point of failure in authentication
What is the key advantage of 'Single Logon' authentication in Kerberos?
Users only need to obtain an encrypted ticket once, instead of entering passwords frequently
Learn the history and purpose of SSL (Secure Sockets Layer) and how to check for its presence in web browsers. Understand the importance of SSL in establishing encrypted links between web servers and browsers, ensuring data privacy and integrity.
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