How does certificate authority impact a security system?
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A. B. C. D.B.
A Certificate Authority (CA) is an entity that issues digital certificates used to verify the identity of a user or device, and ensure the authenticity and integrity of data transmitted over a network. The CA acts as a trusted third party that vouches for the identity of the user or device and provides a certificate that contains information about the identity of the user or device, as well as a public key that can be used to encrypt and decrypt data.
In the context of SSL/TLS (Secure Sockets Layer/Transport Layer Security) encryption, which is used to secure communication between a client (such as a web browser) and a server, a CA plays a critical role. When a client initiates a connection with a server that uses SSL/TLS encryption, the server sends its SSL/TLS certificate to the client. The client then checks the certificate to ensure that it was issued by a trusted CA, and that the domain name on the certificate matches the domain name of the server.
The CA impacts the security system in the following ways:
A. It authenticates client identity when requesting SSL certificate: The CA verifies the identity of the client requesting the SSL certificate, ensuring that the certificate is issued only to the legitimate owner of the domain name.
B. It validates domain identity of a SSL certificate: The CA verifies the identity of the domain name listed on the SSL certificate, ensuring that it matches the domain name of the server that the client is communicating with.
C. It authenticates domain identity when requesting SSL certificate: The CA verifies the identity of the domain name requested by the client, ensuring that the client is communicating with a legitimate server and not an imposter.
D. It validates client identity when communicating with the server: The CA ensures that the client's identity is verified and authenticated when communicating with the server, providing an additional layer of security and trust.
In summary, a Certificate Authority is a crucial component of a security system, as it helps to establish trust between users and devices, and ensure the authenticity and integrity of data transmitted over a network.