What is a digital certificate and how does it relate to SSL?

Vaibhav Kothia May 26, 2023 0 Comments

A digital certificate is an electronic document used to prove the ownership of a public key. It contains information about the identity of the certificate holder, the certificate’s public key, and the digital signature of the certificate-issuing authority. Digital certificates are used in many applications, including secure websites, email encryption, and code signing.

SSL (Secure Sockets Layer) is a protocol used to secure communications between a web server and a web browser. It uses digital certificates to authenticate the identity of the web server, and to encrypt the data sent between the two. For example, when you visit a website that uses SSL, the web server will present its digital certificate to your web browser. Your web browser will then verify the certificate against a list of trusted certificate authorities, and if it is valid, it will establish an encrypted connection with the web server.

How does SSL work?

Vaibhav Kothia May 26, 2023 0 Comments

SSL stands for Secure Sockets Layer and is a protocol used to secure communications between two computers over the Internet. It uses encryption to ensure that the data sent between the two computers is secure and cannot be intercepted by third parties.

SSL works by using a combination of public-key cryptography and symmetric-key cryptography. Public-key cryptography requires two keys, a public key and a private key, to encrypt and decrypt data. The public key is shared with the other computer and is used to encrypt the data that is sent. The private key is kept secret and is used to decrypt the data that is received.

Symmetric-key cryptography requires one key to both encrypt and decrypt the data. This key is known only to the two computers that are communicating and is used to both encrypt and decrypt the data that is sent between them.

To illustrate how SSL works, let’s take an example of a secure web page. When a user visits the page, their browser sends a request to the server hosting the page. The server then sends back an SSL Certificate, which contains the public key. The browser then uses the public key to encrypt the data it sends to the server. The server then uses its private key to decrypt the data. The data is then sent back to the browser, encrypted with the public key. The browser then uses the private key to decrypt the data and display the page.

What is SSL?

Vaibhav Kothia May 26, 2023 0 Comments

SSL (Secure Sockets Layer) is a protocol used to secure communication between two computers over the internet. It provides encryption for data sent between the two computers, making it difficult for an attacker to intercept and read the data. For example, SSL is used to secure online banking transactions, credit card payments, and other sensitive information sent over the internet.