What is SSL/TLS and how does it works?
In this blog post, we’ll explore SSL/TLS encryption and its vital role in securing Internet communication. Discover the validation process for establishing trusted connections and learn about the authentication mechanisms behind SSL/TLS. Let’s dive in together!
What is SSL and TLS?
SSL is technology your applications or browsers may have used to create a secure, encrypted communication channel over any network. However, SSL is an older technology that contains some security flaws. Transport Layer Security (TLS) is the upgraded version of SSL that fixes existing SSL vulnerabilities. TLS authenticates more efficiently and continues to support Both operates at the transport layer 4.
What is the difference between SSL certificates and TLS certificates?
At present, all SSL certificates are no longer in use. TLS certificates are the industry standard. However, the industry continues to use the term SSL to refer to TLS certificates.
TLS certificates have iterated upon SSL certificates and improved them over time. The final function of SSL certificates and TLS certificates hasn’t changed.
However, it’s important to note that TLS 1.0 and TLS 1.1 were also formally deprecated in 2021.
What is a TLS certificate?
A TLS certificate is a file installed on a website’s origin server. It’s simply a data file containing the public key and the identity of the website owner, a signature from a Trusted CA along with other information. Without a TLS certificate, a website’s traffic can’t be encrypted with TLS.
Technically, any website owner can create their own TLS certificate, and such certificates are called self-signed certificates. However, browsers do not consider self-signed certificates to be as trustworthy as TLS certificates issued by a certificate authority.
What is Certificate Authority?
A Certificate Authority (CA) is a trusted entity that issues digital certificates used in public key infrastructure (PKI). It plays a crucial role in establishing the trustworthiness of online communication and verifying the authenticity of digital entities, such as websites, servers, or individuals.
The primary function of a Certificate Authority is to validate and issue digital certificates. These certificates contain information about the entity they identify, including its public key and other identifying details. When a client (such as a web browser) connects to a secure website, the website presents its digital certificate, which is verified by the client’s trust in the issuing CA.
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