What is an SSL/TLS Certificate?
Web security is essential for any modern website. With cyber threats on the rise, site owners must protect sensitive data from leaks and unauthorized access.
Installing an SSL certificate is the modern standard for web safety. While it might sound technical, understanding the basics is simple.
What is SSL?
SSL (Secure Sockets Layer) is a cryptographic protocol that creates an encrypted, secure connection between a user's browser and your website's server.
HTTP vs. HTTPS
When an SSL certificate is active, your site uses HTTPS instead of standard HTTP. HTTPS encrypts user data like passwords or credit card info, making it unreadable to third parties, hackers, or public Wi-Fi providers during transmission.
How SSL Encryption Works
SSL uses an asymmetric encryption system with two distinct keys:
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Public Key (The SSL Certificate): Used by the browser to encrypt data before sending it to the server.
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Private Key: Kept strictly on the server to decrypt and read the incoming data.
An SSL certificate acts as a unique digital identity card for your website to verify this connection.
What’s Included in an SSL Certificate?
An SSL certificate contains key identity and security details, including:
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The domain name and company details (name, city, country)
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Certificate validity dates and serial number
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Issuer details (Certificate Authority)
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Supported additional domains (SANs)
Trusted Certificate Authorities (CAs)
Certificates are issued by Certificate Authorities (CAs) trusted global organizations whose public keys are recognized by modern web browsers. A CA-issued certificate proves that your website is legitimate and that you are authorized to secure traffic using that domain.