2048-Bit SSL Certificates with Strong Encryption & Authentication

DigiCert vs the Competition
Learn more about DigiCert's SSL plus certificates
DigiCert Customer Reviews: ★★★★★ 4.9 (3242)

What are SSL Certificates? SSL Certificates, sometimes called digital certificates, are used to establish a secure encrypted connection between a browser (user's computer) and a server (website). The SSL connection protects sensitive data, such as credit card information, exchanged during each visit (session). Whether you need to secure one or many domains, one or multiple servers, DigiCert offers a full line of SSL Certificate products to meet your needs.

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"Wildcard Plus" Certificate

DigiCert's Wildcard Plus SSL Certificate secures an entire domain -- a certificate for *.example.com will secure www.example.com, mail.example.com, and any other subdomain of example.com you can think of. We even use SANs to let your Wildcard SSL Certificate secure the base domain: example.com. And every DigiCert Wildcard SSL Certificate comes with an Unlimited Server License, so you only pay once, whether you have one server or one hundred. Learn more about DigiCert's Wildcard SSL Certificates.

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"SSL Plus" Certificate

Single-name SSL Certificates from DigiCert have all the features you would expect (2048-bit strong encryption, browser trust) and a few things you might not get from other companies' basic certificates (30-day satisfaction guarantee, great customer support, unlimited free reissues, professional site seal). One thing that DigiCert was the first company to do -- and as far as we know, we're still the only one who does it -- is using Subject Alternative Names (SANs) to make your single SSL Certificate for example.com also secure www.example.com (and vice versa). That's why we call it SSL Plus. Learn more about DigiCert's Single-Name Certificates.

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"Multi-Domain (SAN)" Certificate

Multi-Domain (SAN) Certificates (sometimes known as SAN Certificates) use Subject Alternative Names to let you secure up to 250 server names with one certificate. These SSL Certificates are perfect for environments or platforms where you need to secure multiple sites across different domains (e.g., Microsoft Exchange or OCS). Plus every DigiCert Multi-Domain (SAN) Certificate comes with an Unlimited Server License. Learn more about DigiCert's Multi-Domain (SAN) Certificates for total network security.

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"Extended Validation (EV) Plus" Certificate

The highest level of authentication makes Extended Validation SSL Certificates the ultimate in building trust through your website. DigiCert's EV Plus Certificates use Subject Alternative Names to secure both www.example.com and example.com in one SSL Certificate. That means your customers get the green bar in EV-enabled browsers with or without the "www". Learn more about DigiCert's EV Certificates.

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"Extended Validation (EV) Multi-Domain" Certificate

Extended Validation Multi-Domain Certificates provide the flexibility of Multi-Domain (SAN) Certificates with Extended Validation security. This is an unbeatable value that provides branded green-bar assurance across all of your websites with a single certificate. An unlimited server license comes standard. Learn more about DigiCert's EV Multi-Domain Certificates for comprehensive EV security.

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If you are looking for information about digitally signing code, as opposed to server authentication, see our Code Signing Certificate page.

Para esta información en español visite la página Certificados SSL.

Standard Features

All DigiCert SSL Certificates come with the following standard features:

  • Unlimited Free Reissues
  • 2048-bit SSL Secure Sockets Layer with TLS Encryption
  • Compatible with all major browsers
  • Solid vetting to ensure strong Authentication
  • Secure Site Seal
  • Phone, Email, and Chat Support
  • Compatible with Apache, IIS, Tomcat, Windows, Exchange, and other servers
  • Compatible with Linux, Windows, and other operating systems