Documentation
SSL deployment guides, code-signing manuals, FAQs and handy tools to help you request, deploy and operate certificates smoothly.
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Server certificate install guide (Nginx)
The full flow: generate a CSR, build the chain, configure Nginx SSL, and back up.
Server certificate install guide (Apache)
From CSR to preparing files, enabling mod_ssl, vhost config and backup.
Server certificate install guide (Tomcat)
From CSR to a PKCS12/JKS keystore, Connector config and backup.
Deploy a wildcard certificate
The full flow: CSR, DNS validation, deployment, distribution and backup.
Code signing certificate install guide
UKey driver install, token initialization, signing and verifying with DigiCert Utility.
About code-signing timestamping
How timestamping works, the problem it solves, and the recommended server.
Certificate basics
PKI principles, applications, problems solved and certificate authorities.
SSL configuration FAQ
21 common questions — redirects, buying, chains, session handshake and more.
Server certificate install guide (HAProxy)
From CSR to a combined PEM, frontend/backend config and backup.
Server SSL install guide (Load Balancer / SLB)
From CSR to creating the certificate in the console, listener rules and backup.
SHA256 compatibility list
SHA-256 compatibility across operating systems, browsers and web servers.
An API for developers
Request, download and revoke certificates in a few lines of code — embed trust into your product.
POST /v1/certificates
Authorization: Bearer <api_key>
{ "domain": "example.com",
"type": "DV" }- RESTful endpoints & SDKs
- Webhook event notifications
- Sandbox test environment
- Full OpenAPI documentation