What to Do If You’ve Lost Your Private Key
Lost your private key? Learn when and how to reissue your SSL/TLS certificate, generate a new CSR, and keep your encrypted communications secure with SSL.com.
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Archives: FAQs
What is a Fully Qualified Domain Name (FQDN)?
A comprehensive guide to Fully Qualified Domain Names (FQDNs), covering structure, best practices for SSL/TLS certificates, troubleshooting common errors, and key differences from URLs and PQDNs.
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How to Verify an RSA Private Key Matches a CSR and Certificate
A comprehensive guide explaining how to verify that your RSA private key matches your Certificate Signing Request (CSR) and SSL/TLS certificate using OpenSSL commands and modulus comparison techniques.
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Switching to SSL.com from Another SSL Provider or Hosting Service
This guide explains how to change your SSL certificate provider to SSL.com. As a website owner, you have the right to choose any SSL provider
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Certificate Management
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What is a Site Seal?
Discover SSL.com Smart Seal: A free, innovative site seal offering real-time reports and validated documents. Enhance your website’s security and build visitor trust today.
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eSigner FAQ
Frequently asked questions about SSL.com’s eSigner cloud document and code signing service.
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How Do I Revalidate an Expired Domain?
How to revalidate an expired domain name, so you can continue ordering certificates for it from SSL.com.
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FAQ: Extended Validation (EV) Process
Frequently asked questions about the process of validating and issuing Extended Validation (EV) certificates from SSL.com
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What if my EV Code Signing token is blank?
Steps you should take to install your certificate if you received a blank EV Code Signing token.
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Underscores Not Allowed in Domain Names
Following CA/B Forum Ballot SC12, publicly trusted CAs cannot issue SSL/TLS certificates for subdomains containing underscore (_) characters.
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Which ACME Challenge Type Should I Use? HTTP-01 or DNS-01?
Not sure if you should use the HTTP-01 or DNS-01 ACME challenge? This FAQ outlines the advantages and disadvantages of both DV methods.
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What Is the ACME Protocol?
Automated Certificate Management Environment (ACME) is a standard protocol for automated management of X.509 certificates.
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FAQ: Expired Document Signing Certificates
Frequently asked questions about expired document signing certificates.
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FAQ: Expired Code Signing Certificates
Frequently asked questions about expired code signing certificates.
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FAQ: Expired S/MIME Certificates
Frequently asked questions about how expired S/MIME certificates affect signed and encrypted email.
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FAQ: Network Attacks and Security Issues
FAQ on network attacks and securitity issues, especially as they pertain to SSL/TLS, PKI, and digital certificates.
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What is HTTPS?
HTTPS (Hypertext Transfer Protocol Secure) is a secure version of the HTTP protocol that uses the SSL/TLS protocol to encrypt data sent between a web browser and a website.
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FAQ: Digital Certificate Revocation
FAQ covering common methods for communicating information about digital certificate revocation: CRL, OCSP, OCSP Stapling and Must-Staple, and CRLite.
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FAQ: Compromised Private Keys
Think your key might be compromised? This might be an emergency, but it might just be a chance to re-key your certificate. Find out how to move forward here.
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What is a Digital Certificate?
A digital certificate is a type of file used to associate cryptographic key pairs with identities such as websites, individuals, or organizations.
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FAQ: Getting Started With Your Code Signing Certificate
This FAQ answers common questions about getting started signing files with your SSL.com EV Code Signing certificate and YubiKey FIPS token.
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FAQ: Kernel-Mode Code Signing Certificates
This FAQ answers common questions developers may have about getting started with kernel-mode code signing in Windows.
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What is the “unique value” used in domain validation (DV)?
The “unique value” used in domain validation (DV) is a random or user-supplied value used to ensure the uniqueness of the DV request.
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FAQ: Getting Started With Your Business Identity Certificate
This FAQ answers common questions about getting started signing documents and email with SSL.com’s Business Identity Certificate and YubiKey FIPS token.
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