A form of Digital Certificate for use in HTTPS found on the website’s origin server. TLS certificates contain:
- Website’s public key
- Certificate’s issued domain name
- Associated subdomains
- Expiration of certificate
- Digital Signature
- Which Certificate Authority issued it
Invalid Certificate
- Check your time synchronization
- Check your certificate lists
- Check if another device and browser can access the site
Creating A Digital Certificate
- Create public, private key pair with OpenSSH Keygen