Are your SSL certificates SHA-256 and what is their compatibility?
Category: SSL Certificates
Certificates issued with the SHA-256 hashing algorithm have support on most modern operating systems. Some older systems only support hashing algorithm and as such, SSL certificates will show as invalid for these users.
As a general rule, SHA-256 is supported on OS X 10.5+ and Windows XP SP3+. For a detailed guide, please see below.
Operating System Support
| Apple OS X | 10.5+ |
| iOS | 3.0+ |
| Android | All Versions |
| ChromeOS | All Versions |
| Windows | XP SP3+ |
| Windows Phone | 7+ |
| Blackberry | 5.0+ |
Browser Support
| Chrome | 26+ |
| Firefox | 1.5+ |
| Internet Explorer | 6+ |
| Opera | 9.0+ |
| Safari | 3+ |