On Sept. 1, browsers and devices from Apple, Google, and Mozilla will show errors for new TLS certificates with a life span longer than 398 days. The move, while beneficial for security, pushes back against certificate authorities (CAs) and may prove an operational headache for businesses.
The life span of SSL/TLS certificates has dramatically shrunk in the past 10 years. Just over a decade ago, domain registrars sold TLS certificates valid for eight to 10 years. The Certification Authority Browser Forum (CA/Browser Forum), a group of CAs, imposed a five-year limit in 2011. This was cut to three years in 2015 and to two years in 2018.
Historically, these changes were made in collaboration between browser makers and CAs, with the two parties debating rules and changes before voting on and implementing them – until a ballot proposing one-year validity was voted down by CAs at a CA/Browser Forum meeting. Following this, Apple broke standard processes and individually chose to enforce 398-day limits in Safari.
Apple made its decision public in February and confirmed this change will only affect TLS server certificates issued from Root CAs on or after Sept. 1. Certificates issued before then won't be affected; neither will those from user-added or administrator-added Root CAs. Mozilla and Google h ..
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