Important notice: Starting from September 1st, most CA institutions will only issue SSL certificates valid for one year.

From September 1, 2020, most CA institutions will only issue SSL certificates with a validity period of one year. That means they will no longer issue certificates with a validity period of more than 398 days, and the maximum validity period of the certificate will be shortened to 13 months.

Cause of incident

In September 2019, Apple proposed shortening the maximum validity period of SSL certificates to one year, but it did not pass the vote of the CA/B forum.

In February 2020, Apple announced at the CA/B Forum meeting that it would no longer trust SSL certificates issued after September 1, 2020, with a validity period of more than 398 days. Subsequently, browser manufacturers such as Google and Firefox also stated that they followed this principle.

Therefore, most CA organizations have also announced that starting from September 1, 2020, they will no longer issue certificates with a validity period of more than 398 days, and the maximum validity period of the certificate will be shortened to 13 months.

Purpose

The fundamental purpose of shortening the validity period of SSL certificates is to ensure that users use the latest encryption standards and the most secure and trustworthy SSL certificates, reduce network security threats to websites, and protect the information security of users' websites and systems to the greatest extent.

Impact

1. Starting from September 1, 2020, users can only apply for SSL certificates with a validity period of 397 days. Similarly, renewals can only be renewed annually.

2. Certificates with a validity period of two years applied before September 1, 2020 will continue to be trusted and their use will not be affected, but they will be restricted when re-signing, that is, only certificates with a validity period of 397 days can be issued after re-signing. SSL certificate.

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