SHA-1 Certificates in Chrome

Posted by Andrew Whalley, Chrome Security
We’ve previously made about Google Chrome's deprecation plans for SHA-1 certificates. This post provides an update on the final removal of support.

The SHA-1 cryptographic hash algorithm first points to the imminent possibility of attacks that could directly impact the integrity of the Web PKI. To protect users from such attacks, Chrome will stop trusting certificates that use the SHA-1 algorithm, and visiting a site using such a certificate will result in an interstitial warning.
Release schedule
We are planning to remove support for SHA-1 certificates in Chrome 56, which will be released to the stable channel , moving from Dev to Beta to Stable; there won't be a date-based change in behaviour.

Website operators are urged we provide the that allows certificates which chain to a locally installed trust anchor to be used after support has otherwise been removed from Chrome. Features which