Certificate Services – Migrate Hash Algorithm from SHA1 to SHA2 (SHA256)

The steps below will illustrate how one can reconfigure their PKI so that the CA certificates are signed with the SHA2 hashing algorithm and certificates issued by the PKI are signed using the SHA2 hashing algorithm. This walkthrough is an example of how this can be accomplished

 
 
 
 
 
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Active Directory
10/17/2018
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Verified on the following platforms
Windows 10 Yes
Windows Server 2012 Yes
Windows Server 2012 R2 Yes
Windows Server 2008 R2 Yes
Windows Server 2008 Yes
Windows Server 2003 No
Windows Server 2016 Yes
Windows 8 No
Windows 7 Yes
Windows Vista No
Windows XP No
Windows 2000 No
This script is tested on these platforms by the author. It is likely to work on other platforms as well. If you try it and find that it works on another platform, please add a note to the script discussion to let others know.