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InterstateAdminInterstateAdmin 

sha1 to sha2

With Google Chrome sunsetting sha1 on January 1st, we (like others, I assume?) need to move to sha2 from sha1.

When we make the certificate change, we get an error with our single sign on saying that our "company's authentication service is currently down".  If we change back to sha1, the error message goes away.

Any one have any words of wisdom for us?  We don't have premier support with Salesforce, so Support won't help us.

Thanks!
PratikPratik (Salesforce Developers) 
Hi,

This should help:
https://developer.salesforce.com/page/Apex_Crypto_Class

Thanks,
Pratik