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Wed, Aug 26, 2015 10:07 pm

Safari - Certificate has an invalid issuer

When I put in the HTTPS URL for a website in Safari, I saw the message below:

Safari can't verify the identity of the website "".

The certificate for this website is invalid. You might be connecting to a website that is pretending to be "", which could put your confidential information at risk. Would you like to connect to the website anyway?

[ Show Certificate ] [ Cancel ] [ Continue ]

When I clicked on Show Certificate, I saw "This certificate has an invalid ussuer.

Since this was a trusted work site, I downloaded a .p7b file containing the issuer certificate. I then opened the Keychain Access app, which is in Applications/Utilities, then clicked on File, then Import Items, then selected the .p7b file I downloaded. I then no longer saw the certificate warning message in Safari. I didn't have to restart Safari to have it recognize the website's certifcate as valid.

A .p7b extension is used for X.509 certificates. X.509 is a public key infrastructure (PKI) standard which specifies standard formats for public key certificates, certificate revocation lists, authorization certifcates, and a certification path validation algorithm.

[/network/web/browser/safari] permanent link

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