[openssl-users] Are double-quotes valid characters in certifcates/keys?

Jeffrey Walton noloader at gmail.com
Mon Apr 11 04:44:33 UTC 2016

> Could not find a definitive answer on google, so thought it would be
> best to ask the experts :)

Its probably been discussed on the PKIX mailing list at some point

Keys don't use them. Certificates can use them based on the ASN.1 type.

However, I work on a C++ project, and the CA removed the CN we
requested. I'm guessing it was because of the "++" in the common name
(friendly name displayed to the user), which may have wreaked havoc on
some scripts. I've been waiting to see a BlackHat talk on it.


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