Hi all, Still trying to figure out OSSL_STORE_open(), but not having any luck. I tried with a uri of “file:///tmp/foo.pem” and “/tmp/foo.pem”, and in both cases NULL is returned and the error code is OSSL_STORE_R_UNREGISTERED_SCHEME. According to the man page at https://www.openssl.org/docs/man3.2/man3/OSSL_STORE_open.html, "A string without a scheme prefix (that is, a non-URI string) is implicitly interpreted as using the file: scheme”, but this doesn’t appear to happen. There is nothing documented at the page above indicating any prerequisite functions to call. Anyone have any more info as to why OSSL_STORE_open() isn’t doing anything? Regards, Graham —