x509-certificate-version

Arguments: stream

This function returns the value of the version slot of a x509-certificate object. (It can also be used to set the value but setting it has no effect at the moment.) This slot typically contains a keyword indicating the version number of the certificate. The value will be either :v1, :v2, or :v3. If the version number of the certificate is not recognized, this slot will contain the raw integer supplied in the certificate.

The version number indicates the format of the certificate. Most certificates seen these days will be version 3 certificates (:v3).

See socket.htm.

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Created 2015.5.21.