Get the expiration date of the certificate's key in seconds since the UNIX epoch, represented as a 64-bit signed integer. A value of 0 means the certificate never expires.
the expiration date of the certificate's key or %-1 if unknown.
Get the expiration date of the certificate's key in seconds since the UNIX epoch, represented as a 64-bit signed integer. A value of 0 means the certificate never expires.