I need to check the validity of few certificates and am using -attime flag with my OpenSSL command
openssl cms -verify -inform DER *** -attime epochvalue.
I got a doubt here, about the data type of epochvalue, then had a look at the link
https://www.openssl.org/docs/man1.1.1/man1/openssl-s_server.html
in which it is mentioned as [-attime intmax]. I believe intmax mentioned here same as INT_MAX of limits.h
If attime range is only till INT_MAX, which when converts to epoch will be 2147483647 and is nothing but till Tuesday, January 19, 2038 3:14:07, how will the certificates after this date will be validated?