python3-service-identity 18.1.0-6 (amd64 binary) in ubuntu kinetic

 Service_identity aspires to give you all the tools you need for verifying
 whether a certificate is valid for the intended purposes.
 .
 In the simplest case, this means host name verification. However,
 service_identity implements RFC 6125 fully and plans to add other
 relevant RFCs too.
 .
 This package contains service_identity for Python 3.