Module ssl_verify_fun_cert_helpers

extract_cn(Cert::#'OTPCertificate'{}) -> {error, no_common_name} | {ok, string()} | {error, invalid}

extract_dns_names(Cert::#'OTPCertificate'{}) -> [] | [string()]

extract_pk(Cert::#'OTPCertificate'{}) -> {error, no_common_name} | #'SubjectPublicKeyInfo'{}