+ #
+ # In Received: headers, convert RFC 8314 style ciphersuite to
+ # the older (comment) style, keeping only the Auth element
+ # (discarding kex, cipher, mac). For TLS 1.3 there is no kex
+ # element (and no _WITH); insert a spurious "RSA".
+
+ s/^\s+by .+ with .+ \K tls TLS_.*?([^_]+)_WITH.+$/(TLS1.x:ke-$1-AES256-SHAnnn:xxx)/;
+ s/^\s+by .+ with .+ \K tls TLS_.+$/(TLS1.x:ke-RSA-AES256-SHAnnn:xxx)/;
+