/etc/tigervnc/ecparams.pem is in tigervnc-standalone-server 1.7.0+dfsg-8ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | -----BEGIN EC PARAMETERS-----
BgUrgQQAIg==
-----END EC PARAMETERS-----
|