/usr/share/gocode/src/github.com/dgrijalva/jwt-go/test/ec384-public.pem is in golang-github-dgrijalva-jwt-go-dev 3.0.0.1+REALLY.2.6.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | -----BEGIN PUBLIC KEY-----
MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAE2Gu6yWlO33izKqwMemnWRTUDqWlB/1Mp
W2S64jizjeWBVcLVVKTtRXxF2VCEKabUT7XOYsSD2OufMoQUm+oq3yCVEj/WmE35
SRipP5g5CuLfJlgc4Yg+Qeo4PXBBoRoA
-----END PUBLIC KEY-----
|