/usr/share/man/man3/tpmUnsealStrerror.3.gz is in libtpm-unseal-dev 1.3.8-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man3/tpmUnsealFile.3.gz
/usr/share/man/man3/tpmUnsealFile.3.gz