/usr/lib/x86_64-linux-gnu/libgcrypt.so is in libgcrypt20-dev 1.6.1-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /lib/x86_64-linux-gnu/libgcrypt.so.20.0.1
/lib/x86_64-linux-gnu/libgcrypt.so.20.0.1