tls-certtool-program is a variable defined in `tls.el'.
Its value is
"certtool"
This variable may be risky if used as a file-local variable.
Documentation:
Name of GnuTLS certtool.
Used by `tls-certificate-information'.
You can customize this variable.
This variable was introduced, or its default value was changed, in
version 22.1 of Emacs.