Generating sha1 ids from GUID string,

[ghost]

Hi.
I am using boost to generate uid like this:

boost::uuids::name_generator_sha1 generator(boost::uuids::ns::dns());
boost::uuids::uuid machineIdUUID = generator(info.c_str());

Where info contains a string in format "MTI-PC-15179-54281-4576-46682c" which is made out of:

PC name: "MTI-PC"

And the rest four blocks of numbers are some other unique ids of hardware modules in the PC.
Boost takes the above string in and returns GUID.

How do I do the same thing but with stduuid?
In the examples I found this:

   uuids::uuid_name_generator dgen(uuids::uuid::from_string("47183823-2574-4bfd-b411-99ed177d3e43").value());
   auto id1 = dgen("john");
   REQUIRE(!id1.is_nil());
   REQUIRE(id1.version() == uuids::uuid_version::name_based_sha1);

What string should go into dgen() in this case?Some arbitraryGUI string? If I put into it "MTI-PC-15179-54281-4576-46682c" it crashes at .value() return.
Thanks.