Reading a password from std::cin

I need to read a password from standard input and wanted std::cin not to echo the characters typed by the user...

How can I disable the echo from std::cin?

here is the code that I'm currently using:

string passwd;
cout << "Enter the password: ";
getline( cin, passwd );

I'm looking for a OS agnostic way to do this. Here there are ways to do this in both Windows and *nix.