Hi, **For package create-hash, current npm version 1.1.2 doesn't support md5 calculation based on stream.** We need buffer all the data in memory and then calculate the md5. It's not possible for calculating md5 of huge files. @fanatid had created the md5.js module based on stream. There is also a branch named **feature/update-hashes**. **_It's possible to update the npm version based on this branch?_** I'm also willing to help during the update. Best, Xiaoning