This implements the sha512crypt algorithm as described in http://www.akkadia.org/drepper/SHA-crypt.txt in pure javascript.
Its available in npm via:
$ npm install sha512crypt-node
A example how to use it in a html page is provided in doc/demo.html:
var hash = sha512crypt(document.forms["pwform"]["password"].value,
document.forms["pwform"]["salt"].value);
Basic commandline usage:
$ ./demo.js pass salt
$6$salt$3aEJgflnzWuw1O3tr0IYSmhUY0cZ7iBQeBP392T7RXjLP3TKKu3ddIapQaCpbD4p9ioeGaVIjOHaym7HvCuUm0
$ python -c 'import crypt; crypt.crypt("pass", "$6$salt")
$6$salt$3aEJgflnzWuw1O3tr0IYSmhUY0cZ7iBQeBP392T7RXjLP3TKKu3ddIapQaCpbD4p9ioeGaVIjOHaym7HvCuUm0
Using the "rounds" parameter as part of the salt:
$ ./demo.js pass '$6$rounds=1000$salt'
$6$rounds=1000$salt$NqhXojlgP5NLvJojBnjQD87i66jhb8s3bZord3hSZoIgbCJqUfJdp7pclsLBBqgn02fAtd/vn4lieLeX5J.h90
$ python -c 'import crypt; print crypt.crypt("pass", "$6$rounds=1000$salt")'
$6$rounds=1000$salt$NqhXojlgP5NLvJojBnjQD87i66jhb8s3bZord3hSZoIgbCJqUfJdp7pclsLBBqgn02fAtd/vn4lieLeX5J.h90
Tests are done via mocha, see REQUIREMENTS for details.
$ npm install mocha nodeunit
...
$ cd tests
$ make
nodejs ../node_modules/.bin/mocha -u tdd test_sha512crypt.js
․․․․․․․
7 passing (2 seconds)
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