Add basic scrypt password hashing helper

app/helpers/password-hash.js

@@ -0,0 +1,30 @@
+'use strict';
+
+const scrypt = require('scrypt');
+
+module.exports =  {
+	/**
+	 * Hash a password with scrypt
+	 *
+	 * @param  {string} str - the password to hash
+	 * @return {Promise} - a promise returning the hash
+	 */
+	hash(str) {
+		return scrypt.kdf(str, {
+			N:16, // Number of rounds
+			r:8, // Block-size of hash
+			p:1, // Parallization
+		});
+	},
+
+	/**
+	 * Verify a password hash matches
+	 *
+	 * @param {string} hash - the hash to check against
+	 * @param {string} str - the password to check against the computed hash
+	 * @return {Promise} - a promise returning a boolean
+	 */
+	verify(hash, str) {
+		return scrypt.verifyKdf(hash, str);
+	},
+};

gulpfile.js

@@ -107,6 +107,7 @@ gulp.task('lint-tests', () => {
 	const LINT_TESTS_FILES = TEST_FILES.concat([
 		'gulpfile.js',
 		'server.js',
+		'migrations/*.js',
 	]);
 
 	// eslint

test/unit/helpers/passwordhash_test.js

@@ -0,0 +1,23 @@
+'use strict';
+
+const testBase = require('../../test-base');
+const expect = testBase.expect;
+const hasher = testBase.require('app/helpers/password-hash');
+
+let raw = 'password';
+let hash = '';
+
+hasher.hash(raw).then((newHash) => {
+	suite('Scrypt password hashing tests', () => {
+		hash = newHash;
+		test('Created a hash', () => {
+			expect(hash).to.be.ok;
+		});
+		test('Hash matches password', (done) => {
+			hasher.verify(hash, raw).then((matches) => {
+				expect(matches).to.be.true;
+				done();
+			}).catch(done);
+		});
+	});
+});