backend ported to node.js (work in progress)

node/my_scrypt.js

@@ -0,0 +1,28 @@
+const sql = require('./sql');
+const scrypt = require('scrypt');
+
+async function getVerificationHash(password) {
+    const salt = await sql.getOption('password_verification_salt');
+
+    return getScryptHash(password, salt);
+}
+
+async function getPasswordDerivedKey(password) {
+    const salt = await sql.getOption('password_derived_key_salt');
+
+    return getScryptHash(password, salt);
+}
+
+async function getScryptHash(password, salt) {
+    const hashed = scrypt.hashSync(password,
+        {N: 16384, r:8, p:1},
+        32,
+        salt);
+
+    return hashed;
+}
+
+module.exports = {
+    getVerificationHash,
+    getPasswordDerivedKey
+};