feat!: implemented multigame support (#34)

Reviewed-on: #34
Co-authored-by: Janis <janis.e.20@gmx.de>
Co-committed-by: Janis <janis.e.20@gmx.de>

knockoutwhistweb/app/util/UserHash.scala

@@ -0,0 +1,23 @@
+package util
+
+import de.mkammerer.argon2.Argon2Factory
+import de.mkammerer.argon2.Argon2Factory.Argon2Types
+import model.users.User
+
+object UserHash {
+  private val ITERATIONS: Int = 3
+  private val MEMORY: Int = 32_768
+  private val PARALLELISM: Int = 1
+  private val SALT_LENGTH: Int = 32
+  private val HASH_LENGTH: Int = 64
+  private val ARGON_2 = Argon2Factory.create(Argon2Types.ARGON2id, SALT_LENGTH, HASH_LENGTH)
+
+  def hashPW(password: String): String = {
+    ARGON_2.hash(ITERATIONS, MEMORY, PARALLELISM, password.toCharArray)
+  }
+
+  def verifyUser(password: String, user: User): Boolean = {
+    ARGON_2.verify(user.passwordHash, password.toCharArray)
+  }
+
+}