port over some more

lib/odinsea/net/cipher/login_crypto.ex

@@ -222,6 +222,21 @@ defmodule Odinsea.Net.Cipher.LoginCrypto do
     end
   end
 
+  @doc """
+  Hashes a second password (PIC) using SHA-1.
+  Used for second password storage.
+
+  ## Parameters
+    - password: Plain text second password
+
+  ## Returns
+    - Hex-encoded SHA-1 hash (lowercase)
+  """
+  @spec hash_second_password(String.t()) :: String.t()
+  def hash_second_password(password) when is_binary(password) do
+    hex_sha1(password)
+  end
+
   # Private helper: hash a string with a given digest algorithm
   @spec hash_with_digest(String.t(), atom()) :: String.t()
   defp hash_with_digest(input, digest) do