Remove potential timing leak in ecdsa_sign()
diff --git a/ChangeLog b/ChangeLog
index 417b37f..a6bcdf1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,10 @@
 
 = PolarSSL 1.3 branch
 
+Security
+   * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
+     (Found by Watson Ladd.)
+
 Bugfix
    * The length of various ClientKeyExchange messages was not properly checked.
    * Some example server programs were not sending the close_notify alert.