From f3accb655d349bb6d78fdc3c66a5d2d0cd15731d Mon Sep 17 00:00:00 2001
From: J08nY
Date: Thu, 14 Mar 2019 13:38:22 +0100
Subject: Add better chunking support and detect it at runtime.

---
 src/cz/crcs/ectester/applet/AppletBase.java | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

(limited to 'src/cz/crcs/ectester/applet/AppletBase.java')

diff --git a/src/cz/crcs/ectester/applet/AppletBase.java b/src/cz/crcs/ectester/applet/AppletBase.java
index 94f790b..31ddbd9 100644
--- a/src/cz/crcs/ectester/applet/AppletBase.java
+++ b/src/cz/crcs/ectester/applet/AppletBase.java
@@ -97,10 +97,13 @@ public abstract class AppletBase extends Applet {
             // go to proprietary data
             dataOffset++;
             */
+            short resetMemory = JCSystem.getAvailableMemory(JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
+            short deselectMemory = JCSystem.getAvailableMemory(JCSystem.MEMORY_TYPE_TRANSIENT_DESELECT);
+            byte memoryType = (resetMemory > deselectMemory) ? JCSystem.CLEAR_ON_RESET : JCSystem.CLEAR_ON_DESELECT;
 
-            ramArray = JCSystem.makeTransientByteArray(ARRAY_LENGTH, JCSystem.CLEAR_ON_RESET);
-            ramArray2 = JCSystem.makeTransientByteArray(ARRAY_LENGTH, JCSystem.CLEAR_ON_RESET);
-            apduArray = JCSystem.makeTransientByteArray(APDU_MAX_LENGTH, JCSystem.CLEAR_ON_RESET);
+            ramArray = JCSystem.makeTransientByteArray(ARRAY_LENGTH, memoryType);
+            ramArray2 = JCSystem.makeTransientByteArray(ARRAY_LENGTH, memoryType);
+            apduArray = JCSystem.makeTransientByteArray(APDU_MAX_LENGTH, memoryType);
 
             randomData = RandomData.getInstance(RandomData.ALG_SECURE_RANDOM);
             EC_Consts.randomData = randomData;
-- 
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