crypto: Implement BigNum/ExpMod

libraries/libvapours/source/crypto/crypto_memory_clear.cpp

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <vapours.hpp>
+
+namespace ams::crypto {
+
+    void ClearMemory(void *_mem, size_t size) {
+        volatile u8 *mem = reinterpret_cast<volatile u8 *>(_mem);
+
+        for (size_t i = 0; i < size; i++) {
+            mem[i] = 0;
+        }
+    }
+
+}