Replaced system SQLite with SQLCipher to support encrypted database

Sources/DataLiteC/libtomcrypt/modes/xts/xts_mult_x.c

@@ -0,0 +1,29 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+#include "tomcrypt_private.h"
+
+/**
+  Source donated by Elliptic Semiconductor Inc (www.ellipticsemi.com) to the LibTom Projects
+*/
+
+#ifdef LTC_XTS_MODE
+
+/** multiply by x
+  @param I      The value to multiply by x (LFSR shift)
+*/
+void xts_mult_x(unsigned char *I)
+{
+   int x;
+   unsigned char t, tt;
+
+   for (x = t = 0; x < 16; x++) {
+      tt = I[x] >> 7;
+      I[x] = ((I[x] << 1) | t) & 0xFF;
+      t = tt;
+   }
+   if (tt) {
+      I[0] ^= 0x87;
+   }
+}
+
+#endif