Replaced system SQLite with SQLCipher to support encrypted database

Sources/DataLiteC/libtomcrypt/pk/ecc/ltc_ecc_points.c

@@ -0,0 +1,61 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+
+#include "tomcrypt_private.h"
+
+/**
+  @file ltc_ecc_points.c
+  ECC Crypto, Tom St Denis
+*/
+
+#ifdef LTC_MECC
+
+/**
+   Allocate a new ECC point
+   @return A newly allocated point or NULL on error
+*/
+ecc_point *ltc_ecc_new_point(void)
+{
+   ecc_point *p;
+   p = XCALLOC(1, sizeof(*p));
+   if (p == NULL) {
+      return NULL;
+   }
+   if (ltc_mp_init_multi(&p->x, &p->y, &p->z, LTC_NULL) != CRYPT_OK) {
+      XFREE(p);
+      return NULL;
+   }
+   return p;
+}
+
+/** Free an ECC point from memory
+  @param p   The point to free
+*/
+void ltc_ecc_del_point(ecc_point *p)
+{
+   /* prevents free'ing null arguments */
+   if (p != NULL) {
+      ltc_mp_deinit_multi(p->x, p->y, p->z, LTC_NULL); /* note: p->z may be NULL but that's ok with this function anyways */
+      XFREE(p);
+   }
+}
+
+int ltc_ecc_set_point_xyz(ltc_mp_digit x, ltc_mp_digit y, ltc_mp_digit z, ecc_point *p)
+{
+   int err;
+   if ((err = ltc_mp.set_int(p->x, x)) != CRYPT_OK) return err;
+   if ((err = ltc_mp.set_int(p->y, y)) != CRYPT_OK) return err;
+   if ((err = ltc_mp.set_int(p->z, z)) != CRYPT_OK) return err;
+   return CRYPT_OK;
+}
+
+int ltc_ecc_copy_point(const ecc_point *src, ecc_point *dst)
+{
+   int err;
+   if ((err = ltc_mp.copy(src->x, dst->x)) != CRYPT_OK) return err;
+   if ((err = ltc_mp.copy(src->y, dst->y)) != CRYPT_OK) return err;
+   if ((err = ltc_mp.copy(src->z, dst->z)) != CRYPT_OK) return err;
+   return CRYPT_OK;
+}
+
+#endif