Replaced system SQLite with SQLCipher to support encrypted database

Sources/DataLiteC/libtomcrypt/pk/dh/dh_set_pg_dhparam.c

@@ -0,0 +1,44 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+
+#include "tomcrypt_private.h"
+
+#ifdef LTC_MDH
+
+/**
+  Import DH key parts p and g from dhparam
+
+      dhparam data: openssl dhparam -outform DER -out dhparam.der 2048
+
+  @param dhparam    The DH param DER encoded data
+  @param dhparamlen The length of dhparam data
+  @param key        [out] Where the newly created DH key will be stored
+  @return CRYPT_OK if successful, note: on error all allocated memory will be freed automatically.
+*/
+int dh_set_pg_dhparam(const unsigned char *dhparam, unsigned long dhparamlen, dh_key *key)
+{
+   int err;
+
+   LTC_ARGCHK(key         != NULL);
+   LTC_ARGCHK(ltc_mp.name != NULL);
+   LTC_ARGCHK(dhparam     != NULL);
+   LTC_ARGCHK(dhparamlen  > 0);
+
+   if ((err = dh_init(key)) != CRYPT_OK) {
+      return err;
+   }
+   if ((err = der_decode_sequence_multi(dhparam, dhparamlen,
+                                        LTC_ASN1_INTEGER, 1UL, key->prime,
+                                        LTC_ASN1_INTEGER, 1UL, key->base,
+                                        LTC_ASN1_EOL,     0UL, NULL)) != CRYPT_OK) {
+      goto LBL_ERR;
+   }
+
+   return CRYPT_OK;
+
+LBL_ERR:
+   dh_free(key);
+   return err;
+}
+
+#endif /* LTC_MDH */