Replaced system SQLite with SQLCipher to support encrypted database

2025-06-07 18:11:17 +03:00
parent f4198d62a7
commit 177d74700f
534 changed files with 362771 additions and 21 deletions
--- a/Sources/DataLiteC/libtomcrypt/pk/ecc/ecc_import.c
+++ b/Sources/DataLiteC/libtomcrypt/pk/ecc/ecc_import.c
@@ -0,0 +1,106 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+
+#include "tomcrypt_private.h"
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wconversion"
+#pragma clang diagnostic ignored "-Wshorten-64-to-32"
+
+/**
+  @file ecc_import.c
+  ECC Crypto, Tom St Denis
+*/
+
+#if defined(LTC_MECC) && defined(LTC_DER)
+
+/**
+  Import an ECC key from a binary packet
+  @param in      The packet to import
+  @param inlen   The length of the packet
+  @param key     [out] The destination of the import
+  @return CRYPT_OK if successful, upon error all allocated memory will be freed
+*/
+int ecc_import(const unsigned char *in, unsigned long inlen, ecc_key *key)
+{
+   return ecc_import_ex(in, inlen, key, NULL);
+}
+
+/**
+  Import an ECC key from a binary packet, using user supplied domain params rather than one of the NIST ones
+  @param in      The packet to import
+  @param inlen   The length of the packet
+  @param key     [out] The destination of the import
+  @param cu      pointer to user supplied params; must be the same as the params used when exporting
+  @return CRYPT_OK if successful, upon error all allocated memory will be freed
+*/
+int ecc_import_ex(const unsigned char *in, unsigned long inlen, ecc_key *key, const ltc_ecc_curve *cu)
+{
+   unsigned long key_size;
+   unsigned char flags[1];
+   int           err;
+
+   LTC_ARGCHK(in  != NULL);
+   LTC_ARGCHK(key != NULL);
+   LTC_ARGCHK(ltc_mp.name != NULL);
+
+   /* find out what type of key it is */
+   err = der_decode_sequence_multi(in, inlen, LTC_ASN1_BIT_STRING,    1UL, flags,
+                                              LTC_ASN1_SHORT_INTEGER, 1UL, &key_size,
+                                              LTC_ASN1_EOL,           0UL, NULL);
+   if (err != CRYPT_OK && err != CRYPT_INPUT_TOO_LONG) {
+      return err;
+   }
+
+   /* allocate & initialize the key */
+   if (cu == NULL) {
+      if ((err = ecc_set_curve_by_size(key_size, key)) != CRYPT_OK) { goto done; }
+   } else {
+      if ((err = ecc_set_curve(cu, key)) != CRYPT_OK)               { goto done; }
+   }
+
+   if (flags[0] == 1) {
+      /* private key */
+      key->type = PK_PRIVATE;
+      if ((err = der_decode_sequence_multi(in, inlen,
+                                     LTC_ASN1_BIT_STRING,      1UL, flags,
+                                     LTC_ASN1_SHORT_INTEGER,   1UL, &key_size,
+                                     LTC_ASN1_INTEGER,         1UL, key->pubkey.x,
+                                     LTC_ASN1_INTEGER,         1UL, key->pubkey.y,
+                                     LTC_ASN1_INTEGER,         1UL, key->k,
+                                     LTC_ASN1_EOL,             0UL, NULL)) != CRYPT_OK) {
+         goto done;
+      }
+   } else if (flags[0] == 0) {
+      /* public key */
+      key->type = PK_PUBLIC;
+      if ((err = der_decode_sequence_multi(in, inlen,
+                                     LTC_ASN1_BIT_STRING,      1UL, flags,
+                                     LTC_ASN1_SHORT_INTEGER,   1UL, &key_size,
+                                     LTC_ASN1_INTEGER,         1UL, key->pubkey.x,
+                                     LTC_ASN1_INTEGER,         1UL, key->pubkey.y,
+                                     LTC_ASN1_EOL,             0UL, NULL)) != CRYPT_OK) {
+         goto done;
+      }
+   }
+   else {
+      err = CRYPT_INVALID_PACKET;
+      goto done;
+   }
+
+   /* set z */
+   if ((err = ltc_mp_set(key->pubkey.z, 1)) != CRYPT_OK) { goto done; }
+
+   /* point on the curve + other checks */
+   if ((err = ltc_ecc_verify_key(key)) != CRYPT_OK)  { goto done; }
+
+   /* we're good */
+   return CRYPT_OK;
+
+done:
+   ecc_free(key);
+   return err;
+}
+#endif
+
+#pragma clang diagnostic pop