Replaced system SQLite with SQLCipher to support encrypted database

Sources/DataLiteC/libtomcrypt/mac/pmac/pmac_done.c

@@ -0,0 +1,62 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+#include "tomcrypt_private.h"
+
+/**
+  @file pmac_done.c
+  PMAC implementation, terminate a session, by Tom St Denis
+*/
+
+#ifdef LTC_PMAC
+
+int pmac_done(pmac_state *pmac, unsigned char *out, unsigned long *outlen)
+{
+   int err, x;
+
+   LTC_ARGCHK(pmac != NULL);
+   LTC_ARGCHK(out  != NULL);
+   if ((err = cipher_is_valid(pmac->cipher_idx)) != CRYPT_OK) {
+      return err;
+   }
+
+   if ((pmac->buflen > (int)sizeof(pmac->block)) || (pmac->buflen < 0) ||
+       (pmac->block_len > (int)sizeof(pmac->block)) || (pmac->buflen > pmac->block_len)) {
+      return CRYPT_INVALID_ARG;
+   }
+
+
+   /* handle padding.  If multiple xor in L/x */
+
+   if (pmac->buflen == pmac->block_len) {
+      /* xor Lr against the checksum */
+      for (x = 0; x < pmac->block_len; x++) {
+          pmac->checksum[x] ^= pmac->block[x] ^ pmac->Lr[x];
+      }
+   } else {
+      /* otherwise xor message bytes then the 0x80 byte */
+      for (x = 0; x < pmac->buflen; x++) {
+          pmac->checksum[x] ^= pmac->block[x];
+      }
+      pmac->checksum[x] ^= 0x80;
+   }
+
+   /* encrypt it */
+   if ((err = cipher_descriptor[pmac->cipher_idx].ecb_encrypt(pmac->checksum, pmac->checksum, &pmac->key)) != CRYPT_OK) {
+      return err;
+   }
+   cipher_descriptor[pmac->cipher_idx].done(&pmac->key);
+
+   /* store it */
+   for (x = 0; x < pmac->block_len && x < (int)*outlen; x++) {
+       out[x] = pmac->checksum[x];
+   }
+   *outlen = x;
+
+#ifdef LTC_CLEAN_STACK
+   zeromem(pmac, sizeof(*pmac));
+#endif
+   return CRYPT_OK;
+}
+
+#endif
+