Diff: wolfssl/wolfcrypt/wolfmath.h

Revision:

13:f67a6c6013ca

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wolfssl/wolfcrypt/wolfmath.h	Tue Aug 22 10:48:22 2017 +0000
@@ -0,0 +1,70 @@
+/* wolfmath.h
+ *
+ * Copyright (C) 2006-2016 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+#if defined(HAVE_WOLF_BIGINT) && !defined(WOLF_BIGINT_DEFINED)
+    /* raw big integer */
+    typedef struct WC_BIGINT {
+        byte*   buf;
+        word32  len;
+        void*   heap;
+    } WC_BIGINT;
+
+    #define WOLF_BIGINT_DEFINED
+#endif
+
+
+/* only define functions if mp_int has been declared */
+#ifdef MP_INT_DEFINED
+
+#ifndef __WOLFMATH_H__
+#define __WOLFMATH_H__
+
+    /* timing resistance array */
+    #if !defined(WC_NO_CACHE_RESISTANT) && \
+        ((defined(HAVE_ECC) && defined(ECC_TIMING_RESISTANT)) || \
+         (defined(USE_FAST_MATH) && defined(TFM_TIMING_RESISTANT)))
+
+        extern const wolfssl_word wc_off_on_addr[2];
+    #endif
+
+    /* common math functions */
+    int get_digit_count(mp_int* a);
+    mp_digit get_digit(mp_int* a, int n);
+    int get_rand_digit(WC_RNG* rng, mp_digit* d);
+    int mp_rand(mp_int* a, int digits, WC_RNG* rng);
+
+
+    #ifdef HAVE_WOLF_BIGINT
+        void wc_bigint_init(WC_BIGINT* a);
+        int wc_bigint_alloc(WC_BIGINT* a, word32 sz);
+        int wc_bigint_from_unsigned_bin(WC_BIGINT* a, const byte* in, word32 inlen);
+        int wc_bigint_to_unsigned_bin(WC_BIGINT* a, byte* out, word32* outlen);
+        void wc_bigint_zero(WC_BIGINT* a);
+        void wc_bigint_free(WC_BIGINT* a);
+
+        int wc_mp_to_bigint(mp_int* src, WC_BIGINT* dst);
+        int wc_bigint_to_mp(WC_BIGINT* src, mp_int* dst);
+    #endif /* HAVE_WOLF_BIGINT */
+
+#endif /* __WOLFMATH_H__ */
+
+#endif /* MP_INT_DEFINED */
+