import libtommath 1.0

1 files changed, 119 insertions, 0 deletions

diff --git a/libtommath/tommath_private.h b/libtommath/tommath_private.h
new file mode 100644
index 0000000..bc7cd35
--- /dev/null
+++ b/libtommath/tommath_private.h
@@ -0,0 +1,119 @@
+/* LibTomMath, multiple-precision integer library -- Tom St Denis
+ *
+ * LibTomMath is a library that provides multiple-precision
+ * integer arithmetic as well as number theoretic functionality.
+ *
+ * The library was designed directly after the MPI library by
+ * Michael Fromberger but has been written from scratch with
+ * additional optimizations in place.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tstdenis82@gmail.com, http://math.libtomcrypt.com
+ */
+#ifndef TOMMATH_PRIV_H_
+#define TOMMATH_PRIV_H_
+
+#include <tommath.h>
+#include <ctype.h>
+
+#define MIN(x,y) (((x) < (y)) ? (x) : (y))
+
+#define MAX(x,y) (((x) > (y)) ? (x) : (y))
+
+#ifdef __cplusplus
+extern "C" {
+
+/* C++ compilers don't like assigning void * to mp_digit * */
+#define  OPT_CAST(x)  (x *)
+
+#else
+
+/* C on the other hand doesn't care */
+#define  OPT_CAST(x)
+
+#endif
+
+/* define heap macros */
+#ifndef XMALLOC
+   /* default to libc stuff */
+   #define XMALLOC  malloc
+   #define XFREE    free
+   #define XREALLOC realloc
+   #define XCALLOC  calloc
+#else
+   /* prototypes for our heap functions */
+   extern void *XMALLOC(size_t n);
+   extern void *XREALLOC(void *p, size_t n);
+   extern void *XCALLOC(size_t n, size_t s);
+   extern void XFREE(void *p);
+#endif
+
+/* lowlevel functions, do not call! */
+int s_mp_add(mp_int *a, mp_int *b, mp_int *c);
+int s_mp_sub(mp_int *a, mp_int *b, mp_int *c);
+#define s_mp_mul(a, b, c) s_mp_mul_digs(a, b, c, (a)->used + (b)->used + 1)
+int fast_s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs);
+int s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs);
+int fast_s_mp_mul_high_digs(mp_int *a, mp_int *b, mp_int *c, int digs);
+int s_mp_mul_high_digs(mp_int *a, mp_int *b, mp_int *c, int digs);
+int fast_s_mp_sqr(mp_int *a, mp_int *b);
+int s_mp_sqr(mp_int *a, mp_int *b);
+int mp_karatsuba_mul(mp_int *a, mp_int *b, mp_int *c);
+int mp_toom_mul(mp_int *a, mp_int *b, mp_int *c);
+int mp_karatsuba_sqr(mp_int *a, mp_int *b);
+int mp_toom_sqr(mp_int *a, mp_int *b);
+int fast_mp_invmod(mp_int *a, mp_int *b, mp_int *c);
+int mp_invmod_slow (mp_int * a, mp_int * b, mp_int * c);
+int fast_mp_montgomery_reduce(mp_int *x, mp_int *n, mp_digit rho);
+int mp_exptmod_fast(mp_int *G, mp_int *X, mp_int *P, mp_int *Y, int redmode);
+int s_mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y, int redmode);
+void bn_reverse(unsigned char *s, int len);
+
+extern const char *mp_s_rmap;
+
+/* Fancy macro to set an MPI from another type.
+ * There are several things assumed:
+ *  x is the counter and unsigned
+ *  a is the pointer to the MPI
+ *  b is the original value that should be set in the MPI.
+ */
+#define MP_SET_XLONG(func_name, type)                    \
+int func_name (mp_int * a, type b)                       \
+{                                                        \
+  unsigned int  x;                                       \
+  int           res;                                     \
+                                                         \
+  mp_zero (a);                                           \
+                                                         \
+  /* set four bits at a time */                          \
+  for (x = 0; x < (sizeof(type) * 2u); x++) {            \
+    /* shift the number up four bits */                  \
+    if ((res = mp_mul_2d (a, 4, a)) != MP_OKAY) {        \
+      return res;                                        \
+    }                                                    \
+                                                         \
+    /* OR in the top four bits of the source */          \
+    a->dp[0] |= (b >> ((sizeof(type) * 8u) - 4u)) & 15u; \
+                                                         \
+    /* shift the source up to the next four bits */      \
+    b <<= 4;                                             \
+                                                         \
+    /* ensure that digits are not clamped off */         \
+    a->used += 1;                                        \
+  }                                                      \
+  mp_clamp (a);                                          \
+  return MP_OKAY;                                        \
+}
+
+#ifdef __cplusplus
+   }
+#endif
+
+#endif
+
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */