1 files changed, 132 insertions, 0 deletions
diff --git a/lib/nettle/gost/ecc-gost256cpa.c b/lib/nettle/gost/ecc-gost256cpa.c
new file mode 100644
index 0000000000..6f891b087f
--- /dev/null
+++ b/lib/nettle/gost/ecc-gost256cpa.c
@@ -0,0 +1,132 @@
+/* ecc-gost256cpa.c
+
+   Compile time constant (but machine dependent) tables.
+
+   Copyright (C) 2013, 2014 Niels Möller
+
+   This file is part of GNU Nettle.
+
+   GNU Nettle is free software: you can redistribute it and/or
+   modify it under the terms of either:
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * 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.
+
+   or both in parallel, as here.
+
+   GNU Nettle 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 copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see http://www.gnu.org/licenses/.
+*/
+
+/* Development of Nettle's ECC support was funded by the .SE Internet Fund. */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <gnutls_int.h>
+
+#include <nettle/ecc.h>
+#include "ecc-internal.h"
+#include "ecc-gost-curve.h"
+
+#define USE_REDC (ECC_REDC_SIZE != 0)
+
+#if GMP_NUMB_BITS == 32
+#include "ecc-gost256cpa-32.h"
+#elif GMP_NUMB_BITS == 64
+#include "ecc-gost256cpa-64.h"
+#else
+#error unsupported configuration
+#endif
+
+#if ECC_REDC_SIZE > 0
+#  define ecc_256_redc ecc_pp1_redc
+#elif ECC_REDC_SIZE == 0
+#  define ecc_256_redc NULL
+#else
+# error Configuration error
+#endif
+
+#define ecc_256_modp ecc_mod
+#define ecc_256_modq ecc_mod
+
+static const struct ecc_curve _gnutls_gost_256cpa =
+{
+  {
+    256,
+    ECC_LIMB_SIZE,
+    ECC_BMODP_SIZE,
+    ECC_REDC_SIZE,
+    ECC_MOD_INV_ITCH (ECC_LIMB_SIZE),
+    0,
+
+    ecc_p,
+    ecc_Bmodp,
+    ecc_Bmodp_shifted,
+    ecc_redc_ppm1,
+
+    ecc_pp1h,
+    ecc_256_modp,
+    USE_REDC ? ecc_256_redc : ecc_256_modp,
+    ecc_mod_inv,
+    NULL,
+  },
+  {
+    256,
+    ECC_LIMB_SIZE,
+    ECC_BMODQ_SIZE,
+    0,
+    ECC_MOD_INV_ITCH (ECC_LIMB_SIZE),
+    0,
+
+    ecc_q,
+    ecc_Bmodq,
+    ecc_Bmodq_shifted,
+    NULL,
+    ecc_qp1h,
+
+    ecc_256_modq,
+    ecc_256_modq,
+    ecc_mod_inv,
+    NULL,
+  },
+
+  USE_REDC,
+  ECC_PIPPENGER_K,
+  ECC_PIPPENGER_C,
+
+  ECC_ADD_JJJ_ITCH (ECC_LIMB_SIZE),
+  ECC_MUL_A_ITCH (ECC_LIMB_SIZE),
+  ECC_MUL_G_ITCH (ECC_LIMB_SIZE),
+  ECC_J_TO_A_ITCH (ECC_LIMB_SIZE),
+
+  ecc_add_jjj,
+  ecc_mul_a,
+  ecc_mul_g,
+  ecc_j_to_a,
+
+  ecc_b,
+  ecc_g,
+  NULL,
+  ecc_unit,
+  ecc_table
+};
+
+const struct ecc_curve *nettle_get_gost_256cpa(void)
+{
+  return &_gnutls_gost_256cpa;
+}