ecc-224.c 2.66 KB
Newer Older
1
/* ecc-224.c
2 3 4

   Compile time constant (but machine dependent) tables.

5
   Copyright (C) 2013, 2014 Niels Möller
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

   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/.
*/
Niels Möller's avatar
Niels Möller committed
33

34
/* Development of Nettle's ECC support was funded by the .SE Internet Fund. */
Niels Möller's avatar
Niels Möller committed
35 36 37 38 39

#if HAVE_CONFIG_H
# include "config.h"
#endif

40
#include "ecc.h"
Niels Möller's avatar
Niels Möller committed
41 42
#include "ecc-internal.h"

43 44 45 46 47
#if HAVE_NATIVE_ecc_224_modp

#define USE_REDC 0
#define ecc_224_modp nettle_ecc_224_modp
void
48
ecc_224_modp (const struct ecc_modulo *m, mp_limb_t *rp);
49 50

#else
Niels Möller's avatar
Niels Möller committed
51
#define USE_REDC (ECC_REDC_SIZE != 0)
52
#define ecc_224_modp ecc_mod
53
#endif
Niels Möller's avatar
Niels Möller committed
54 55 56

#include "ecc-224.h"

57 58 59 60 61 62 63 64
#if ECC_REDC_SIZE < 0
# define ecc_224_redc ecc_pm1_redc
#elif ECC_REDC_SIZE == 0
# define ecc_224_redc NULL
#else
# error Configuration error
#endif

65
const struct ecc_curve _nettle_secp_224r1 =
Niels Möller's avatar
Niels Möller committed
66
{
67 68 69 70 71
  {
    224,
    ECC_LIMB_SIZE,    
    ECC_BMODP_SIZE,
    -ECC_REDC_SIZE,
72
    ECC_MOD_INV_ITCH (ECC_LIMB_SIZE),
73
    0,
74

75 76 77 78
    ecc_p,
    ecc_Bmodp,
    ecc_Bmodp_shifted,
    ecc_redc_ppm1,
79 80
    ecc_pp1h,

81 82
    ecc_224_modp,
    USE_REDC ? ecc_224_redc : ecc_224_modp,
83
    ecc_mod_inv,
84
    NULL,
85 86 87 88 89 90
  },
  {
    224,
    ECC_LIMB_SIZE,    
    ECC_BMODQ_SIZE,
    0,
91
    ECC_MOD_INV_ITCH (ECC_LIMB_SIZE),
92
    0,
93

94 95 96 97
    ecc_q,
    ecc_Bmodq,
    ecc_Bmodq_shifted,
    NULL,
98 99
    ecc_qp1h,

100 101
    ecc_mod,
    ecc_mod,
102
    ecc_mod_inv,
103
    NULL,
104 105
  },
  
Niels Möller's avatar
Niels Möller committed
106 107 108
  USE_REDC,
  ECC_PIPPENGER_K,
  ECC_PIPPENGER_C,
109

110
  ECC_ADD_JJA_ITCH (ECC_LIMB_SIZE),
111
  ECC_ADD_JJJ_ITCH (ECC_LIMB_SIZE),
112
  ECC_DUP_JJ_ITCH (ECC_LIMB_SIZE),
113 114 115 116
  ECC_MUL_A_ITCH (ECC_LIMB_SIZE),
  ECC_MUL_G_ITCH (ECC_LIMB_SIZE),
  ECC_J_TO_A_ITCH (ECC_LIMB_SIZE),

117
  ecc_add_jja,
118
  ecc_add_jjj,
119
  ecc_dup_jj,
120 121 122 123
  ecc_mul_a,
  ecc_mul_g,
  ecc_j_to_a,

Niels Möller's avatar
Niels Möller committed
124 125 126 127 128
  ecc_b,
  ecc_g,
  ecc_unit,
  ecc_table
};
129 130 131

const struct ecc_curve *nettle_get_secp_224r1(void)
{
132
  return &_nettle_secp_224r1;
133
}