Mercurial > trustbridge > nss-cmake-static

annotate nss/lib/freebl/ecl/ecl-priv.h @ 4:b513267f632f tip

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Build DBM module
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:58:03 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* This Source Code Form is subject to the terms of the Mozilla Public
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2 * License, v. 2.0. If a copy of the MPL was not distributed with this
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3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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4
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5 #ifndef __ecl_priv_h_
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6 #define __ecl_priv_h_
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7
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8 #include "ecl.h"
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9 #include "mpi.h"
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10 #include "mplogic.h"
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11
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12 /* MAX_FIELD_SIZE_DIGITS is the maximum size of field element supported */
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13 /* the following needs to go away... */
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14 #if defined(MP_USE_LONG_LONG_DIGIT) || defined(MP_USE_LONG_DIGIT)
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15 #define ECL_SIXTY_FOUR_BIT
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16 #else
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17 #define ECL_THIRTY_TWO_BIT
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18 #endif
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19
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20 #define ECL_CURVE_DIGITS(curve_size_in_bits) \
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21 (((curve_size_in_bits)+(sizeof(mp_digit)*8-1))/(sizeof(mp_digit)*8))
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22 #define ECL_BITS (sizeof(mp_digit)*8)
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23 #define ECL_MAX_FIELD_SIZE_DIGITS (80/sizeof(mp_digit))
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24
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25 /* Gets the i'th bit in the binary representation of a. If i >= length(a),
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26 * then return 0. (The above behaviour differs from mpl_get_bit, which
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27 * causes an error if i >= length(a).) */
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28 #define MP_GET_BIT(a, i) \
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29 ((i) >= mpl_significant_bits((a))) ? 0 : mpl_get_bit((a), (i))
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30
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31 #if !defined(MP_NO_MP_WORD) && !defined(MP_NO_ADD_WORD)
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32 #define MP_ADD_CARRY(a1, a2, s, cin, cout) \
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33 { mp_word w; \
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34 w = ((mp_word)(cin)) + (a1) + (a2); \
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35 s = ACCUM(w); \
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36 cout = CARRYOUT(w); }
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37
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38 #define MP_SUB_BORROW(a1, a2, s, bin, bout) \
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39 { mp_word w; \
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40 w = ((mp_word)(a1)) - (a2) - (bin); \
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41 s = ACCUM(w); \
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42 bout = (w >> MP_DIGIT_BIT) & 1; }
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43
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44 #else
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45 /* NOTE,
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46 * cin and cout could be the same variable.
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47 * bin and bout could be the same variable.
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48 * a1 or a2 and s could be the same variable.
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49 * don't trash those outputs until their respective inputs have
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50 * been read. */
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51 #define MP_ADD_CARRY(a1, a2, s, cin, cout) \
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52 { mp_digit tmp,sum; \
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53 tmp = (a1); \
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54 sum = tmp + (a2); \
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55 tmp = (sum < tmp); /* detect overflow */ \
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56 s = sum += (cin); \
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57 cout = tmp + (sum < (cin)); }
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58
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59 #define MP_SUB_BORROW(a1, a2, s, bin, bout) \
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60 { mp_digit tmp; \
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61 tmp = (a1); \
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62 s = tmp - (a2); \
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63 tmp = (s > tmp); /* detect borrow */ \
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64 if ((bin) && !s--) tmp++; \
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65 bout = tmp; }
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66 #endif
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67
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68
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69 struct GFMethodStr;
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70 typedef struct GFMethodStr GFMethod;
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71 struct GFMethodStr {
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72 /* Indicates whether the structure was constructed from dynamic memory
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73 * or statically created. */
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74 int constructed;
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75 /* Irreducible that defines the field. For prime fields, this is the
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76 * prime p. For binary polynomial fields, this is the bitstring
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77 * representation of the irreducible polynomial. */
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78 mp_int irr;
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79 /* For prime fields, the value irr_arr[0] is the number of bits in the
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80 * field. For binary polynomial fields, the irreducible polynomial
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81 * f(t) is represented as an array of unsigned int[], where f(t) is
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82 * of the form: f(t) = t^p[0] + t^p[1] + ... + t^p[4] where m = p[0]
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83 * > p[1] > ... > p[4] = 0. */
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84 unsigned int irr_arr[5];
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85 /* Field arithmetic methods. All methods (except field_enc and
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86 * field_dec) are assumed to take field-encoded parameters and return
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87 * field-encoded values. All methods (except field_enc and field_dec)
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88 * are required to be implemented. */
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89 mp_err (*field_add) (const mp_int *a, const mp_int *b, mp_int *r,
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90 const GFMethod *meth);
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91 mp_err (*field_neg) (const mp_int *a, mp_int *r, const GFMethod *meth);
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92 mp_err (*field_sub) (const mp_int *a, const mp_int *b, mp_int *r,
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93 const GFMethod *meth);
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94 mp_err (*field_mod) (const mp_int *a, mp_int *r, const GFMethod *meth);
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95 mp_err (*field_mul) (const mp_int *a, const mp_int *b, mp_int *r,
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96 const GFMethod *meth);
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97 mp_err (*field_sqr) (const mp_int *a, mp_int *r, const GFMethod *meth);
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98 mp_err (*field_div) (const mp_int *a, const mp_int *b, mp_int *r,
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99 const GFMethod *meth);
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100 mp_err (*field_enc) (const mp_int *a, mp_int *r, const GFMethod *meth);
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101 mp_err (*field_dec) (const mp_int *a, mp_int *r, const GFMethod *meth);
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102 /* Extra storage for implementation-specific data. Any memory
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103 * allocated to these extra fields will be cleared by extra_free. */
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104 void *extra1;
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105 void *extra2;
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106 void (*extra_free) (GFMethod *meth);
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107 };
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108
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109 /* Construct generic GFMethods. */
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110 GFMethod *GFMethod_consGFp(const mp_int *irr);
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111 GFMethod *GFMethod_consGFp_mont(const mp_int *irr);
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112 GFMethod *GFMethod_consGF2m(const mp_int *irr,
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113 const unsigned int irr_arr[5]);
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114 /* Free the memory allocated (if any) to a GFMethod object. */
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115 void GFMethod_free(GFMethod *meth);
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116
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117 struct ECGroupStr {
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118 /* Indicates whether the structure was constructed from dynamic memory
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119 * or statically created. */
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120 int constructed;
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121 /* Field definition and arithmetic. */
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122 GFMethod *meth;
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123 /* Textual representation of curve name, if any. */
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124 char *text;
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125 /* Curve parameters, field-encoded. */
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126 mp_int curvea, curveb;
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127 /* x and y coordinates of the base point, field-encoded. */
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128 mp_int genx, geny;
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129 /* Order and cofactor of the base point. */
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130 mp_int order;
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131 int cofactor;
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132 /* Point arithmetic methods. All methods are assumed to take
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133 * field-encoded parameters and return field-encoded values. All
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134 * methods (except base_point_mul and points_mul) are required to be
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135 * implemented. */
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136 mp_err (*point_add) (const mp_int *px, const mp_int *py,
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137 const mp_int *qx, const mp_int *qy, mp_int *rx,
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138 mp_int *ry, const ECGroup *group);
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139 mp_err (*point_sub) (const mp_int *px, const mp_int *py,
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140 const mp_int *qx, const mp_int *qy, mp_int *rx,
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141 mp_int *ry, const ECGroup *group);
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142 mp_err (*point_dbl) (const mp_int *px, const mp_int *py, mp_int *rx,
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143 mp_int *ry, const ECGroup *group);
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144 mp_err (*point_mul) (const mp_int *n, const mp_int *px,
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145 const mp_int *py, mp_int *rx, mp_int *ry,
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146 const ECGroup *group);
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147 mp_err (*base_point_mul) (const mp_int *n, mp_int *rx, mp_int *ry,
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148 const ECGroup *group);
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149 mp_err (*points_mul) (const mp_int *k1, const mp_int *k2,
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150 const mp_int *px, const mp_int *py, mp_int *rx,
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151 mp_int *ry, const ECGroup *group);
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152 mp_err (*validate_point) (const mp_int *px, const mp_int *py, const ECGroup *group);
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153 /* Extra storage for implementation-specific data. Any memory
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154 * allocated to these extra fields will be cleared by extra_free. */
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155 void *extra1;
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156 void *extra2;
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157 void (*extra_free) (ECGroup *group);
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158 };
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159
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160 /* Wrapper functions for generic prime field arithmetic. */
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161 mp_err ec_GFp_add(const mp_int *a, const mp_int *b, mp_int *r,
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162 const GFMethod *meth);
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163 mp_err ec_GFp_neg(const mp_int *a, mp_int *r, const GFMethod *meth);
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164 mp_err ec_GFp_sub(const mp_int *a, const mp_int *b, mp_int *r,
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165 const GFMethod *meth);
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166
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167 /* fixed length in-line adds. Count is in words */
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168 mp_err ec_GFp_add_3(const mp_int *a, const mp_int *b, mp_int *r,
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169 const GFMethod *meth);
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170 mp_err ec_GFp_add_4(const mp_int *a, const mp_int *b, mp_int *r,
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171 const GFMethod *meth);
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172 mp_err ec_GFp_add_5(const mp_int *a, const mp_int *b, mp_int *r,
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173 const GFMethod *meth);
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174 mp_err ec_GFp_add_6(const mp_int *a, const mp_int *b, mp_int *r,
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175 const GFMethod *meth);
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176 mp_err ec_GFp_sub_3(const mp_int *a, const mp_int *b, mp_int *r,
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177 const GFMethod *meth);
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178 mp_err ec_GFp_sub_4(const mp_int *a, const mp_int *b, mp_int *r,
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179 const GFMethod *meth);
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180 mp_err ec_GFp_sub_5(const mp_int *a, const mp_int *b, mp_int *r,
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181 const GFMethod *meth);
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182 mp_err ec_GFp_sub_6(const mp_int *a, const mp_int *b, mp_int *r,
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183 const GFMethod *meth);
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184
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185 mp_err ec_GFp_mod(const mp_int *a, mp_int *r, const GFMethod *meth);
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186 mp_err ec_GFp_mul(const mp_int *a, const mp_int *b, mp_int *r,
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187 const GFMethod *meth);
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188 mp_err ec_GFp_sqr(const mp_int *a, mp_int *r, const GFMethod *meth);
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189 mp_err ec_GFp_div(const mp_int *a, const mp_int *b, mp_int *r,
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Andre Heinecke <andre.heinecke@intevation.de>
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190 const GFMethod *meth);
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191 /* Wrapper functions for generic binary polynomial field arithmetic. */
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192 mp_err ec_GF2m_add(const mp_int *a, const mp_int *b, mp_int *r,
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Andre Heinecke <andre.heinecke@intevation.de>
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193 const GFMethod *meth);
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194 mp_err ec_GF2m_neg(const mp_int *a, mp_int *r, const GFMethod *meth);
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195 mp_err ec_GF2m_mod(const mp_int *a, mp_int *r, const GFMethod *meth);
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196 mp_err ec_GF2m_mul(const mp_int *a, const mp_int *b, mp_int *r,
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Andre Heinecke <andre.heinecke@intevation.de>
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197 const GFMethod *meth);
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198 mp_err ec_GF2m_sqr(const mp_int *a, mp_int *r, const GFMethod *meth);
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199 mp_err ec_GF2m_div(const mp_int *a, const mp_int *b, mp_int *r,
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Andre Heinecke <andre.heinecke@intevation.de>
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200 const GFMethod *meth);
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201
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202 /* Montgomery prime field arithmetic. */
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Andre Heinecke <andre.heinecke@intevation.de>
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203 mp_err ec_GFp_mul_mont(const mp_int *a, const mp_int *b, mp_int *r,
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Andre Heinecke <andre.heinecke@intevation.de>
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204 const GFMethod *meth);
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205 mp_err ec_GFp_sqr_mont(const mp_int *a, mp_int *r, const GFMethod *meth);
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206 mp_err ec_GFp_div_mont(const mp_int *a, const mp_int *b, mp_int *r,
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Andre Heinecke <andre.heinecke@intevation.de>
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207 const GFMethod *meth);
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208 mp_err ec_GFp_enc_mont(const mp_int *a, mp_int *r, const GFMethod *meth);
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209 mp_err ec_GFp_dec_mont(const mp_int *a, mp_int *r, const GFMethod *meth);
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210 void ec_GFp_extra_free_mont(GFMethod *meth);
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211
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212 /* point multiplication */
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213 mp_err ec_pts_mul_basic(const mp_int *k1, const mp_int *k2,
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Andre Heinecke <andre.heinecke@intevation.de>
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214 const mp_int *px, const mp_int *py, mp_int *rx,
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215 mp_int *ry, const ECGroup *group);
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216 mp_err ec_pts_mul_simul_w2(const mp_int *k1, const mp_int *k2,
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217 const mp_int *px, const mp_int *py, mp_int *rx,
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218 mp_int *ry, const ECGroup *group);
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219
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220 /* Computes the windowed non-adjacent-form (NAF) of a scalar. Out should
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221 * be an array of signed char's to output to, bitsize should be the number
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222 * of bits of out, in is the original scalar, and w is the window size.
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223 * NAF is discussed in the paper: D. Hankerson, J. Hernandez and A.
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224 * Menezes, "Software implementation of elliptic curve cryptography over
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225 * binary fields", Proc. CHES 2000. */
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226 mp_err ec_compute_wNAF(signed char *out, int bitsize, const mp_int *in,
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Andre Heinecke <andre.heinecke@intevation.de>
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diff changeset
227 int w);
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228
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229 /* Optimized field arithmetic */
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230 mp_err ec_group_set_gfp192(ECGroup *group, ECCurveName);
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231 mp_err ec_group_set_gfp224(ECGroup *group, ECCurveName);
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232 mp_err ec_group_set_gfp256(ECGroup *group, ECCurveName);
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233 mp_err ec_group_set_gfp384(ECGroup *group, ECCurveName);
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234 mp_err ec_group_set_gfp521(ECGroup *group, ECCurveName);
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235 mp_err ec_group_set_gf2m163(ECGroup *group, ECCurveName name);
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236 mp_err ec_group_set_gf2m193(ECGroup *group, ECCurveName name);
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237 mp_err ec_group_set_gf2m233(ECGroup *group, ECCurveName name);
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238
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239 /* Optimized point multiplication */
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Andre Heinecke <andre.heinecke@intevation.de>
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240 mp_err ec_group_set_gfp256_32(ECGroup *group, ECCurveName name);
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241
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242 /* Optimized floating-point arithmetic */
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243 #ifdef ECL_USE_FP
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244 mp_err ec_group_set_secp160r1_fp(ECGroup *group);
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245 mp_err ec_group_set_nistp192_fp(ECGroup *group);
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246 mp_err ec_group_set_nistp224_fp(ECGroup *group);
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247 #endif
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248
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249 #endif /* __ecl_priv_h_ */
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