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annotate nss/lib/freebl/ecl/ecp.h @ 0:1e5118fa0cb1

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This is NSS with a Cmake Buildsyste To compile a static NSS library for Windows we've used the Chromium-NSS fork and added a Cmake buildsystem to compile it statically for Windows. See README.chromium for chromium changes and README.trustbridge for our modifications.
author Andre Heinecke <andre.heinecke@intevation.de>
date Mon, 28 Jul 2014 10:47:06 +0200
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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 __ecp_h_
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6 #define __ecp_h_
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7
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8 #include "ecl-priv.h"
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9
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10 /* Checks if point P(px, py) is at infinity. Uses affine coordinates. */
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11 mp_err ec_GFp_pt_is_inf_aff(const mp_int *px, const mp_int *py);
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12
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13 /* Sets P(px, py) to be the point at infinity. Uses affine coordinates. */
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14 mp_err ec_GFp_pt_set_inf_aff(mp_int *px, mp_int *py);
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15
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16 /* Computes R = P + Q where R is (rx, ry), P is (px, py) and Q is (qx,
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17 * qy). Uses affine coordinates. */
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18 mp_err ec_GFp_pt_add_aff(const mp_int *px, const mp_int *py,
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19 const mp_int *qx, const mp_int *qy, mp_int *rx,
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20 mp_int *ry, const ECGroup *group);
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21
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22 /* Computes R = P - Q. Uses affine coordinates. */
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23 mp_err ec_GFp_pt_sub_aff(const mp_int *px, const mp_int *py,
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24 const mp_int *qx, const mp_int *qy, mp_int *rx,
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25 mp_int *ry, const ECGroup *group);
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26
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27 /* Computes R = 2P. Uses affine coordinates. */
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28 mp_err ec_GFp_pt_dbl_aff(const mp_int *px, const mp_int *py, mp_int *rx,
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29 mp_int *ry, const ECGroup *group);
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30
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31 /* Validates a point on a GFp curve. */
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32 mp_err ec_GFp_validate_point(const mp_int *px, const mp_int *py, const ECGroup *group);
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33
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34 #ifdef ECL_ENABLE_GFP_PT_MUL_AFF
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35 /* Computes R = nP where R is (rx, ry) and P is (px, py). The parameters
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36 * a, b and p are the elliptic curve coefficients and the prime that
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37 * determines the field GFp. Uses affine coordinates. */
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38 mp_err ec_GFp_pt_mul_aff(const mp_int *n, const mp_int *px,
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39 const mp_int *py, mp_int *rx, mp_int *ry,
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40 const ECGroup *group);
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41 #endif
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42
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43 /* Converts a point P(px, py) from affine coordinates to Jacobian
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44 * projective coordinates R(rx, ry, rz). */
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45 mp_err ec_GFp_pt_aff2jac(const mp_int *px, const mp_int *py, mp_int *rx,
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46 mp_int *ry, mp_int *rz, const ECGroup *group);
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47
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48 /* Converts a point P(px, py, pz) from Jacobian projective coordinates to
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49 * affine coordinates R(rx, ry). */
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50 mp_err ec_GFp_pt_jac2aff(const mp_int *px, const mp_int *py,
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51 const mp_int *pz, mp_int *rx, mp_int *ry,
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52 const ECGroup *group);
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53
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54 /* Checks if point P(px, py, pz) is at infinity. Uses Jacobian
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55 * coordinates. */
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56 mp_err ec_GFp_pt_is_inf_jac(const mp_int *px, const mp_int *py,
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57 const mp_int *pz);
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58
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59 /* Sets P(px, py, pz) to be the point at infinity. Uses Jacobian
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60 * coordinates. */
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61 mp_err ec_GFp_pt_set_inf_jac(mp_int *px, mp_int *py, mp_int *pz);
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62
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63 /* Computes R = P + Q where R is (rx, ry, rz), P is (px, py, pz) and Q is
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64 * (qx, qy, qz). Uses Jacobian coordinates. */
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65 mp_err ec_GFp_pt_add_jac_aff(const mp_int *px, const mp_int *py,
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66 const mp_int *pz, const mp_int *qx,
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67 const mp_int *qy, mp_int *rx, mp_int *ry,
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68 mp_int *rz, const ECGroup *group);
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69
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70 /* Computes R = 2P. Uses Jacobian coordinates. */
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71 mp_err ec_GFp_pt_dbl_jac(const mp_int *px, const mp_int *py,
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72 const mp_int *pz, mp_int *rx, mp_int *ry,
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73 mp_int *rz, const ECGroup *group);
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74
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75 #ifdef ECL_ENABLE_GFP_PT_MUL_JAC
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76 /* Computes R = nP where R is (rx, ry) and P is (px, py). The parameters
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77 * a, b and p are the elliptic curve coefficients and the prime that
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78 * determines the field GFp. Uses Jacobian coordinates. */
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79 mp_err ec_GFp_pt_mul_jac(const mp_int *n, const mp_int *px,
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80 const mp_int *py, mp_int *rx, mp_int *ry,
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81 const ECGroup *group);
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82 #endif
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83
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84 /* Computes R(x, y) = k1 * G + k2 * P(x, y), where G is the generator
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85 * (base point) of the group of points on the elliptic curve. Allows k1 =
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86 * NULL or { k2, P } = NULL. Implemented using mixed Jacobian-affine
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87 * coordinates. Input and output values are assumed to be NOT
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88 * field-encoded and are in affine form. */
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89 mp_err
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90 ec_GFp_pts_mul_jac(const mp_int *k1, const mp_int *k2, const mp_int *px,
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91 const mp_int *py, mp_int *rx, mp_int *ry,
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92 const ECGroup *group);
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93
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94 /* Computes R = nP where R is (rx, ry) and P is the base point. Elliptic
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95 * curve points P and R can be identical. Uses mixed Modified-Jacobian
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96 * co-ordinates for doubling and Chudnovsky Jacobian coordinates for
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97 * additions. Assumes input is already field-encoded using field_enc, and
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98 * returns output that is still field-encoded. Uses 5-bit window NAF
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99 * method (algorithm 11) for scalar-point multiplication from Brown,
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100 * Hankerson, Lopez, Menezes. Software Implementation of the NIST Elliptic
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101 * Curves Over Prime Fields. */
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102 mp_err
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103 ec_GFp_pt_mul_jm_wNAF(const mp_int *n, const mp_int *px, const mp_int *py,
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104 mp_int *rx, mp_int *ry, const ECGroup *group);
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105
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106 #endif /* __ecp_h_ */
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