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| 1 /* crypto/ec/ecp_nist.c */ | |
| 2 /* | |
| 3 * Written by Nils Larsch for the OpenSSL project. | |
| 4 */ | |
| 5 /* ==================================================================== | |
| 6 * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved. | |
| 7 * | |
| 8 * Redistribution and use in source and binary forms, with or without | |
| 9 * modification, are permitted provided that the following conditions | |
| 10 * are met: | |
| 11 * | |
| 12 * 1. Redistributions of source code must retain the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer. | |
| 14 * | |
| 15 * 2. Redistributions in binary form must reproduce the above copyright | |
| 16 * notice, this list of conditions and the following disclaimer in | |
| 17 * the documentation and/or other materials provided with the | |
| 18 * distribution. | |
| 19 * | |
| 20 * 3. All advertising materials mentioning features or use of this | |
| 21 * software must display the following acknowledgment: | |
| 22 * "This product includes software developed by the OpenSSL Project | |
| 23 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
| 24 * | |
| 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
| 26 * endorse or promote products derived from this software without | |
| 27 * prior written permission. For written permission, please contact | |
| 28 * openssl-core@openssl.org. | |
| 29 * | |
| 30 * 5. Products derived from this software may not be called "OpenSSL" | |
| 31 * nor may "OpenSSL" appear in their names without prior written | |
| 32 * permission of the OpenSSL Project. | |
| 33 * | |
| 34 * 6. Redistributions of any form whatsoever must retain the following | |
| 35 * acknowledgment: | |
| 36 * "This product includes software developed by the OpenSSL Project | |
| 37 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
| 38 * | |
| 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
| 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
| 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 50 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 51 * ==================================================================== | |
| 52 * | |
| 53 * This product includes cryptographic software written by Eric Young | |
| 54 * (eay@cryptsoft.com). This product includes software written by Tim | |
| 55 * Hudson (tjh@cryptsoft.com). | |
| 56 * | |
| 57 */ | |
| 58 /* ==================================================================== | |
| 59 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
| 60 * Portions of this software developed by SUN MICROSYSTEMS, INC., | |
| 61 * and contributed to the OpenSSL project. | |
| 62 */ | |
| 63 | |
| 64 #include <limits.h> | |
| 65 | |
| 66 #include <openssl/err.h> | |
| 67 #include <openssl/obj_mac.h> | |
| 68 #include "ec_lcl.h" | |
| 69 | |
| 70 #ifdef OPENSSL_FIPS | |
| 71 #include <openssl/fips.h> | |
| 72 #endif | |
| 73 | |
| 74 const EC_METHOD *EC_GFp_nist_method(void) | |
| 75 { | |
| 76 #ifdef OPENSSL_FIPS | |
| 77 return fips_ec_gfp_nist_method(); | |
| 78 #else | |
| 79 static const EC_METHOD ret = { | |
| 80 EC_FLAGS_DEFAULT_OCT, | |
| 81 NID_X9_62_prime_field, | |
| 82 ec_GFp_simple_group_init, | |
| 83 ec_GFp_simple_group_finish, | |
| 84 ec_GFp_simple_group_clear_finish, | |
| 85 ec_GFp_nist_group_copy, | |
| 86 ec_GFp_nist_group_set_curve, | |
| 87 ec_GFp_simple_group_get_curve, | |
| 88 ec_GFp_simple_group_get_degree, | |
| 89 ec_GFp_simple_group_check_discriminant, | |
| 90 ec_GFp_simple_point_init, | |
| 91 ec_GFp_simple_point_finish, | |
| 92 ec_GFp_simple_point_clear_finish, | |
| 93 ec_GFp_simple_point_copy, | |
| 94 ec_GFp_simple_point_set_to_infinity, | |
| 95 ec_GFp_simple_set_Jprojective_coordinates_GFp, | |
| 96 ec_GFp_simple_get_Jprojective_coordinates_GFp, | |
| 97 ec_GFp_simple_point_set_affine_coordinates, | |
| 98 ec_GFp_simple_point_get_affine_coordinates, | |
| 99 0,0,0, | |
| 100 ec_GFp_simple_add, | |
| 101 ec_GFp_simple_dbl, | |
| 102 ec_GFp_simple_invert, | |
| 103 ec_GFp_simple_is_at_infinity, | |
| 104 ec_GFp_simple_is_on_curve, | |
| 105 ec_GFp_simple_cmp, | |
| 106 ec_GFp_simple_make_affine, | |
| 107 ec_GFp_simple_points_make_affine, | |
| 108 0 /* mul */, | |
| 109 0 /* precompute_mult */, | |
| 110 0 /* have_precompute_mult */, | |
| 111 ec_GFp_nist_field_mul, | |
| 112 ec_GFp_nist_field_sqr, | |
| 113 0 /* field_div */, | |
| 114 0 /* field_encode */, | |
| 115 0 /* field_decode */, | |
| 116 0 /* field_set_to_one */ }; | |
| 117 | |
| 118 return &ret; | |
| 119 #endif | |
| 120 } | |
| 121 | |
| 122 int ec_GFp_nist_group_copy(EC_GROUP *dest, const EC_GROUP *src) | |
| 123 { | |
| 124 dest->field_mod_func = src->field_mod_func; | |
| 125 | |
| 126 return ec_GFp_simple_group_copy(dest, src); | |
| 127 } | |
| 128 | |
| 129 int ec_GFp_nist_group_set_curve(EC_GROUP *group, const BIGNUM *p, | |
| 130 const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) | |
| 131 { | |
| 132 int ret = 0; | |
| 133 BN_CTX *new_ctx = NULL; | |
| 134 BIGNUM *tmp_bn; | |
| 135 | |
| 136 if (ctx == NULL) | |
| 137 if ((ctx = new_ctx = BN_CTX_new()) == NULL) return 0; | |
| 138 | |
| 139 BN_CTX_start(ctx); | |
| 140 if ((tmp_bn = BN_CTX_get(ctx)) == NULL) goto err; | |
| 141 | |
| 142 if (BN_ucmp(BN_get0_nist_prime_192(), p) == 0) | |
| 143 group->field_mod_func = BN_nist_mod_192; | |
| 144 else if (BN_ucmp(BN_get0_nist_prime_224(), p) == 0) | |
| 145 group->field_mod_func = BN_nist_mod_224; | |
| 146 else if (BN_ucmp(BN_get0_nist_prime_256(), p) == 0) | |
| 147 group->field_mod_func = BN_nist_mod_256; | |
| 148 else if (BN_ucmp(BN_get0_nist_prime_384(), p) == 0) | |
| 149 group->field_mod_func = BN_nist_mod_384; | |
| 150 else if (BN_ucmp(BN_get0_nist_prime_521(), p) == 0) | |
| 151 group->field_mod_func = BN_nist_mod_521; | |
| 152 else | |
| 153 { | |
| 154 ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_NIST_PRIME); | |
| 155 goto err; | |
| 156 } | |
| 157 | |
| 158 ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx); | |
| 159 | |
| 160 err: | |
| 161 BN_CTX_end(ctx); | |
| 162 if (new_ctx != NULL) | |
| 163 BN_CTX_free(new_ctx); | |
| 164 return ret; | |
| 165 } | |
| 166 | |
| 167 | |
| 168 int ec_GFp_nist_field_mul(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, | |
| 169 const BIGNUM *b, BN_CTX *ctx) | |
| 170 { | |
| 171 int ret=0; | |
| 172 BN_CTX *ctx_new=NULL; | |
| 173 | |
| 174 if (!group || !r || !a || !b) | |
| 175 { | |
| 176 ECerr(EC_F_EC_GFP_NIST_FIELD_MUL, ERR_R_PASSED_NULL_PARAMETER); | |
| 177 goto err; | |
| 178 } | |
| 179 if (!ctx) | |
| 180 if ((ctx_new = ctx = BN_CTX_new()) == NULL) goto err; | |
| 181 | |
| 182 if (!BN_mul(r, a, b, ctx)) goto err; | |
| 183 if (!group->field_mod_func(r, r, &group->field, ctx)) | |
| 184 goto err; | |
| 185 | |
| 186 ret=1; | |
| 187 err: | |
| 188 if (ctx_new) | |
| 189 BN_CTX_free(ctx_new); | |
| 190 return ret; | |
| 191 } | |
| 192 | |
| 193 | |
| 194 int ec_GFp_nist_field_sqr(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, | |
| 195 BN_CTX *ctx) | |
| 196 { | |
| 197 int ret=0; | |
| 198 BN_CTX *ctx_new=NULL; | |
| 199 | |
| 200 if (!group || !r || !a) | |
| 201 { | |
| 202 ECerr(EC_F_EC_GFP_NIST_FIELD_SQR, EC_R_PASSED_NULL_PARAMETER); | |
| 203 goto err; | |
| 204 } | |
| 205 if (!ctx) | |
| 206 if ((ctx_new = ctx = BN_CTX_new()) == NULL) goto err; | |
| 207 | |
| 208 if (!BN_sqr(r, a, ctx)) goto err; | |
| 209 if (!group->field_mod_func(r, r, &group->field, ctx)) | |
| 210 goto err; | |
| 211 | |
| 212 ret=1; | |
| 213 err: | |
| 214 if (ctx_new) | |
| 215 BN_CTX_free(ctx_new); | |
| 216 return ret; | |
| 217 } | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master