]>
Commit | Line | Data |
---|---|---|
84b08eee DSH |
1 | /* crypto/ec/ec_lib.c */ |
2 | /* | |
3 | * Originally written by Bodo Moeller 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 | * Binary polynomial ECC support in OpenSSL originally developed by | |
61 | * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. | |
62 | */ | |
63 | ||
64 | #include <string.h> | |
65 | ||
66 | #include <openssl/err.h> | |
67 | #include <openssl/opensslv.h> | |
68 | ||
69 | #include "ec_lcl.h" | |
70 | ||
71 | int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, | |
72 | const BIGNUM *x, int y_bit, BN_CTX *ctx) | |
73 | { | |
74 | if (group->meth->point_set_compressed_coordinates == 0 | |
75 | && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) | |
76 | { | |
77 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
78 | return 0; | |
79 | } | |
80 | if (group->meth != point->meth) | |
81 | { | |
82 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); | |
83 | return 0; | |
84 | } | |
85 | if(group->meth->flags & EC_FLAGS_DEFAULT_OCT) | |
86 | { | |
87 | if (group->meth->field_type == NID_X9_62_prime_field) | |
88 | return ec_GFp_simple_set_compressed_coordinates( | |
89 | group, point, x, y_bit, ctx); | |
90 | else | |
1acc24a8 DSH |
91 | #ifdef OPENSSL_NO_EC2M |
92 | { | |
93 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, EC_R_GF2M_NOT_SUPPORTED); | |
94 | return 0; | |
95 | } | |
96 | #else | |
84b08eee DSH |
97 | return ec_GF2m_simple_set_compressed_coordinates( |
98 | group, point, x, y_bit, ctx); | |
1acc24a8 | 99 | #endif |
84b08eee DSH |
100 | } |
101 | return group->meth->point_set_compressed_coordinates(group, point, x, y_bit, ctx); | |
102 | } | |
103 | ||
104 | #ifndef OPENSSL_NO_EC2M | |
105 | int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group, EC_POINT *point, | |
106 | const BIGNUM *x, int y_bit, BN_CTX *ctx) | |
107 | { | |
108 | if (group->meth->point_set_compressed_coordinates == 0 | |
109 | && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) | |
110 | { | |
111 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
112 | return 0; | |
113 | } | |
114 | if (group->meth != point->meth) | |
115 | { | |
116 | ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M, EC_R_INCOMPATIBLE_OBJECTS); | |
117 | return 0; | |
118 | } | |
119 | if(group->meth->flags & EC_FLAGS_DEFAULT_OCT) | |
120 | { | |
121 | if (group->meth->field_type == NID_X9_62_prime_field) | |
122 | return ec_GFp_simple_set_compressed_coordinates( | |
123 | group, point, x, y_bit, ctx); | |
124 | else | |
125 | return ec_GF2m_simple_set_compressed_coordinates( | |
126 | group, point, x, y_bit, ctx); | |
127 | } | |
128 | return group->meth->point_set_compressed_coordinates(group, point, x, y_bit, ctx); | |
129 | } | |
130 | #endif | |
131 | ||
132 | size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *point, point_conversion_form_t form, | |
133 | unsigned char *buf, size_t len, BN_CTX *ctx) | |
134 | { | |
135 | if (group->meth->point2oct == 0 | |
136 | && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) | |
137 | { | |
138 | ECerr(EC_F_EC_POINT_POINT2OCT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
139 | return 0; | |
140 | } | |
141 | if (group->meth != point->meth) | |
142 | { | |
143 | ECerr(EC_F_EC_POINT_POINT2OCT, EC_R_INCOMPATIBLE_OBJECTS); | |
144 | return 0; | |
145 | } | |
146 | if(group->meth->flags & EC_FLAGS_DEFAULT_OCT) | |
147 | { | |
148 | if (group->meth->field_type == NID_X9_62_prime_field) | |
149 | return ec_GFp_simple_point2oct(group, point, | |
150 | form, buf, len, ctx); | |
151 | else | |
1acc24a8 DSH |
152 | #ifdef OPENSSL_NO_EC2M |
153 | { | |
154 | ECerr(EC_F_EC_POINT_POINT2OCT, EC_R_GF2M_NOT_SUPPORTED); | |
155 | return 0; | |
156 | } | |
157 | #else | |
84b08eee DSH |
158 | return ec_GF2m_simple_point2oct(group, point, |
159 | form, buf, len, ctx); | |
1acc24a8 | 160 | #endif |
84b08eee DSH |
161 | } |
162 | ||
163 | return group->meth->point2oct(group, point, form, buf, len, ctx); | |
164 | } | |
165 | ||
166 | ||
167 | int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point, | |
168 | const unsigned char *buf, size_t len, BN_CTX *ctx) | |
169 | { | |
170 | if (group->meth->oct2point == 0 | |
171 | && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) | |
172 | { | |
173 | ECerr(EC_F_EC_POINT_OCT2POINT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
174 | return 0; | |
175 | } | |
176 | if (group->meth != point->meth) | |
177 | { | |
178 | ECerr(EC_F_EC_POINT_OCT2POINT, EC_R_INCOMPATIBLE_OBJECTS); | |
179 | return 0; | |
180 | } | |
181 | if(group->meth->flags & EC_FLAGS_DEFAULT_OCT) | |
182 | { | |
183 | if (group->meth->field_type == NID_X9_62_prime_field) | |
184 | return ec_GFp_simple_oct2point(group, point, | |
185 | buf, len, ctx); | |
186 | else | |
1acc24a8 DSH |
187 | #ifdef OPENSSL_NO_EC2M |
188 | { | |
189 | ECerr(EC_F_EC_POINT_OCT2POINT, EC_R_GF2M_NOT_SUPPORTED); | |
190 | return 0; | |
191 | } | |
192 | #else | |
84b08eee DSH |
193 | return ec_GF2m_simple_oct2point(group, point, |
194 | buf, len, ctx); | |
1acc24a8 | 195 | #endif |
84b08eee DSH |
196 | } |
197 | return group->meth->oct2point(group, point, buf, len, ctx); | |
198 | } | |
199 |