OLD | NEW |
| (Empty) |
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 *poi
nt, | |
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_INCOMPA
TIBLE_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 | |
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 | |
97 return ec_GF2m_simple_set_compressed_coordinates( | |
98 group, point, x, y_bit, ctx); | |
99 #endif | |
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 *po
int, | |
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_SHOUL
D_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_INCOMP
ATIBLE_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_co
nversion_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 | |
152 #ifdef OPENSSL_NO_EC2M | |
153 { | |
154 ECerr(EC_F_EC_POINT_POINT2OCT, EC_R_GF2M_NOT_SUPPORTED); | |
155 return 0; | |
156 } | |
157 #else | |
158 return ec_GF2m_simple_point2oct(group, point, | |
159 form, buf, len, ctx); | |
160 #endif | |
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 | |
187 #ifdef OPENSSL_NO_EC2M | |
188 { | |
189 ECerr(EC_F_EC_POINT_OCT2POINT, EC_R_GF2M_NOT_SUPPORTED); | |
190 return 0; | |
191 } | |
192 #else | |
193 return ec_GF2m_simple_oct2point(group, point, | |
194 buf, len, ctx); | |
195 #endif | |
196 } | |
197 return group->meth->oct2point(group, point, buf, len, ctx); | |
198 } | |
199 | |
OLD | NEW |