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0f113f3e MC |
1 | /* |
2 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project | |
3 | * 2006. | |
f5cda4cb DSH |
4 | */ |
5 | /* ==================================================================== | |
6 | * Copyright (c) 2006 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 | |
0f113f3e | 13 | * notice, this list of conditions and the following disclaimer. |
f5cda4cb DSH |
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 | * licensing@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 | #include <stdio.h> | |
60 | #include <stdlib.h> | |
b39fc560 | 61 | #include "internal/cryptlib.h" |
c20276e4 | 62 | #include <openssl/objects.h> |
f5cda4cb | 63 | #include <openssl/evp.h> |
68c29f61 | 64 | #include "internal/bn_int.h" |
27af42f9 | 65 | #include "internal/evp_int.h" |
f5cda4cb DSH |
66 | |
67 | int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx) | |
0f113f3e MC |
68 | { |
69 | int ret; | |
70 | if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen) { | |
71 | EVPerr(EVP_F_EVP_PKEY_PARAMGEN_INIT, | |
72 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
73 | return -2; | |
74 | } | |
75 | ctx->operation = EVP_PKEY_OP_PARAMGEN; | |
76 | if (!ctx->pmeth->paramgen_init) | |
77 | return 1; | |
78 | ret = ctx->pmeth->paramgen_init(ctx); | |
79 | if (ret <= 0) | |
80 | ctx->operation = EVP_PKEY_OP_UNDEFINED; | |
81 | return ret; | |
82 | } | |
f5cda4cb DSH |
83 | |
84 | int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey) | |
0f113f3e MC |
85 | { |
86 | int ret; | |
87 | if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen) { | |
88 | EVPerr(EVP_F_EVP_PKEY_PARAMGEN, | |
89 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
90 | return -2; | |
91 | } | |
92 | ||
93 | if (ctx->operation != EVP_PKEY_OP_PARAMGEN) { | |
94 | EVPerr(EVP_F_EVP_PKEY_PARAMGEN, EVP_R_OPERATON_NOT_INITIALIZED); | |
95 | return -1; | |
96 | } | |
97 | ||
e34c66c6 | 98 | if (ppkey == NULL) |
0f113f3e MC |
99 | return -1; |
100 | ||
e34c66c6 | 101 | if (*ppkey == NULL) |
0f113f3e MC |
102 | *ppkey = EVP_PKEY_new(); |
103 | ||
e34c66c6 EK |
104 | if (*ppkey == NULL) { |
105 | EVPerr(EVP_F_EVP_PKEY_PARAMGEN, ERR_R_MALLOC_FAILURE); | |
106 | return -1; | |
107 | } | |
108 | ||
0f113f3e MC |
109 | ret = ctx->pmeth->paramgen(ctx, *ppkey); |
110 | if (ret <= 0) { | |
111 | EVP_PKEY_free(*ppkey); | |
112 | *ppkey = NULL; | |
113 | } | |
114 | return ret; | |
115 | } | |
f5cda4cb DSH |
116 | |
117 | int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx) | |
0f113f3e MC |
118 | { |
119 | int ret; | |
120 | if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) { | |
121 | EVPerr(EVP_F_EVP_PKEY_KEYGEN_INIT, | |
122 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
123 | return -2; | |
124 | } | |
125 | ctx->operation = EVP_PKEY_OP_KEYGEN; | |
126 | if (!ctx->pmeth->keygen_init) | |
127 | return 1; | |
128 | ret = ctx->pmeth->keygen_init(ctx); | |
129 | if (ret <= 0) | |
130 | ctx->operation = EVP_PKEY_OP_UNDEFINED; | |
131 | return ret; | |
132 | } | |
f5cda4cb DSH |
133 | |
134 | int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey) | |
0f113f3e MC |
135 | { |
136 | int ret; | |
137 | ||
138 | if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) { | |
139 | EVPerr(EVP_F_EVP_PKEY_KEYGEN, | |
140 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
141 | return -2; | |
142 | } | |
143 | if (ctx->operation != EVP_PKEY_OP_KEYGEN) { | |
144 | EVPerr(EVP_F_EVP_PKEY_KEYGEN, EVP_R_OPERATON_NOT_INITIALIZED); | |
145 | return -1; | |
146 | } | |
147 | ||
90945fa3 | 148 | if (ppkey == NULL) |
0f113f3e MC |
149 | return -1; |
150 | ||
90945fa3 | 151 | if (*ppkey == NULL) |
0f113f3e | 152 | *ppkey = EVP_PKEY_new(); |
90945fa3 MC |
153 | if (*ppkey == NULL) |
154 | return -1; | |
0f113f3e MC |
155 | |
156 | ret = ctx->pmeth->keygen(ctx, *ppkey); | |
157 | if (ret <= 0) { | |
158 | EVP_PKEY_free(*ppkey); | |
159 | *ppkey = NULL; | |
160 | } | |
161 | return ret; | |
162 | } | |
f5cda4cb DSH |
163 | |
164 | void EVP_PKEY_CTX_set_cb(EVP_PKEY_CTX *ctx, EVP_PKEY_gen_cb *cb) | |
0f113f3e MC |
165 | { |
166 | ctx->pkey_gencb = cb; | |
167 | } | |
f5cda4cb | 168 | |
b28dea4e | 169 | EVP_PKEY_gen_cb *EVP_PKEY_CTX_get_cb(EVP_PKEY_CTX *ctx) |
0f113f3e MC |
170 | { |
171 | return ctx->pkey_gencb; | |
172 | } | |
b28dea4e | 173 | |
0f113f3e MC |
174 | /* |
175 | * "translation callback" to call EVP_PKEY_CTX callbacks using BN_GENCB style | |
176 | * callbacks. | |
f5cda4cb DSH |
177 | */ |
178 | ||
179 | static int trans_cb(int a, int b, BN_GENCB *gcb) | |
0f113f3e MC |
180 | { |
181 | EVP_PKEY_CTX *ctx = BN_GENCB_get_arg(gcb); | |
182 | ctx->keygen_info[0] = a; | |
183 | ctx->keygen_info[1] = b; | |
184 | return ctx->pkey_gencb(ctx); | |
185 | } | |
f5cda4cb DSH |
186 | |
187 | void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx) | |
0f113f3e MC |
188 | { |
189 | BN_GENCB_set(cb, trans_cb, ctx); | |
190 | } | |
f5cda4cb DSH |
191 | |
192 | int EVP_PKEY_CTX_get_keygen_info(EVP_PKEY_CTX *ctx, int idx) | |
0f113f3e MC |
193 | { |
194 | if (idx == -1) | |
195 | return ctx->keygen_info_count; | |
196 | if (idx < 0 || idx > ctx->keygen_info_count) | |
197 | return 0; | |
198 | return ctx->keygen_info[idx]; | |
199 | } | |
2022cfe0 DSH |
200 | |
201 | EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e, | |
0f113f3e MC |
202 | const unsigned char *key, int keylen) |
203 | { | |
204 | EVP_PKEY_CTX *mac_ctx = NULL; | |
205 | EVP_PKEY *mac_key = NULL; | |
206 | mac_ctx = EVP_PKEY_CTX_new_id(type, e); | |
207 | if (!mac_ctx) | |
208 | return NULL; | |
209 | if (EVP_PKEY_keygen_init(mac_ctx) <= 0) | |
210 | goto merr; | |
eff1a4d2 | 211 | if (EVP_PKEY_CTX_set_mac_key(mac_ctx, key, keylen) <= 0) |
0f113f3e MC |
212 | goto merr; |
213 | if (EVP_PKEY_keygen(mac_ctx, &mac_key) <= 0) | |
214 | goto merr; | |
215 | merr: | |
c5ba2d99 | 216 | EVP_PKEY_CTX_free(mac_ctx); |
0f113f3e MC |
217 | return mac_key; |
218 | } |