Line data Source code
1 : /* pmeth_gn.c */
2 : /*
3 : * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4 : * 2006.
5 : */
6 : /* ====================================================================
7 : * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
8 : *
9 : * Redistribution and use in source and binary forms, with or without
10 : * modification, are permitted provided that the following conditions
11 : * are met:
12 : *
13 : * 1. Redistributions of source code must retain the above copyright
14 : * notice, this list of conditions and the following disclaimer.
15 : *
16 : * 2. Redistributions in binary form must reproduce the above copyright
17 : * notice, this list of conditions and the following disclaimer in
18 : * the documentation and/or other materials provided with the
19 : * distribution.
20 : *
21 : * 3. All advertising materials mentioning features or use of this
22 : * software must display the following acknowledgment:
23 : * "This product includes software developed by the OpenSSL Project
24 : * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 : *
26 : * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 : * endorse or promote products derived from this software without
28 : * prior written permission. For written permission, please contact
29 : * licensing@OpenSSL.org.
30 : *
31 : * 5. Products derived from this software may not be called "OpenSSL"
32 : * nor may "OpenSSL" appear in their names without prior written
33 : * permission of the OpenSSL Project.
34 : *
35 : * 6. Redistributions of any form whatsoever must retain the following
36 : * acknowledgment:
37 : * "This product includes software developed by the OpenSSL Project
38 : * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 : *
40 : * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 : * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 : * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 : * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 : * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 : * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 : * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 : * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 : * OF THE POSSIBILITY OF SUCH DAMAGE.
52 : * ====================================================================
53 : *
54 : * This product includes cryptographic software written by Eric Young
55 : * (eay@cryptsoft.com). This product includes software written by Tim
56 : * Hudson (tjh@cryptsoft.com).
57 : *
58 : */
59 :
60 : #include <stdio.h>
61 : #include <stdlib.h>
62 : #include "cryptlib.h"
63 : #include <openssl/objects.h>
64 : #include <openssl/evp.h>
65 : #include <openssl/bn.h>
66 : #include "evp_locl.h"
67 :
68 0 : int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx)
69 : {
70 : int ret;
71 0 : if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen) {
72 0 : EVPerr(EVP_F_EVP_PKEY_PARAMGEN_INIT,
73 : EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
74 0 : return -2;
75 : }
76 0 : ctx->operation = EVP_PKEY_OP_PARAMGEN;
77 0 : if (!ctx->pmeth->paramgen_init)
78 : return 1;
79 0 : ret = ctx->pmeth->paramgen_init(ctx);
80 0 : if (ret <= 0)
81 0 : ctx->operation = EVP_PKEY_OP_UNDEFINED;
82 0 : return ret;
83 : }
84 :
85 0 : int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey)
86 : {
87 : int ret;
88 0 : if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen) {
89 0 : EVPerr(EVP_F_EVP_PKEY_PARAMGEN,
90 : EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
91 0 : return -2;
92 : }
93 :
94 0 : if (ctx->operation != EVP_PKEY_OP_PARAMGEN) {
95 0 : EVPerr(EVP_F_EVP_PKEY_PARAMGEN, EVP_R_OPERATON_NOT_INITIALIZED);
96 0 : return -1;
97 : }
98 :
99 0 : if (!ppkey)
100 : return -1;
101 :
102 0 : if (!*ppkey)
103 0 : *ppkey = EVP_PKEY_new();
104 :
105 0 : ret = ctx->pmeth->paramgen(ctx, *ppkey);
106 0 : if (ret <= 0) {
107 0 : EVP_PKEY_free(*ppkey);
108 0 : *ppkey = NULL;
109 : }
110 0 : return ret;
111 : }
112 :
113 3675 : int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx)
114 : {
115 : int ret;
116 3675 : if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) {
117 0 : EVPerr(EVP_F_EVP_PKEY_KEYGEN_INIT,
118 : EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
119 0 : return -2;
120 : }
121 3675 : ctx->operation = EVP_PKEY_OP_KEYGEN;
122 3675 : if (!ctx->pmeth->keygen_init)
123 : return 1;
124 0 : ret = ctx->pmeth->keygen_init(ctx);
125 0 : if (ret <= 0)
126 0 : ctx->operation = EVP_PKEY_OP_UNDEFINED;
127 0 : return ret;
128 : }
129 :
130 3675 : int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey)
131 : {
132 : int ret;
133 :
134 3675 : if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) {
135 0 : EVPerr(EVP_F_EVP_PKEY_KEYGEN,
136 : EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
137 0 : return -2;
138 : }
139 3675 : if (ctx->operation != EVP_PKEY_OP_KEYGEN) {
140 0 : EVPerr(EVP_F_EVP_PKEY_KEYGEN, EVP_R_OPERATON_NOT_INITIALIZED);
141 0 : return -1;
142 : }
143 :
144 3675 : if (!ppkey)
145 : return -1;
146 :
147 3675 : if (!*ppkey)
148 3675 : *ppkey = EVP_PKEY_new();
149 :
150 3675 : ret = ctx->pmeth->keygen(ctx, *ppkey);
151 3675 : if (ret <= 0) {
152 0 : EVP_PKEY_free(*ppkey);
153 0 : *ppkey = NULL;
154 : }
155 3675 : return ret;
156 : }
157 :
158 0 : void EVP_PKEY_CTX_set_cb(EVP_PKEY_CTX *ctx, EVP_PKEY_gen_cb *cb)
159 : {
160 0 : ctx->pkey_gencb = cb;
161 0 : }
162 :
163 0 : EVP_PKEY_gen_cb *EVP_PKEY_CTX_get_cb(EVP_PKEY_CTX *ctx)
164 : {
165 0 : return ctx->pkey_gencb;
166 : }
167 :
168 : /*
169 : * "translation callback" to call EVP_PKEY_CTX callbacks using BN_GENCB style
170 : * callbacks.
171 : */
172 :
173 0 : static int trans_cb(int a, int b, BN_GENCB *gcb)
174 : {
175 0 : EVP_PKEY_CTX *ctx = gcb->arg;
176 0 : ctx->keygen_info[0] = a;
177 0 : ctx->keygen_info[1] = b;
178 0 : return ctx->pkey_gencb(ctx);
179 : }
180 :
181 0 : void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx)
182 : {
183 0 : BN_GENCB_set(cb, trans_cb, ctx)
184 0 : }
185 :
186 0 : int EVP_PKEY_CTX_get_keygen_info(EVP_PKEY_CTX *ctx, int idx)
187 : {
188 0 : if (idx == -1)
189 0 : return ctx->keygen_info_count;
190 0 : if (idx < 0 || idx > ctx->keygen_info_count)
191 : return 0;
192 0 : return ctx->keygen_info[idx];
193 : }
194 :
195 3675 : EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e,
196 : const unsigned char *key, int keylen)
197 : {
198 : EVP_PKEY_CTX *mac_ctx = NULL;
199 3675 : EVP_PKEY *mac_key = NULL;
200 3675 : mac_ctx = EVP_PKEY_CTX_new_id(type, e);
201 3675 : if (!mac_ctx)
202 : return NULL;
203 3675 : if (EVP_PKEY_keygen_init(mac_ctx) <= 0)
204 : goto merr;
205 3675 : if (EVP_PKEY_CTX_ctrl(mac_ctx, -1, EVP_PKEY_OP_KEYGEN,
206 : EVP_PKEY_CTRL_SET_MAC_KEY,
207 : keylen, (void *)key) <= 0)
208 : goto merr;
209 3675 : if (EVP_PKEY_keygen(mac_ctx, &mac_key) <= 0)
210 : goto merr;
211 : merr:
212 3675 : if (mac_ctx)
213 3675 : EVP_PKEY_CTX_free(mac_ctx);
214 3675 : return mac_key;
215 : }
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