2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
61 #include <openssl/objects.h>
63 #include <openssl/evp.h>
64 #include "asn1_locl.h"
67 STACK *app_pkey_methods = NULL;
69 extern EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth;
71 static const EVP_PKEY_METHOD *standard_methods[] =
78 static int pmeth_cmp(const EVP_PKEY_METHOD * const *a,
79 const EVP_PKEY_METHOD * const *b)
81 return ((*a)->pkey_id - (*b)->pkey_id);
84 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type, ENGINE *e)
86 EVP_PKEY_METHOD tmp, *t = &tmp, **ret;
91 idx = sk_find(app_pkey_methods, (char *)&tmp);
93 return (EVP_PKEY_METHOD *)
94 sk_value(app_pkey_methods, idx);
96 ret = (EVP_PKEY_METHOD **) OBJ_bsearch((char *)&t,
97 (char *)standard_methods,
98 sizeof(standard_methods)/sizeof(EVP_PKEY_METHOD *),
99 sizeof(EVP_PKEY_METHOD *),
100 (int (*)(const void *, const void *))pmeth_cmp);
106 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
109 const EVP_PKEY_METHOD *pmeth;
112 if (!pkey || !pkey->ameth)
114 id = pkey->ameth->pkey_id;
116 pmeth = EVP_PKEY_meth_find(id, e);
119 ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
121 ret->operation = EVP_PKEY_OP_UNDEFINED;
125 CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
130 if (pmeth->init(ret) <= 0)
132 EVP_PKEY_CTX_free(ret);
140 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
142 return int_ctx_new(pkey, e, -1);
145 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
147 return int_ctx_new(NULL, e, id);
150 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
152 if (ctx->pmeth && ctx->pmeth->cleanup)
153 ctx->pmeth->cleanup(ctx);
155 EVP_PKEY_free(ctx->pkey);
157 EVP_PKEY_free(ctx->peerkey);
161 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
162 int cmd, int p1, void *p2)
165 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl)
167 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
170 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
173 if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
175 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
179 if ((optype != -1) && !(ctx->operation & optype))
181 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
185 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
188 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
194 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
195 const char *name, const char *value)
197 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str)
199 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
200 EVP_R_COMMAND_NOT_SUPPORTED);
203 if (!strcmp(name, "digest"))
206 if (!value || !(md = EVP_get_digestbyname(value)))
208 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
209 EVP_R_INVALID_DIGEST);
212 return EVP_PKEY_CTX_set_signature_md(ctx, md);
214 return ctx->pmeth->ctrl_str(ctx, name, value);
217 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
222 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
227 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
229 ctx->app_data = data;
232 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
234 return ctx->app_data;