2 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
5 /* ====================================================================
6 * Copyright (c) 2010 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 * ====================================================================
55 #include "internal/cryptlib.h"
56 #include <openssl/x509.h>
57 #include <openssl/x509v3.h>
58 #include <openssl/evp.h>
59 #include <openssl/cmac.h>
60 #include "internal/evp_int.h"
62 /* The context structure and "key" is simply a CMAC_CTX */
64 static int pkey_cmac_init(EVP_PKEY_CTX *ctx)
66 ctx->data = CMAC_CTX_new();
69 ctx->keygen_info_count = 0;
73 static int pkey_cmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
75 if (!pkey_cmac_init(dst))
77 if (!CMAC_CTX_copy(dst->data, src->data))
82 static void pkey_cmac_cleanup(EVP_PKEY_CTX *ctx)
84 CMAC_CTX_free(ctx->data);
87 static int pkey_cmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
89 CMAC_CTX *cmkey = CMAC_CTX_new();
90 CMAC_CTX *cmctx = ctx->data;
93 if (!CMAC_CTX_copy(cmkey, cmctx)) {
97 EVP_PKEY_assign(pkey, EVP_PKEY_CMAC, cmkey);
102 static int int_update(EVP_MD_CTX *ctx, const void *data, size_t count)
104 if (!CMAC_Update(ctx->pctx->data, data, count))
109 static int cmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
111 EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
112 mctx->update = int_update;
116 static int cmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
119 return CMAC_Final(ctx->data, sig, siglen);
122 static int pkey_cmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
124 CMAC_CTX *cmctx = ctx->data;
127 case EVP_PKEY_CTRL_SET_MAC_KEY:
130 if (!CMAC_Init(cmctx, p2, p1, NULL, NULL))
134 case EVP_PKEY_CTRL_CIPHER:
135 if (!CMAC_Init(cmctx, NULL, 0, p2, ctx->engine))
139 case EVP_PKEY_CTRL_MD:
140 if (ctx->pkey && !CMAC_CTX_copy(ctx->data,
141 (CMAC_CTX *)ctx->pkey->pkey.ptr))
143 if (!CMAC_Init(cmctx, NULL, 0, NULL, NULL))
154 static int pkey_cmac_ctrl_str(EVP_PKEY_CTX *ctx,
155 const char *type, const char *value)
160 if (strcmp(type, "key") == 0) {
161 void *p = (void *)value;
162 return pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, strlen(p), p);
164 if (strcmp(type, "cipher") == 0) {
166 c = EVP_get_cipherbyname(value);
169 return pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_CIPHER, -1, (void *)c);
171 if (strcmp(type, "hexkey") == 0) {
175 key = string_to_hex(value, &keylen);
178 r = pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
185 const EVP_PKEY_METHOD cmac_pkey_meth = {
187 EVP_PKEY_FLAG_SIGCTX_CUSTOM,