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ae5c8664 MC |
1 | /* |
2 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project | |
3 | * 2010. | |
260d08b8 DSH |
4 | */ |
5 | /* ==================================================================== | |
6 | * Copyright (c) 2010 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 | |
ae5c8664 | 13 | * notice, this list of conditions and the following disclaimer. |
260d08b8 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 | * ==================================================================== | |
260d08b8 DSH |
52 | */ |
53 | ||
54 | #include <stdio.h> | |
55 | #include "cryptlib.h" | |
56 | #include <openssl/evp.h> | |
57 | #include <openssl/cmac.h> | |
58 | #include "asn1_locl.h" | |
59 | ||
ae5c8664 MC |
60 | /* |
61 | * CMAC "ASN1" method. This is just here to indicate the maximum CMAC output | |
62 | * length and to free up a CMAC key. | |
260d08b8 DSH |
63 | */ |
64 | ||
65 | static int cmac_size(const EVP_PKEY *pkey) | |
ae5c8664 MC |
66 | { |
67 | return EVP_MAX_BLOCK_LENGTH; | |
68 | } | |
260d08b8 DSH |
69 | |
70 | static void cmac_key_free(EVP_PKEY *pkey) | |
ae5c8664 MC |
71 | { |
72 | CMAC_CTX *cmctx = (CMAC_CTX *)pkey->pkey.ptr; | |
73 | if (cmctx) | |
74 | CMAC_CTX_free(cmctx); | |
75 | } | |
260d08b8 | 76 | |
ae5c8664 MC |
77 | const EVP_PKEY_ASN1_METHOD cmac_asn1_meth = { |
78 | EVP_PKEY_CMAC, | |
79 | EVP_PKEY_CMAC, | |
80 | 0, | |
260d08b8 | 81 | |
ae5c8664 MC |
82 | "CMAC", |
83 | "OpenSSL CMAC method", | |
260d08b8 | 84 | |
ae5c8664 | 85 | 0, 0, 0, 0, |
260d08b8 | 86 | |
ae5c8664 | 87 | 0, 0, 0, |
260d08b8 | 88 | |
ae5c8664 MC |
89 | cmac_size, |
90 | 0, | |
91 | 0, 0, 0, 0, 0, 0, 0, | |
260d08b8 | 92 | |
ae5c8664 MC |
93 | cmac_key_free, |
94 | 0, | |
95 | 0, 0 | |
96 | }; |