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Commit | Line | Data |
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0f113f3e | 1 | /* |
33388b44 | 2 | * Copyright 2010-2020 The OpenSSL Project Authors. All Rights Reserved. |
c8ef656d | 3 | * |
8de396f8 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
4f22f405 RS |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
c8ef656d DSH |
8 | */ |
9 | ||
a6d572e6 P |
10 | /* |
11 | * CMAC low level APIs are deprecated for public use, but still ok for internal | |
12 | * use. | |
13 | */ | |
14 | #include "internal/deprecated.h" | |
15 | ||
c8ef656d | 16 | #include <stdio.h> |
b39fc560 | 17 | #include "internal/cryptlib.h" |
c8ef656d | 18 | #include <openssl/evp.h> |
25f2138b | 19 | #include "crypto/asn1.h" |
c8ef656d | 20 | |
0f113f3e MC |
21 | /* |
22 | * CMAC "ASN1" method. This is just here to indicate the maximum CMAC output | |
23 | * length and to free up a CMAC key. | |
c8ef656d DSH |
24 | */ |
25 | ||
26 | static int cmac_size(const EVP_PKEY *pkey) | |
0f113f3e MC |
27 | { |
28 | return EVP_MAX_BLOCK_LENGTH; | |
29 | } | |
c8ef656d DSH |
30 | |
31 | static void cmac_key_free(EVP_PKEY *pkey) | |
0f113f3e | 32 | { |
b8d77c9b | 33 | EVP_MAC_CTX *cmctx = EVP_PKEY_get0(pkey); |
865adf97 | 34 | EVP_MAC *mac = cmctx == NULL ? NULL : EVP_MAC_CTX_mac(cmctx); |
e74bd290 | 35 | |
865adf97 | 36 | EVP_MAC_CTX_free(cmctx); |
e74bd290 | 37 | EVP_MAC_free(mac); |
0f113f3e | 38 | } |
c8ef656d | 39 | |
0f113f3e MC |
40 | const EVP_PKEY_ASN1_METHOD cmac_asn1_meth = { |
41 | EVP_PKEY_CMAC, | |
42 | EVP_PKEY_CMAC, | |
43 | 0, | |
c8ef656d | 44 | |
0f113f3e MC |
45 | "CMAC", |
46 | "OpenSSL CMAC method", | |
c8ef656d | 47 | |
0f113f3e | 48 | 0, 0, 0, 0, |
c8ef656d | 49 | |
0f113f3e | 50 | 0, 0, 0, |
c8ef656d | 51 | |
0f113f3e MC |
52 | cmac_size, |
53 | 0, 0, | |
54 | 0, 0, 0, 0, 0, 0, 0, | |
c8ef656d | 55 | |
0f113f3e MC |
56 | cmac_key_free, |
57 | 0, | |
58 | 0, 0 | |
59 | }; |