e74bd29053
Quite a few adaptations are needed, most prominently the added code to allow provider based MACs. As part of this, all the old information functions are gone, except for EVP_MAC_name(). Some of them will reappear later, for example EVP_MAC_do_all() in some form. MACs by EVP_PKEY was particularly difficult to deal with, as they need to allocate and deallocate EVP_MAC_CTXs "under the hood", and thereby implicitly fetch the corresponding EVP_MAC. This means that EVP_MACs can't be constant in a EVP_MAC_CTX, as their reference count may need to be incremented and decremented as part of the allocation or deallocation of the EVP_MAC_CTX. It may be that other provider based EVP operation types may need to be handled in a similar manner. Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from https://github.com/openssl/openssl/pull/8877)
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/*
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* Copyright 2010-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/evp.h>
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#include "internal/asn1_int.h"
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/*
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* CMAC "ASN1" method. This is just here to indicate the maximum CMAC output
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* length and to free up a CMAC key.
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*/
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static int cmac_size(const EVP_PKEY *pkey)
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{
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return EVP_MAX_BLOCK_LENGTH;
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}
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static void cmac_key_free(EVP_PKEY *pkey)
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{
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EVP_MAC_CTX *cmctx = EVP_PKEY_get0(pkey);
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EVP_MAC *mac = cmctx == NULL ? NULL : EVP_MAC_CTX_mac(cmctx);
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EVP_MAC_CTX_free(cmctx);
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EVP_MAC_free(mac);
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}
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const EVP_PKEY_ASN1_METHOD cmac_asn1_meth = {
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EVP_PKEY_CMAC,
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EVP_PKEY_CMAC,
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0,
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"CMAC",
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"OpenSSL CMAC method",
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0, 0, 0, 0,
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0, 0, 0,
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cmac_size,
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0, 0,
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0, 0, 0, 0, 0, 0, 0,
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cmac_key_free,
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0,
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0, 0
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};
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