69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
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/*
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* Copyright 2007-2017 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (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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#include "internal/siphash.h"
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#include "siphash_local.h"
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/*
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* SIPHASH "ASN1" method. This is just here to indicate the maximum
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* SIPHASH output length and to free up a SIPHASH key.
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*/
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static int siphash_size(const EVP_PKEY *pkey)
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{
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return SIPHASH_MAX_DIGEST_SIZE;
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}
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static void siphash_key_free(EVP_PKEY *pkey)
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{
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ASN1_OCTET_STRING *os = EVP_PKEY_get0(pkey);
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if (os != NULL) {
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if (os->data != NULL)
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OPENSSL_cleanse(os->data, os->length);
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ASN1_OCTET_STRING_free(os);
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}
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}
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static int siphash_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
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{
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/* nothing (including ASN1_PKEY_CTRL_DEFAULT_MD_NID), is supported */
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return -2;
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}
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static int siphash_pkey_public_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
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{
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return ASN1_OCTET_STRING_cmp(EVP_PKEY_get0(a), EVP_PKEY_get0(b));
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}
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const EVP_PKEY_ASN1_METHOD siphash_asn1_meth = {
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EVP_PKEY_SIPHASH,
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EVP_PKEY_SIPHASH,
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0,
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"SIPHASH",
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"OpenSSL SIPHASH method",
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0, 0, siphash_pkey_public_cmp, 0,
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0, 0, 0,
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siphash_size,
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0, 0,
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0, 0, 0, 0, 0, 0, 0,
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siphash_key_free,
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siphash_pkey_ctrl,
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0, 0
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};
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