2 * Copyright 2007-2017 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
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
11 #include "internal/cryptlib.h"
12 #include <openssl/evp.h>
13 #include "internal/asn1_int.h"
14 #include "internal/siphash.h"
15 #include "siphash_local.h"
18 * SIPHASH "ASN1" method. This is just here to indicate the maximum
19 * SIPHASH output length and to free up a SIPHASH key.
22 static int siphash_size(const EVP_PKEY *pkey)
24 return SIPHASH_MAX_DIGEST_SIZE;
27 static void siphash_key_free(EVP_PKEY *pkey)
29 ASN1_OCTET_STRING *os = EVP_PKEY_get0(pkey);
33 OPENSSL_cleanse(os->data, os->length);
34 ASN1_OCTET_STRING_free(os);
38 static int siphash_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
40 /* nothing (including ASN1_PKEY_CTRL_DEFAULT_MD_NID), is supported */
44 static int siphash_pkey_public_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
46 return ASN1_OCTET_STRING_cmp(EVP_PKEY_get0(a), EVP_PKEY_get0(b));
49 const EVP_PKEY_ASN1_METHOD siphash_asn1_meth = {
55 "OpenSSL SIPHASH method",
57 0, 0, siphash_pkey_public_cmp, 0,