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/poly1305.h"
15 #include "poly1305_local.h"
18 * POLY1305 "ASN1" method. This is just here to indicate the maximum
19 * POLY1305 output length and to free up a POLY1305 key.
22 static int poly1305_size(const EVP_PKEY *pkey)
24 return POLY1305_DIGEST_SIZE;
27 static void poly1305_key_free(EVP_PKEY *pkey)
29 ASN1_OCTET_STRING *os = EVP_PKEY_get0(pkey);
32 OPENSSL_cleanse(os->data, os->length);
33 ASN1_OCTET_STRING_free(os);
37 static int poly1305_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
39 /* nothing, (including ASN1_PKEY_CTRL_DEFAULT_MD_NID), is supported */
43 static int poly1305_pkey_public_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
45 return ASN1_OCTET_STRING_cmp(EVP_PKEY_get0(a), EVP_PKEY_get0(b));
48 const EVP_PKEY_ASN1_METHOD poly1305_asn1_meth = {
54 "OpenSSL POLY1305 method",
56 0, 0, poly1305_pkey_public_cmp, 0,