mirror of
https://github.com/openssl/openssl.git
synced 2024-12-15 06:01:37 +08:00
b0edda11cb
Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/5689)
102 lines
2.1 KiB
C
102 lines
2.1 KiB
C
/*
|
|
* Copyright 2007-2018 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the OpenSSL license (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "internal/cryptlib.h"
|
|
#include <openssl/evp.h>
|
|
#include "internal/asn1_int.h"
|
|
#include "internal/poly1305.h"
|
|
#include "poly1305_local.h"
|
|
#include "internal/evp_int.h"
|
|
|
|
/*
|
|
* POLY1305 "ASN1" method. This is just here to indicate the maximum
|
|
* POLY1305 output length and to free up a POLY1305 key.
|
|
*/
|
|
|
|
static int poly1305_size(const EVP_PKEY *pkey)
|
|
{
|
|
return POLY1305_DIGEST_SIZE;
|
|
}
|
|
|
|
static void poly1305_key_free(EVP_PKEY *pkey)
|
|
{
|
|
ASN1_OCTET_STRING *os = EVP_PKEY_get0(pkey);
|
|
if (os != NULL) {
|
|
if (os->data != NULL)
|
|
OPENSSL_cleanse(os->data, os->length);
|
|
ASN1_OCTET_STRING_free(os);
|
|
}
|
|
}
|
|
|
|
static int poly1305_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
|
|
{
|
|
/* nothing, (including ASN1_PKEY_CTRL_DEFAULT_MD_NID), is supported */
|
|
return -2;
|
|
}
|
|
|
|
static int poly1305_pkey_public_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
|
|
{
|
|
return ASN1_OCTET_STRING_cmp(EVP_PKEY_get0(a), EVP_PKEY_get0(b));
|
|
}
|
|
|
|
static int poly1305_set_priv_key(EVP_PKEY *pkey, const unsigned char *priv,
|
|
size_t len)
|
|
{
|
|
ASN1_OCTET_STRING *os;
|
|
|
|
if (pkey->pkey.ptr != NULL || len != POLY1305_KEY_SIZE)
|
|
return 0;
|
|
|
|
os = ASN1_OCTET_STRING_new();
|
|
if (os == NULL)
|
|
return 0;
|
|
|
|
if (!ASN1_OCTET_STRING_set(os, priv, len)) {
|
|
ASN1_OCTET_STRING_free(os);
|
|
return 0;
|
|
}
|
|
|
|
pkey->pkey.ptr = os;
|
|
return 1;
|
|
}
|
|
|
|
const EVP_PKEY_ASN1_METHOD poly1305_asn1_meth = {
|
|
EVP_PKEY_POLY1305,
|
|
EVP_PKEY_POLY1305,
|
|
0,
|
|
|
|
"POLY1305",
|
|
"OpenSSL POLY1305 method",
|
|
|
|
0, 0, poly1305_pkey_public_cmp, 0,
|
|
|
|
0, 0, 0,
|
|
|
|
poly1305_size,
|
|
0, 0,
|
|
0, 0, 0, 0, 0, 0, 0,
|
|
|
|
poly1305_key_free,
|
|
poly1305_pkey_ctrl,
|
|
NULL,
|
|
NULL,
|
|
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
|
|
poly1305_set_priv_key,
|
|
NULL,
|
|
};
|