You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
272 lines
6.5 KiB
C
272 lines
6.5 KiB
C
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
|
* project 2007.
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 2007 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this
|
|
* software must display the following acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* licensing@OpenSSL.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
* ====================================================================
|
|
*
|
|
* This product includes cryptographic software written by Eric Young
|
|
* (eay@cryptsoft.com). This product includes software written by Tim
|
|
* Hudson (tjh@cryptsoft.com).
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "cryptlib.h"
|
|
#include <openssl/x509.h>
|
|
#include <openssl/x509v3.h>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/hmac.h>
|
|
#include "evp_locl.h"
|
|
|
|
/* HMAC pkey context structure */
|
|
|
|
typedef struct
|
|
{
|
|
const EVP_MD *md; /* MD for HMAC use */
|
|
ASN1_OCTET_STRING ktmp; /* Temp storage for key */
|
|
HMAC_CTX ctx;
|
|
} HMAC_PKEY_CTX;
|
|
|
|
static int pkey_hmac_init(EVP_PKEY_CTX *ctx)
|
|
{
|
|
HMAC_PKEY_CTX *hctx;
|
|
hctx = OPENSSL_malloc(sizeof(HMAC_PKEY_CTX));
|
|
if (!hctx)
|
|
return 0;
|
|
hctx->md = NULL;
|
|
hctx->ktmp.data = NULL;
|
|
hctx->ktmp.length = 0;
|
|
hctx->ktmp.flags = 0;
|
|
hctx->ktmp.type = V_ASN1_OCTET_STRING;
|
|
HMAC_CTX_init(&hctx->ctx);
|
|
|
|
ctx->data = hctx;
|
|
ctx->keygen_info_count = 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int pkey_hmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
|
|
{
|
|
HMAC_PKEY_CTX *sctx, *dctx;
|
|
if (!pkey_hmac_init(dst))
|
|
return 0;
|
|
sctx = src->data;
|
|
dctx = dst->data;
|
|
dctx->md = sctx->md;
|
|
HMAC_CTX_init(&dctx->ctx);
|
|
if (!HMAC_CTX_copy(&dctx->ctx, &sctx->ctx))
|
|
return 0;
|
|
if (sctx->ktmp.data)
|
|
{
|
|
if (!ASN1_OCTET_STRING_set(&dctx->ktmp,
|
|
sctx->ktmp.data, sctx->ktmp.length))
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void pkey_hmac_cleanup(EVP_PKEY_CTX *ctx)
|
|
{
|
|
HMAC_PKEY_CTX *hctx = ctx->data;
|
|
HMAC_CTX_cleanup(&hctx->ctx);
|
|
if (hctx->ktmp.data)
|
|
{
|
|
if (hctx->ktmp.length)
|
|
OPENSSL_cleanse(hctx->ktmp.data, hctx->ktmp.length);
|
|
OPENSSL_free(hctx->ktmp.data);
|
|
hctx->ktmp.data = NULL;
|
|
}
|
|
OPENSSL_free(hctx);
|
|
}
|
|
|
|
static int pkey_hmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
|
|
{
|
|
ASN1_OCTET_STRING *hkey = NULL;
|
|
HMAC_PKEY_CTX *hctx = ctx->data;
|
|
if (!hctx->ktmp.data)
|
|
return 0;
|
|
hkey = ASN1_OCTET_STRING_dup(&hctx->ktmp);
|
|
if (!hkey)
|
|
return 0;
|
|
EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, hkey);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int int_update(EVP_MD_CTX *ctx,const void *data,size_t count)
|
|
{
|
|
HMAC_PKEY_CTX *hctx = ctx->pctx->data;
|
|
if (!HMAC_Update(&hctx->ctx, data, count))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static int hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
|
|
{
|
|
HMAC_PKEY_CTX *hctx = ctx->data;
|
|
HMAC_CTX_set_flags(&hctx->ctx, mctx->flags & ~EVP_MD_CTX_FLAG_NO_INIT);
|
|
EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
|
|
mctx->update = int_update;
|
|
return 1;
|
|
}
|
|
|
|
static int hmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
|
|
EVP_MD_CTX *mctx)
|
|
{
|
|
unsigned int hlen;
|
|
HMAC_PKEY_CTX *hctx = ctx->data;
|
|
int l = EVP_MD_CTX_size(mctx);
|
|
|
|
if (l < 0)
|
|
return 0;
|
|
*siglen = l;
|
|
if (!sig)
|
|
return 1;
|
|
|
|
if (!HMAC_Final(&hctx->ctx, sig, &hlen))
|
|
return 0;
|
|
*siglen = (size_t)hlen;
|
|
return 1;
|
|
}
|
|
|
|
static int pkey_hmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
|
|
{
|
|
HMAC_PKEY_CTX *hctx = ctx->data;
|
|
ASN1_OCTET_STRING *key;
|
|
switch (type)
|
|
{
|
|
|
|
case EVP_PKEY_CTRL_SET_MAC_KEY:
|
|
if ((!p2 && p1 > 0) || (p1 < -1))
|
|
return 0;
|
|
if (!ASN1_OCTET_STRING_set(&hctx->ktmp, p2, p1))
|
|
return 0;
|
|
break;
|
|
|
|
case EVP_PKEY_CTRL_MD:
|
|
hctx->md = p2;
|
|
break;
|
|
|
|
case EVP_PKEY_CTRL_DIGESTINIT:
|
|
key = (ASN1_OCTET_STRING *)ctx->pkey->pkey.ptr;
|
|
if (!HMAC_Init_ex(&hctx->ctx, key->data, key->length, hctx->md,
|
|
ctx->engine))
|
|
return 0;
|
|
break;
|
|
|
|
default:
|
|
return -2;
|
|
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int pkey_hmac_ctrl_str(EVP_PKEY_CTX *ctx,
|
|
const char *type, const char *value)
|
|
{
|
|
if (!value)
|
|
{
|
|
return 0;
|
|
}
|
|
if (!strcmp(type, "key"))
|
|
{
|
|
void *p = (void *)value;
|
|
return pkey_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
|
|
-1, p);
|
|
}
|
|
if (!strcmp(type, "hexkey"))
|
|
{
|
|
unsigned char *key;
|
|
int r;
|
|
long keylen;
|
|
key = string_to_hex(value, &keylen);
|
|
if (!key)
|
|
return 0;
|
|
r = pkey_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
|
|
OPENSSL_free(key);
|
|
return r;
|
|
}
|
|
return -2;
|
|
}
|
|
|
|
const EVP_PKEY_METHOD hmac_pkey_meth =
|
|
{
|
|
EVP_PKEY_HMAC,
|
|
0,
|
|
pkey_hmac_init,
|
|
pkey_hmac_copy,
|
|
pkey_hmac_cleanup,
|
|
|
|
0, 0,
|
|
|
|
0,
|
|
pkey_hmac_keygen,
|
|
|
|
0, 0,
|
|
|
|
0, 0,
|
|
|
|
0,0,
|
|
|
|
hmac_signctx_init,
|
|
hmac_signctx,
|
|
|
|
0,0,
|
|
|
|
0,0,
|
|
|
|
0,0,
|
|
|
|
0,0,
|
|
|
|
pkey_hmac_ctrl,
|
|
pkey_hmac_ctrl_str
|
|
|
|
};
|