mirror of
https://github.com/guanzhi/GmSSL.git
synced 2026-05-31 06:53:58 +08:00
add CBC-MAC and GM OTP, not tested
This commit is contained in:
Zhi Guan
@@ -17,8 +17,8 @@ TEST=
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APPS=
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LIB=$(TOP)/libcrypto.a
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LIBSRC=cbcmac.c cbcmac_ameth.c cbcmac_pmeth.c
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LIBOBJ=cbcmac.o cbcmac_ameth.o cbcmac_pmeth.o
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LIBSRC=cbcmac.c cbcm_ameth.c cbcm_pmeth.c
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LIBOBJ=cbcmac.o cbcm_ameth.o cbcm_pmeth.o
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SRC= $(LIBSRC)
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142
crypto/cbcmac/cbcm_ameth.c
Normal file
142
crypto/cbcmac/cbcm_ameth.c
Normal file
@@ -0,0 +1,142 @@
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/* crypto/cbcmac/cbcm_ameth.c */
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||||
/* ====================================================================
|
||||
* Copyright (c) 2015-2016 The GmSSL 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 GmSSL Project.
|
||||
* (http://gmssl.org/)"
|
||||
*
|
||||
* 4. The name "GmSSL Project" must not be used to endorse or promote
|
||||
* products derived from this software without prior written
|
||||
* permission. For written permission, please contact
|
||||
* guanzhi1980@gmail.com.
|
||||
*
|
||||
* 5. Products derived from this software may not be called "GmSSL"
|
||||
* nor may "GmSSL" appear in their names without prior written
|
||||
* permission of the GmSSL Project.
|
||||
*
|
||||
* 6. Redistributions of any form whatsoever must retain the following
|
||||
* acknowledgment:
|
||||
* "This product includes software developed by the GmSSL Project
|
||||
* (http://gmssl.org/)"
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE GmSSL 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 GmSSL 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.
|
||||
* ====================================================================
|
||||
*
|
||||
*/
|
||||
/*
|
||||
* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
|
||||
* 2010.
|
||||
*/
|
||||
/* ====================================================================
|
||||
* Copyright (c) 2010 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.
|
||||
* ====================================================================
|
||||
*/
|
||||
|
||||
#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/evp.h>
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#include <openssl/cbcmac.h>
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#include "asn1_locl.h"
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||||
|
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static int cbcmac_size(const EVP_PKEY *pkey)
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{
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return EVP_MAX_BLOCK_LENGTH;
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}
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static void cbcmac_key_free(EVP_PKEY *pkey)
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{
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CBCMAC_CTX *cmctx = (CBCMAC_CTX *)pkey->pkey.ptr;
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if (cmctx)
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CBCMAC_CTX_free(cmctx);
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}
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||||
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const EVP_PKEY_ASN1_METHOD cbcmac_asn1_meth = {
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EVP_PKEY_CBCMAC,
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EVP_PKEY_CBCMAC,
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0,
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||||
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"CBCMAC",
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||||
"GmSSL CBCMAC method",
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0, 0, 0, 0,
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0, 0, 0,
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||||
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||||
cbcmac_size,
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0,
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||||
0, 0, 0, 0, 0, 0, 0,
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cbcmac_key_free,
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0,
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0, 0
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};
|
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264
crypto/cbcmac/cbcm_pmeth.c
Normal file
264
crypto/cbcmac/cbcm_pmeth.c
Normal file
@@ -0,0 +1,264 @@
|
||||
/* crypto/cbcmac/cbcm_pmeth.c */
|
||||
/* ====================================================================
|
||||
* Copyright (c) 2015-2016 The GmSSL 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 GmSSL Project.
|
||||
* (http://gmssl.org/)"
|
||||
*
|
||||
* 4. The name "GmSSL Project" must not be used to endorse or promote
|
||||
* products derived from this software without prior written
|
||||
* permission. For written permission, please contact
|
||||
* guanzhi1980@gmail.com.
|
||||
*
|
||||
* 5. Products derived from this software may not be called "GmSSL"
|
||||
* nor may "GmSSL" appear in their names without prior written
|
||||
* permission of the GmSSL Project.
|
||||
*
|
||||
* 6. Redistributions of any form whatsoever must retain the following
|
||||
* acknowledgment:
|
||||
* "This product includes software developed by the GmSSL Project
|
||||
* (http://gmssl.org/)"
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE GmSSL 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 GmSSL 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.
|
||||
* ====================================================================
|
||||
*
|
||||
*/
|
||||
/*
|
||||
* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
|
||||
* 2010.
|
||||
*/
|
||||
/* ====================================================================
|
||||
* Copyright (c) 2010 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.
|
||||
* ====================================================================
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
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#include "cryptlib.h"
|
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
|
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#include <openssl/evp.h>
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#include <openssl/cbcmac.h>
|
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#include "evp_locl.h"
|
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|
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static int pkey_cbcmac_init(EVP_PKEY_CTX *ctx)
|
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{
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ctx->data = CBCMAC_CTX_new();
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if (!ctx->data)
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return 0;
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ctx->keygen_info_count = 0;
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return 1;
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}
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static int pkey_cbcmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
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{
|
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if (!pkey_cbcmac_init(dst))
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return 0;
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||||
if (!CBCMAC_CTX_copy(dst->data, src->data))
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||||
return 0;
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||||
return 1;
|
||||
}
|
||||
|
||||
static void pkey_cbcmac_cleanup(EVP_PKEY_CTX *ctx)
|
||||
{
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||||
CBCMAC_CTX_free(ctx->data);
|
||||
}
|
||||
|
||||
static int pkey_cbcmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
|
||||
{
|
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CBCMAC_CTX *cmkey = CBCMAC_CTX_new();
|
||||
CBCMAC_CTX *cmctx = ctx->data;
|
||||
if (!cmkey)
|
||||
return 0;
|
||||
if (!CBCMAC_CTX_copy(cmkey, cmctx)) {
|
||||
CBCMAC_CTX_free(cmkey);
|
||||
return 0;
|
||||
}
|
||||
EVP_PKEY_assign(pkey, EVP_PKEY_CBCMAC, cmkey);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int int_update(EVP_MD_CTX *ctx, const void *data, size_t count)
|
||||
{
|
||||
if (!CBCMAC_Update(ctx->pctx->data, data, count))
|
||||
return 0;
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int cbcmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
|
||||
{
|
||||
EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
|
||||
mctx->update = int_update;
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int cbcmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
|
||||
EVP_MD_CTX *mctx)
|
||||
{
|
||||
return CBCMAC_Final(ctx->data, sig, siglen);
|
||||
}
|
||||
|
||||
static int pkey_cbcmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
|
||||
{
|
||||
CBCMAC_CTX *cmctx = ctx->data;
|
||||
switch (type) {
|
||||
|
||||
case EVP_PKEY_CTRL_SET_MAC_KEY:
|
||||
if (!p2 || p1 < 0)
|
||||
return 0;
|
||||
if (!CMAC_Init(cmctx, p2, p1, NULL, NULL))
|
||||
return 0;
|
||||
break;
|
||||
|
||||
case EVP_PKEY_CTRL_CIPHER:
|
||||
if (!CBCMAC_Init(cmctx, NULL, 0, p2, ctx->engine))
|
||||
return 0;
|
||||
break;
|
||||
|
||||
case EVP_PKEY_CTRL_MD:
|
||||
if (ctx->pkey && !CBCMAC_CTX_copy(ctx->data,
|
||||
(CBCMAC_CTX *)ctx->pkey->pkey.ptr))
|
||||
return 0;
|
||||
if (!CBCMAC_Init(cmctx, NULL, 0, NULL, NULL))
|
||||
return 0;
|
||||
break;
|
||||
|
||||
default:
|
||||
return -2;
|
||||
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int pkey_cbcmac_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_cbcmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, strlen(p), p);
|
||||
}
|
||||
if (!strcmp(type, "cipher")) {
|
||||
const EVP_CIPHER *c;
|
||||
c = EVP_get_cipherbyname(value);
|
||||
if (!c)
|
||||
return 0;
|
||||
return pkey_cbcmac_ctrl(ctx, EVP_PKEY_CTRL_CIPHER, -1, (void *)c);
|
||||
}
|
||||
if (!strcmp(type, "hexkey")) {
|
||||
unsigned char *key;
|
||||
int r;
|
||||
long keylen;
|
||||
key = string_to_hex(value, &keylen);
|
||||
if (!key)
|
||||
return 0;
|
||||
r = pkey_cbcmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
|
||||
OPENSSL_free(key);
|
||||
return r;
|
||||
}
|
||||
return -2;
|
||||
}
|
||||
|
||||
const EVP_PKEY_METHOD cbcmac_pkey_meth = {
|
||||
EVP_PKEY_CBCMAC,
|
||||
EVP_PKEY_FLAG_SIGCTX_CUSTOM,
|
||||
pkey_cbcmac_init,
|
||||
pkey_cbcmac_copy,
|
||||
pkey_cbcmac_cleanup,
|
||||
|
||||
0, 0,
|
||||
|
||||
0,
|
||||
pkey_cbcmac_keygen,
|
||||
|
||||
0, 0,
|
||||
|
||||
0, 0,
|
||||
|
||||
0, 0,
|
||||
|
||||
cbcmac_signctx_init,
|
||||
cbcmac_signctx,
|
||||
|
||||
0, 0,
|
||||
|
||||
0, 0,
|
||||
|
||||
0, 0,
|
||||
|
||||
0, 0,
|
||||
|
||||
pkey_cbcmac_ctrl,
|
||||
pkey_cbcmac_ctrl_str
|
||||
};
|
||||
@@ -1,19 +1,22 @@
|
||||
#include <stdio.h>
|
||||
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <strings.h>
|
||||
#include <openssl/evp.h>
|
||||
#include <openssl/cbcmac.h>
|
||||
|
||||
struct CBCMAC_CTX_st {
|
||||
EVP_CIPHER_CTX cipher_ctx;
|
||||
unsigned char block[EVP_MAX_BLOCK_LENGTH];
|
||||
unsigned char tmp_block[EVP_MAX_BLOCK_LENGTH];
|
||||
unsigned char cbcstate[EVP_MAX_BLOCK_LENGTH];
|
||||
unsigned char workspace[EVP_MAX_BLOCK_LENGTH];
|
||||
int worklen;
|
||||
};
|
||||
|
||||
|
||||
CBCMAC *CBCMAC_CTX_new(void)
|
||||
CBCMAC_CTX *CBCMAC_CTX_new(void)
|
||||
{
|
||||
CBCMAC_CTX *ret;
|
||||
|
||||
if (!(ret = OPENSSL_malloc(*ret))) {
|
||||
if (!(ret = OPENSSL_malloc(sizeof(*ret)))) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@@ -25,8 +28,8 @@ CBCMAC *CBCMAC_CTX_new(void)
|
||||
void CBCMAC_CTX_cleanup(CBCMAC_CTX *ctx)
|
||||
{
|
||||
EVP_CIPHER_CTX_cleanup(&ctx->cipher_ctx);
|
||||
OPENSSL_cleanse(ctx->block, EVP_MAX_BLOCK_LENGTH);
|
||||
OPENSSL_cleanse(ctx->tmp_block, EVP_MAX_BLOCK_LENGTH);
|
||||
OPENSSL_cleanse(ctx->cbcstate, EVP_MAX_BLOCK_LENGTH);
|
||||
OPENSSL_cleanse(ctx->workspace, EVP_MAX_BLOCK_LENGTH);
|
||||
}
|
||||
|
||||
EVP_CIPHER_CTX *CBCMAC_CTX_get0_cipher_ctx(CBCMAC_CTX *ctx)
|
||||
@@ -48,18 +51,90 @@ int CBCMAC_CTX_copy(CBCMAC_CTX *to, const CBCMAC_CTX *from)
|
||||
}
|
||||
|
||||
int CBCMAC_Init(CBCMAC_CTX *ctx, const void *key, size_t keylen,
|
||||
const EVP_CIPHER *cipher, ENGINE *impl)
|
||||
const EVP_CIPHER *cipher, ENGINE *eng)
|
||||
{
|
||||
int i, block_size;
|
||||
|
||||
if (!EVP_EncryptInit_ex(&ctx->cipher_ctx, cipher, key, NULL, eng)) {
|
||||
return 0;
|
||||
}
|
||||
if (EVP_CIPHER_CTX_mode(&ctx->cipher_ctx) != EVP_CIPH_ECB_MODE) {
|
||||
return 0;
|
||||
}
|
||||
ctx->worklen = 0;
|
||||
block_size = EVP_CIPHER_CTX_block_size(&ctx->cipher_ctx);
|
||||
bzero(ctx->cbcstate, block_size);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int CBCMAC_Update(CBCMAC_CTX *ctx, const void *data, size_t datalen)
|
||||
{
|
||||
int block_size;
|
||||
int i, n, len;
|
||||
const unsigned char *in = (const unsigned char *)data;
|
||||
|
||||
block_size = EVP_CIPHER_CTX_block_size(&ctx->cipher_ctx);
|
||||
|
||||
|
||||
if (ctx->worklen) {
|
||||
n = block_size - ctx->worklen;
|
||||
if (datalen < n) {
|
||||
for (i = 0; i < datalen; i++) {
|
||||
ctx->workspace[ctx->worklen + i] = in[i];
|
||||
}
|
||||
ctx->worklen += datalen;
|
||||
return 0;
|
||||
} else {
|
||||
for (i = 0; i < n; i++) {
|
||||
ctx->workspace[ctx->worklen + i] = in[i] ^ ctx->cbcstate[i];
|
||||
}
|
||||
if (!EVP_EncryptUpdate(&ctx->cipher_ctx, ctx->cbcstate, &len,
|
||||
ctx->workspace, block_size)) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
while (n < datalen) {
|
||||
for (i = 0; i < block_size; i++) {
|
||||
ctx->workspace[i] = in[n + i] ^ ctx->cbcstate[i];
|
||||
}
|
||||
n += block_size;
|
||||
|
||||
if (!EVP_EncryptUpdate(&ctx->cipher_ctx, ctx->cbcstate, &len,
|
||||
ctx->workspace, block_size)) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
ctx->worklen = datalen - n;
|
||||
|
||||
for (i = 0; i < ctx->worklen; i++) {
|
||||
ctx->workspace[i] = in[n + i];
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int CBCMAC_Final(CBCMAC_CTX *ctx, unsigned char *out, size_t *outlen)
|
||||
{
|
||||
int i;
|
||||
int block_size = EVP_CIPHER_CTX_block_size(&(ctx->cipher_ctx));
|
||||
|
||||
if (ctx->worklen) {
|
||||
for (i = ctx->worklen; i < block_size; i++) {
|
||||
ctx->workspace[i] = ctx->cbcstate[i];
|
||||
}
|
||||
EVP_EncryptUpdate(&(ctx->cipher_ctx), out, outlen, ctx->workspace, block_size);
|
||||
|
||||
} else {
|
||||
for (i = 0; i < block_size; i++) {
|
||||
out[i] = ctx->cbcstate[i];
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user