-/* crypto/cmac/cmac.c */
/*
- * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project.
- */
-/* ====================================================================
- * 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.
+ * Copyright 2010-2016 The OpenSSL Project Authors. All Rights Reserved.
*
- * 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.
- * ====================================================================
+ * 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 <stdlib.h>
#include <string.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/cmac.h>
struct CMAC_CTX_st {
/* Cipher context to use */
- EVP_CIPHER_CTX cctx;
+ EVP_CIPHER_CTX *cctx;
/* Keys k1 and k2 */
unsigned char k1[EVP_MAX_BLOCK_LENGTH];
unsigned char k2[EVP_MAX_BLOCK_LENGTH];
CMAC_CTX *CMAC_CTX_new(void)
{
CMAC_CTX *ctx;
- ctx = OPENSSL_malloc(sizeof(CMAC_CTX));
- if (!ctx)
+
+ ctx = OPENSSL_malloc(sizeof(*ctx));
+ if (ctx == NULL)
+ return NULL;
+ ctx->cctx = EVP_CIPHER_CTX_new();
+ if (ctx->cctx == NULL) {
+ OPENSSL_free(ctx);
return NULL;
- EVP_CIPHER_CTX_init(&ctx->cctx);
+ }
ctx->nlast_block = -1;
return ctx;
}
void CMAC_CTX_cleanup(CMAC_CTX *ctx)
{
- EVP_CIPHER_CTX_cleanup(&ctx->cctx);
+ EVP_CIPHER_CTX_cleanup(ctx->cctx);
OPENSSL_cleanse(ctx->tbl, EVP_MAX_BLOCK_LENGTH);
OPENSSL_cleanse(ctx->k1, EVP_MAX_BLOCK_LENGTH);
OPENSSL_cleanse(ctx->k2, EVP_MAX_BLOCK_LENGTH);
EVP_CIPHER_CTX *CMAC_CTX_get0_cipher_ctx(CMAC_CTX *ctx)
{
- return &ctx->cctx;
+ return ctx->cctx;
}
void CMAC_CTX_free(CMAC_CTX *ctx)
if (!ctx)
return;
CMAC_CTX_cleanup(ctx);
+ EVP_CIPHER_CTX_free(ctx->cctx);
OPENSSL_free(ctx);
}
int bl;
if (in->nlast_block == -1)
return 0;
- if (!EVP_CIPHER_CTX_copy(&out->cctx, &in->cctx))
+ if (!EVP_CIPHER_CTX_copy(out->cctx, in->cctx))
return 0;
- bl = M_EVP_CIPHER_CTX_block_size(&in->cctx);
+ bl = EVP_CIPHER_CTX_block_size(in->cctx);
memcpy(out->k1, in->k1, bl);
memcpy(out->k2, in->k2, bl);
memcpy(out->tbl, in->tbl, bl);
/* Not initialised */
if (ctx->nlast_block == -1)
return 0;
- if (!M_EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
+ if (!EVP_EncryptInit_ex(ctx->cctx, NULL, NULL, NULL, zero_iv))
return 0;
- memset(ctx->tbl, 0, M_EVP_CIPHER_CTX_block_size(&ctx->cctx));
+ memset(ctx->tbl, 0, EVP_CIPHER_CTX_block_size(ctx->cctx));
ctx->nlast_block = 0;
return 1;
}
- /* Initialiase context */
- if (cipher && !M_EVP_EncryptInit_ex(&ctx->cctx, cipher, impl, NULL, NULL))
+ /* Initialise context */
+ if (cipher && !EVP_EncryptInit_ex(ctx->cctx, cipher, impl, NULL, NULL))
return 0;
/* Non-NULL key means initialisation complete */
if (key) {
int bl;
- if (!M_EVP_CIPHER_CTX_cipher(&ctx->cctx))
+ if (!EVP_CIPHER_CTX_cipher(ctx->cctx))
return 0;
- if (!EVP_CIPHER_CTX_set_key_length(&ctx->cctx, keylen))
+ if (!EVP_CIPHER_CTX_set_key_length(ctx->cctx, keylen))
return 0;
- if (!M_EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, key, zero_iv))
+ if (!EVP_EncryptInit_ex(ctx->cctx, NULL, NULL, key, zero_iv))
return 0;
- bl = M_EVP_CIPHER_CTX_block_size(&ctx->cctx);
- if (!EVP_Cipher(&ctx->cctx, ctx->tbl, zero_iv, bl))
+ bl = EVP_CIPHER_CTX_block_size(ctx->cctx);
+ if (!EVP_Cipher(ctx->cctx, ctx->tbl, zero_iv, bl))
return 0;
make_kn(ctx->k1, ctx->tbl, bl);
make_kn(ctx->k2, ctx->k1, bl);
OPENSSL_cleanse(ctx->tbl, bl);
/* Reset context again ready for first data block */
- if (!M_EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
+ if (!EVP_EncryptInit_ex(ctx->cctx, NULL, NULL, NULL, zero_iv))
return 0;
/* Zero tbl so resume works */
memset(ctx->tbl, 0, bl);
return 0;
if (dlen == 0)
return 1;
- bl = M_EVP_CIPHER_CTX_block_size(&ctx->cctx);
+ bl = EVP_CIPHER_CTX_block_size(ctx->cctx);
/* Copy into partial block if we need to */
if (ctx->nlast_block > 0) {
size_t nleft;
return 1;
data += nleft;
/* Else not final block so encrypt it */
- if (!EVP_Cipher(&ctx->cctx, ctx->tbl, ctx->last_block, bl))
+ if (!EVP_Cipher(ctx->cctx, ctx->tbl, ctx->last_block, bl))
return 0;
}
/* Encrypt all but one of the complete blocks left */
while (dlen > bl) {
- if (!EVP_Cipher(&ctx->cctx, ctx->tbl, data, bl))
+ if (!EVP_Cipher(ctx->cctx, ctx->tbl, data, bl))
return 0;
dlen -= bl;
data += bl;
int i, bl, lb;
if (ctx->nlast_block == -1)
return 0;
- bl = M_EVP_CIPHER_CTX_block_size(&ctx->cctx);
+ bl = EVP_CIPHER_CTX_block_size(ctx->cctx);
*poutlen = (size_t)bl;
if (!out)
return 1;
for (i = 0; i < bl; i++)
out[i] = ctx->last_block[i] ^ ctx->k2[i];
}
- if (!EVP_Cipher(&ctx->cctx, out, out, bl)) {
+ if (!EVP_Cipher(ctx->cctx, out, out, bl)) {
OPENSSL_cleanse(out, bl);
return 0;
}
if (ctx->nlast_block == -1)
return 0;
/*
- * The buffer "tbl" containes the last fully encrypted block which is the
+ * The buffer "tbl" contains the last fully encrypted block which is the
* last IV (or all zeroes if no last encrypted block). The last block has
- * not been modified since CMAC_final(). So reinitliasing using the last
+ * not been modified since CMAC_final(). So reinitialising using the last
* decrypted block will allow CMAC to continue after calling
* CMAC_Final().
*/
- return M_EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, ctx->tbl);
+ return EVP_EncryptInit_ex(ctx->cctx, NULL, NULL, NULL, ctx->tbl);
}
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