X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fcamellia%2Fcmll_ctr.c;h=fa00150ec99f2dd714309d28c1be2260a68cf1db;hp=a6cdc6695793764f9f3f1693f5231979c1a1b4df;hb=291850b473ef5d83ac7d90bdcd7f68d186515348;hpb=5ee92a5ec1c743b5d3b5d2c7558d0f39e302b7e7;ds=sidebyside diff --git a/crypto/camellia/cmll_ctr.c b/crypto/camellia/cmll_ctr.c index a6cdc66957..fa00150ec9 100644 --- a/crypto/camellia/cmll_ctr.c +++ b/crypto/camellia/cmll_ctr.c @@ -1,143 +1,28 @@ -/* crypto/camellia/camellia_ctr.c -*- mode:C; c-file-style: "eay" -*- */ -/* ==================================================================== - * Copyright (c) 2006 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 - * openssl-core@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. - * ==================================================================== +/* + * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved. * + * Licensed under the Apache License 2.0 (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 */ -#ifndef CAMELLIA_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include +/* + * Camellia low level APIs are deprecated for public use, but still ok for + * internal use. + */ +#include "internal/deprecated.h" #include -#include -#include "cmll_locl.h" - -/* NOTE: the IV/counter CTR mode is big-endian. The rest of the Camellia code - * is endian-neutral. */ -/* increment counter (128-bit int) by 1 */ -static void Camellia_ctr128_inc(unsigned char *counter) - { - unsigned long c; - - /* Grab bottom dword of counter and increment */ - c = GETU32(counter + 12); - c++; c &= 0xFFFFFFFF; - PUTU32(counter + 12, c); - - /* if no overflow, we're done */ - if (c) - return; - - /* Grab 1st dword of counter and increment */ - c = GETU32(counter + 8); - c++; c &= 0xFFFFFFFF; - PUTU32(counter + 8, c); +#include - /* if no overflow, we're done */ - if (c) - return; - - /* Grab 2nd dword of counter and increment */ - c = GETU32(counter + 4); - c++; c &= 0xFFFFFFFF; - PUTU32(counter + 4, c); - - /* if no overflow, we're done */ - if (c) - return; - - /* Grab top dword of counter and increment */ - c = GETU32(counter + 0); - c++; c &= 0xFFFFFFFF; - PUTU32(counter + 0, c); - } - -/* The input encrypted as though 128bit counter mode is being - * used. The extra state information to record how much of the - * 128bit block we have used is contained in *num, and the - * encrypted counter is kept in ecount_buf. Both *num and - * ecount_buf must be initialised with zeros before the first - * call to Camellia_ctr128_encrypt(). - * - * This algorithm assumes that the counter is in the x lower bits - * of the IV (ivec), and that the application has full control over - * overflow and the rest of the IV. This implementation takes NO - * responsability for checking that the counter doesn't overflow - * into the rest of the IV when incremented. - */ void Camellia_ctr128_encrypt(const unsigned char *in, unsigned char *out, - size_t length, const CAMELLIA_KEY *key, - unsigned char ivec[CAMELLIA_BLOCK_SIZE], - unsigned char ecount_buf[CAMELLIA_BLOCK_SIZE], - unsigned int *num) - { - - unsigned int n; - - OPENSSL_assert(in && out && key && ecount_buf && num); - OPENSSL_assert(*num < CAMELLIA_BLOCK_SIZE); - - n = *num; - - while (length--) - { - if (n == 0) - { - Camellia_encrypt(ivec, ecount_buf, key); - Camellia_ctr128_inc(ivec); - } - *(out++) = *(in++) ^ ecount_buf[n]; - n = (n+1) % CAMELLIA_BLOCK_SIZE; - } - - *num=n; - } - + size_t length, const CAMELLIA_KEY *key, + unsigned char ivec[CAMELLIA_BLOCK_SIZE], + unsigned char ecount_buf[CAMELLIA_BLOCK_SIZE], + unsigned int *num) +{ + + CRYPTO_ctr128_encrypt(in, out, length, key, ivec, ecount_buf, num, + (block128_f) Camellia_encrypt); +}