diff options
Diffstat (limited to 'openssl/trunk/crypto/camellia/cmll_ctr.c')
| -rw-r--r-- | openssl/trunk/crypto/camellia/cmll_ctr.c | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/openssl/trunk/crypto/camellia/cmll_ctr.c b/openssl/trunk/crypto/camellia/cmll_ctr.c deleted file mode 100644 index cc21b708..00000000 --- a/openssl/trunk/crypto/camellia/cmll_ctr.c +++ /dev/null @@ -1,143 +0,0 @@ -/* 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. - * ==================================================================== - * - */ - -#ifndef CAMELLIA_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include <assert.h> - -#include <openssl/camellia.h> -#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); - - /* 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, - const unsigned long length, const CAMELLIA_KEY *key, - unsigned char ivec[CAMELLIA_BLOCK_SIZE], - unsigned char ecount_buf[CAMELLIA_BLOCK_SIZE], - unsigned int *num) - { - - unsigned int n; - unsigned long l=length; - - assert(in && out && key && counter && num); - assert(*num < CAMELLIA_BLOCK_SIZE); - - n = *num; - - while (l--) - { - 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; - } - |