diff options
Diffstat (limited to 'drivers/builtin_openssl/crypto/modes/xts128.c')
| -rw-r--r-- | drivers/builtin_openssl/crypto/modes/xts128.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/drivers/builtin_openssl/crypto/modes/xts128.c b/drivers/builtin_openssl/crypto/modes/xts128.c deleted file mode 100644 index 9cf27a25e9..0000000000 --- a/drivers/builtin_openssl/crypto/modes/xts128.c +++ /dev/null @@ -1,187 +0,0 @@ -/* ==================================================================== - * Copyright (c) 2011 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. - * ==================================================================== - */ - -#include <openssl/crypto.h> -#include "modes_lcl.h" -#include <string.h> - -#ifndef MODES_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include <assert.h> - -int CRYPTO_xts128_encrypt(const XTS128_CONTEXT *ctx, const unsigned char iv[16], - const unsigned char *inp, unsigned char *out, - size_t len, int enc) -{ - const union { long one; char little; } is_endian = {1}; - union { u64 u[2]; u32 d[4]; u8 c[16]; } tweak, scratch; - unsigned int i; - - if (len<16) return -1; - - memcpy(tweak.c, iv, 16); - - (*ctx->block2)(tweak.c,tweak.c,ctx->key2); - - if (!enc && (len%16)) len-=16; - - while (len>=16) { -#if defined(STRICT_ALIGNMENT) - memcpy(scratch.c,inp,16); - scratch.u[0] ^= tweak.u[0]; - scratch.u[1] ^= tweak.u[1]; -#else - scratch.u[0] = ((u64*)inp)[0]^tweak.u[0]; - scratch.u[1] = ((u64*)inp)[1]^tweak.u[1]; -#endif - (*ctx->block1)(scratch.c,scratch.c,ctx->key1); -#if defined(STRICT_ALIGNMENT) - scratch.u[0] ^= tweak.u[0]; - scratch.u[1] ^= tweak.u[1]; - memcpy(out,scratch.c,16); -#else - ((u64*)out)[0] = scratch.u[0]^=tweak.u[0]; - ((u64*)out)[1] = scratch.u[1]^=tweak.u[1]; -#endif - inp += 16; - out += 16; - len -= 16; - - if (len==0) return 0; - - if (is_endian.little) { - unsigned int carry,res; - - res = 0x87&(((int)tweak.d[3])>>31); - carry = (unsigned int)(tweak.u[0]>>63); - tweak.u[0] = (tweak.u[0]<<1)^res; - tweak.u[1] = (tweak.u[1]<<1)|carry; - } - else { - size_t c; - - for (c=0,i=0;i<16;++i) { - /*+ substitutes for |, because c is 1 bit */ - c += ((size_t)tweak.c[i])<<1; - tweak.c[i] = (u8)c; - c = c>>8; - } - tweak.c[0] ^= (u8)(0x87&(0-c)); - } - } - if (enc) { - for (i=0;i<len;++i) { - u8 c = inp[i]; - out[i] = scratch.c[i]; - scratch.c[i] = c; - } - scratch.u[0] ^= tweak.u[0]; - scratch.u[1] ^= tweak.u[1]; - (*ctx->block1)(scratch.c,scratch.c,ctx->key1); - scratch.u[0] ^= tweak.u[0]; - scratch.u[1] ^= tweak.u[1]; - memcpy(out-16,scratch.c,16); - } - else { - union { u64 u[2]; u8 c[16]; } tweak1; - - if (is_endian.little) { - unsigned int carry,res; - - res = 0x87&(((int)tweak.d[3])>>31); - carry = (unsigned int)(tweak.u[0]>>63); - tweak1.u[0] = (tweak.u[0]<<1)^res; - tweak1.u[1] = (tweak.u[1]<<1)|carry; - } - else { - size_t c; - - for (c=0,i=0;i<16;++i) { - /*+ substitutes for |, because c is 1 bit */ - c += ((size_t)tweak.c[i])<<1; - tweak1.c[i] = (u8)c; - c = c>>8; - } - tweak1.c[0] ^= (u8)(0x87&(0-c)); - } -#if defined(STRICT_ALIGNMENT) - memcpy(scratch.c,inp,16); - scratch.u[0] ^= tweak1.u[0]; - scratch.u[1] ^= tweak1.u[1]; -#else - scratch.u[0] = ((u64*)inp)[0]^tweak1.u[0]; - scratch.u[1] = ((u64*)inp)[1]^tweak1.u[1]; -#endif - (*ctx->block1)(scratch.c,scratch.c,ctx->key1); - scratch.u[0] ^= tweak1.u[0]; - scratch.u[1] ^= tweak1.u[1]; - - for (i=0;i<len;++i) { - u8 c = inp[16+i]; - out[16+i] = scratch.c[i]; - scratch.c[i] = c; - } - scratch.u[0] ^= tweak.u[0]; - scratch.u[1] ^= tweak.u[1]; - (*ctx->block1)(scratch.c,scratch.c,ctx->key1); -#if defined(STRICT_ALIGNMENT) - scratch.u[0] ^= tweak.u[0]; - scratch.u[1] ^= tweak.u[1]; - memcpy (out,scratch.c,16); -#else - ((u64*)out)[0] = scratch.u[0]^tweak.u[0]; - ((u64*)out)[1] = scratch.u[1]^tweak.u[1]; -#endif - } - - return 0; -} |