diff options
Diffstat (limited to 'app/openssl/crypto/modes')
| -rw-r--r-- | app/openssl/crypto/modes/cbc128.c | 206 | ||||
| -rw-r--r-- | app/openssl/crypto/modes/cfb128.c | 249 | ||||
| -rw-r--r-- | app/openssl/crypto/modes/ctr128.c | 184 | ||||
| -rw-r--r-- | app/openssl/crypto/modes/ofb128.c | 128 |
4 files changed, 0 insertions, 767 deletions
diff --git a/app/openssl/crypto/modes/cbc128.c b/app/openssl/crypto/modes/cbc128.c deleted file mode 100644 index 8f8bd563..00000000 --- a/app/openssl/crypto/modes/cbc128.c +++ /dev/null @@ -1,206 +0,0 @@ -/* ==================================================================== - * Copyright (c) 2008 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 "modes.h" -#include <string.h> - -#ifndef MODES_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include <assert.h> - -#define STRICT_ALIGNMENT 1 -#if defined(__i386) || defined(__i386__) || \ - defined(__x86_64) || defined(__x86_64__) || \ - defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64) || \ - defined(__s390__) || defined(__s390x__) -# undef STRICT_ALIGNMENT -# define STRICT_ALIGNMENT 0 -#endif - -void CRYPTO_cbc128_encrypt(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], block128_f block) -{ - size_t n; - const unsigned char *iv = ivec; - - assert(in && out && key && ivec); - -#if !defined(OPENSSL_SMALL_FOOTPRINT) - if (STRICT_ALIGNMENT && - ((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) { - while (len>=16) { - for(n=0; n<16; ++n) - out[n] = in[n] ^ iv[n]; - (*block)(out, out, key); - iv = out; - len -= 16; - in += 16; - out += 16; - } - } else { - while (len>=16) { - for(n=0; n<16; n+=sizeof(size_t)) - *(size_t*)(out+n) = - *(size_t*)(in+n) ^ *(size_t*)(iv+n); - (*block)(out, out, key); - iv = out; - len -= 16; - in += 16; - out += 16; - } - } -#endif - while (len) { - for(n=0; n<16 && n<len; ++n) - out[n] = in[n] ^ iv[n]; - for(; n<16; ++n) - out[n] = iv[n]; - (*block)(out, out, key); - iv = out; - if (len<=16) break; - len -= 16; - in += 16; - out += 16; - } - memcpy(ivec,iv,16); -} - -void CRYPTO_cbc128_decrypt(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], block128_f block) -{ - size_t n; - union { size_t align; unsigned char c[16]; } tmp; - - assert(in && out && key && ivec); - -#if !defined(OPENSSL_SMALL_FOOTPRINT) - if (in != out) { - const unsigned char *iv = ivec; - - if (STRICT_ALIGNMENT && - ((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) { - while (len>=16) { - (*block)(in, out, key); - for(n=0; n<16; ++n) - out[n] ^= iv[n]; - iv = in; - len -= 16; - in += 16; - out += 16; - } - } - else { - while (len>=16) { - (*block)(in, out, key); - for(n=0; n<16; n+=sizeof(size_t)) - *(size_t *)(out+n) ^= *(size_t *)(iv+n); - iv = in; - len -= 16; - in += 16; - out += 16; - } - } - memcpy(ivec,iv,16); - } else { - if (STRICT_ALIGNMENT && - ((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) { - unsigned char c; - while (len>=16) { - (*block)(in, tmp.c, key); - for(n=0; n<16; ++n) { - c = in[n]; - out[n] = tmp.c[n] ^ ivec[n]; - ivec[n] = c; - } - len -= 16; - in += 16; - out += 16; - } - } - else { - size_t c; - while (len>=16) { - (*block)(in, tmp.c, key); - for(n=0; n<16; n+=sizeof(size_t)) { - c = *(size_t *)(in+n); - *(size_t *)(out+n) = - *(size_t *)(tmp.c+n) ^ *(size_t *)(ivec+n); - *(size_t *)(ivec+n) = c; - } - len -= 16; - in += 16; - out += 16; - } - } - } -#endif - while (len) { - unsigned char c; - (*block)(in, tmp.c, key); - for(n=0; n<16 && n<len; ++n) { - c = in[n]; - out[n] = tmp.c[n] ^ ivec[n]; - ivec[n] = c; - } - if (len<=16) { - for (; n<16; ++n) - ivec[n] = in[n]; - break; - } - len -= 16; - in += 16; - out += 16; - } -} diff --git a/app/openssl/crypto/modes/cfb128.c b/app/openssl/crypto/modes/cfb128.c deleted file mode 100644 index e5938c61..00000000 --- a/app/openssl/crypto/modes/cfb128.c +++ /dev/null @@ -1,249 +0,0 @@ -/* ==================================================================== - * Copyright (c) 2008 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 "modes.h" -#include <string.h> - -#ifndef MODES_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include <assert.h> - -#define STRICT_ALIGNMENT -#if defined(__i386) || defined(__i386__) || \ - defined(__x86_64) || defined(__x86_64__) || \ - defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64) || \ - defined(__s390__) || defined(__s390x__) -# undef STRICT_ALIGNMENT -#endif - -/* The input and output encrypted as though 128bit cfb mode is being - * used. The extra state information to record how much of the - * 128bit block we have used is contained in *num; - */ -void CRYPTO_cfb128_encrypt(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], int *num, - int enc, block128_f block) -{ - unsigned int n; - size_t l = 0; - - assert(in && out && key && ivec && num); - - n = *num; - - if (enc) { -#if !defined(OPENSSL_SMALL_FOOTPRINT) - if (16%sizeof(size_t) == 0) do { /* always true actually */ - while (n && len) { - *(out++) = ivec[n] ^= *(in++); - --len; - n = (n+1) % 16; - } -#if defined(STRICT_ALIGNMENT) - if (((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) - break; -#endif - while (len>=16) { - (*block)(ivec, ivec, key); - for (; n<16; n+=sizeof(size_t)) { - *(size_t*)(out+n) = - *(size_t*)(ivec+n) ^= *(size_t*)(in+n); - } - len -= 16; - out += 16; - in += 16; - n = 0; - } - if (len) { - (*block)(ivec, ivec, key); - while (len--) { - out[n] = ivec[n] ^= in[n]; - ++n; - } - } - *num = n; - return; - } while (0); - /* the rest would be commonly eliminated by x86* compiler */ -#endif - while (l<len) { - if (n == 0) { - (*block)(ivec, ivec, key); - } - out[l] = ivec[n] ^= in[l]; - ++l; - n = (n+1) % 16; - } - *num = n; - } else { -#if !defined(OPENSSL_SMALL_FOOTPRINT) - if (16%sizeof(size_t) == 0) do { /* always true actually */ - while (n && len) { - unsigned char c; - *(out++) = ivec[n] ^ (c = *(in++)); ivec[n] = c; - --len; - n = (n+1) % 16; - } -#if defined(STRICT_ALIGNMENT) - if (((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) - break; -#endif - while (len>=16) { - (*block)(ivec, ivec, key); - for (; n<16; n+=sizeof(size_t)) { - size_t t = *(size_t*)(in+n); - *(size_t*)(out+n) = *(size_t*)(ivec+n) ^ t; - *(size_t*)(ivec+n) = t; - } - len -= 16; - out += 16; - in += 16; - n = 0; - } - if (len) { - (*block)(ivec, ivec, key); - while (len--) { - unsigned char c; - out[n] = ivec[n] ^ (c = in[n]); ivec[n] = c; - ++n; - } - } - *num = n; - return; - } while (0); - /* the rest would be commonly eliminated by x86* compiler */ -#endif - while (l<len) { - unsigned char c; - if (n == 0) { - (*block)(ivec, ivec, key); - } - out[l] = ivec[n] ^ (c = in[l]); ivec[n] = c; - ++l; - n = (n+1) % 16; - } - *num=n; - } -} - -/* This expects a single block of size nbits for both in and out. Note that - it corrupts any extra bits in the last byte of out */ -static void cfbr_encrypt_block(const unsigned char *in,unsigned char *out, - int nbits,const void *key, - unsigned char ivec[16],int enc, - block128_f block) -{ - int n,rem,num; - unsigned char ovec[16*2 + 1]; /* +1 because we dererefence (but don't use) one byte off the end */ - - if (nbits<=0 || nbits>128) return; - - /* fill in the first half of the new IV with the current IV */ - memcpy(ovec,ivec,16); - /* construct the new IV */ - (*block)(ivec,ivec,key); - num = (nbits+7)/8; - if (enc) /* encrypt the input */ - for(n=0 ; n < num ; ++n) - out[n] = (ovec[16+n] = in[n] ^ ivec[n]); - else /* decrypt the input */ - for(n=0 ; n < num ; ++n) - out[n] = (ovec[16+n] = in[n]) ^ ivec[n]; - /* shift ovec left... */ - rem = nbits%8; - num = nbits/8; - if(rem==0) - memcpy(ivec,ovec+num,16); - else - for(n=0 ; n < 16 ; ++n) - ivec[n] = ovec[n+num]<<rem | ovec[n+num+1]>>(8-rem); - - /* it is not necessary to cleanse ovec, since the IV is not secret */ -} - -/* N.B. This expects the input to be packed, MS bit first */ -void CRYPTO_cfb128_1_encrypt(const unsigned char *in, unsigned char *out, - size_t bits, const void *key, - unsigned char ivec[16], int *num, - int enc, block128_f block) -{ - size_t n; - unsigned char c[1],d[1]; - - assert(in && out && key && ivec && num); - assert(*num == 0); - - for(n=0 ; n<bits ; ++n) - { - c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0; - cfbr_encrypt_block(c,d,1,key,ivec,enc,block); - out[n/8]=(out[n/8]&~(1 << (unsigned int)(7-n%8))) | - ((d[0]&0x80) >> (unsigned int)(n%8)); - } -} - -void CRYPTO_cfb128_8_encrypt(const unsigned char *in, unsigned char *out, - size_t length, const void *key, - unsigned char ivec[16], int *num, - int enc, block128_f block) -{ - size_t n; - - assert(in && out && key && ivec && num); - assert(*num == 0); - - for(n=0 ; n<length ; ++n) - cfbr_encrypt_block(&in[n],&out[n],8,key,ivec,enc,block); -} - diff --git a/app/openssl/crypto/modes/ctr128.c b/app/openssl/crypto/modes/ctr128.c deleted file mode 100644 index 932037f5..00000000 --- a/app/openssl/crypto/modes/ctr128.c +++ /dev/null @@ -1,184 +0,0 @@ -/* ==================================================================== - * Copyright (c) 2008 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 "modes.h" -#include <string.h> - -#ifndef MODES_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include <assert.h> - -typedef unsigned int u32; -typedef unsigned char u8; - -#define STRICT_ALIGNMENT -#if defined(__i386) || defined(__i386__) || \ - defined(__x86_64) || defined(__x86_64__) || \ - defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64) || \ - defined(__s390__) || defined(__s390x__) -# undef STRICT_ALIGNMENT -#endif - -/* NOTE: the IV/counter CTR mode is big-endian. The code itself - * is endian-neutral. */ - -/* increment counter (128-bit int) by 1 */ -static void ctr128_inc(unsigned char *counter) { - u32 n=16; - u8 c; - - do { - --n; - c = counter[n]; - ++c; - counter[n] = c; - if (c) return; - } while (n); -} - -#if !defined(OPENSSL_SMALL_FOOTPRINT) -static void ctr128_inc_aligned(unsigned char *counter) { - size_t *data,c,n; - const union { long one; char little; } is_endian = {1}; - - if (is_endian.little) { - ctr128_inc(counter); - return; - } - - data = (size_t *)counter; - n = 16/sizeof(size_t); - do { - --n; - c = data[n]; - ++c; - data[n] = c; - if (c) return; - } while (n); -} -#endif - -/* 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 CRYPTO_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 CRYPTO_ctr128_encrypt(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], unsigned char ecount_buf[16], - unsigned int *num, block128_f block) -{ - unsigned int n; - size_t l=0; - - assert(in && out && key && ecount_buf && num); - assert(*num < 16); - - n = *num; - -#if !defined(OPENSSL_SMALL_FOOTPRINT) - if (16%sizeof(size_t) == 0) do { /* always true actually */ - while (n && len) { - *(out++) = *(in++) ^ ecount_buf[n]; - --len; - n = (n+1) % 16; - } - -#if defined(STRICT_ALIGNMENT) - if (((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) - break; -#endif - while (len>=16) { - (*block)(ivec, ecount_buf, key); - ctr128_inc_aligned(ivec); - for (; n<16; n+=sizeof(size_t)) - *(size_t *)(out+n) = - *(size_t *)(in+n) ^ *(size_t *)(ecount_buf+n); - len -= 16; - out += 16; - in += 16; - n = 0; - } - if (len) { - (*block)(ivec, ecount_buf, key); - ctr128_inc_aligned(ivec); - while (len--) { - out[n] = in[n] ^ ecount_buf[n]; - ++n; - } - } - *num = n; - return; - } while(0); - /* the rest would be commonly eliminated by x86* compiler */ -#endif - while (l<len) { - if (n==0) { - (*block)(ivec, ecount_buf, key); - ctr128_inc(ivec); - } - out[l] = in[l] ^ ecount_buf[n]; - ++l; - n = (n+1) % 16; - } - - *num=n; -} diff --git a/app/openssl/crypto/modes/ofb128.c b/app/openssl/crypto/modes/ofb128.c deleted file mode 100644 index c732e2ec..00000000 --- a/app/openssl/crypto/modes/ofb128.c +++ /dev/null @@ -1,128 +0,0 @@ -/* ==================================================================== - * Copyright (c) 2008 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 "modes.h" -#include <string.h> - -#ifndef MODES_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include <assert.h> - -#define STRICT_ALIGNMENT -#if defined(__i386) || defined(__i386__) || \ - defined(__x86_64) || defined(__x86_64__) || \ - defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64) || \ - defined(__s390__) || defined(__s390x__) -# undef STRICT_ALIGNMENT -#endif - -/* The input and output encrypted as though 128bit ofb mode is being - * used. The extra state information to record how much of the - * 128bit block we have used is contained in *num; - */ -void CRYPTO_ofb128_encrypt(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], int *num, - block128_f block) -{ - unsigned int n; - size_t l=0; - - assert(in && out && key && ivec && num); - - n = *num; - -#if !defined(OPENSSL_SMALL_FOOTPRINT) - if (16%sizeof(size_t) == 0) do { /* always true actually */ - while (n && len) { - *(out++) = *(in++) ^ ivec[n]; - --len; - n = (n+1) % 16; - } -#if defined(STRICT_ALIGNMENT) - if (((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) - break; -#endif - while (len>=16) { - (*block)(ivec, ivec, key); - for (; n<16; n+=sizeof(size_t)) - *(size_t*)(out+n) = - *(size_t*)(in+n) ^ *(size_t*)(ivec+n); - len -= 16; - out += 16; - in += 16; - n = 0; - } - if (len) { - (*block)(ivec, ivec, key); - while (len--) { - out[n] = in[n] ^ ivec[n]; - ++n; - } - } - *num = n; - return; - } while(0); - /* the rest would be commonly eliminated by x86* compiler */ -#endif - while (l<len) { - if (n==0) { - (*block)(ivec, ivec, key); - } - out[l] = in[l] ^ ivec[n]; - ++l; - n = (n+1) % 16; - } - - *num=n; -} |