From d57e27e9b660f0127442966f4b388e83caefeafd Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Thu, 9 Feb 2012 06:25:37 +0000 Subject: This commit was manufactured by cvs2git to create branch 'OPENBSD_5_1'. --- src/lib/libcrypto/modes/cbc128.c | 206 ------------------------------- src/lib/libcrypto/modes/cfb128.c | 249 ------------------------------------- src/lib/libcrypto/modes/ctr128.c | 184 --------------------------- src/lib/libcrypto/modes/cts128.c | 259 --------------------------------------- src/lib/libcrypto/modes/modes.h | 59 --------- src/lib/libcrypto/modes/ofb128.c | 128 ------------------- 6 files changed, 1085 deletions(-) delete mode 100644 src/lib/libcrypto/modes/cbc128.c delete mode 100644 src/lib/libcrypto/modes/cfb128.c delete mode 100644 src/lib/libcrypto/modes/ctr128.c delete mode 100644 src/lib/libcrypto/modes/cts128.c delete mode 100644 src/lib/libcrypto/modes/modes.h delete mode 100644 src/lib/libcrypto/modes/ofb128.c (limited to 'src/lib/libcrypto/modes') diff --git a/src/lib/libcrypto/modes/cbc128.c b/src/lib/libcrypto/modes/cbc128.c deleted file mode 100644 index 8f8bd563b9..0000000000 --- a/src/lib/libcrypto/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 - -#ifndef MODES_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include - -#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=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 - -#ifndef MODES_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include - -#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=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 (l128) 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]<>(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> (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 - -#ifndef MODES_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include - -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 - -#ifndef MODES_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include - -/* - * Trouble with Ciphertext Stealing, CTS, mode is that there is no - * common official specification, but couple of cipher/application - * specific ones: RFC2040 and RFC3962. Then there is 'Proposal to - * Extend CBC Mode By "Ciphertext Stealing"' at NIST site, which - * deviates from mentioned RFCs. Most notably it allows input to be - * of block length and it doesn't flip the order of the last two - * blocks. CTS is being discussed even in ECB context, but it's not - * adopted for any known application. This implementation complies - * with mentioned RFCs and [as such] extends CBC mode. - */ - -size_t CRYPTO_cts128_encrypt_block(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], block128_f block) -{ size_t residue, n; - - assert (in && out && key && ivec); - - if (len <= 16) return 0; - - if ((residue=len%16) == 0) residue = 16; - - len -= residue; - - CRYPTO_cbc128_encrypt(in,out,len,key,ivec,block); - - in += len; - out += len; - - for (n=0; n -#include - -/* test vectors from RFC 3962 */ -static const unsigned char test_key[16] = "chicken teriyaki"; -static const unsigned char test_input[64] = - "I would like the" " General Gau's C" - "hicken, please, " "and wonton soup."; -static const unsigned char test_iv[16] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; - -static const unsigned char vector_17[17] = -{0xc6,0x35,0x35,0x68,0xf2,0xbf,0x8c,0xb4, 0xd8,0xa5,0x80,0x36,0x2d,0xa7,0xff,0x7f, - 0x97}; -static const unsigned char vector_31[31] = -{0xfc,0x00,0x78,0x3e,0x0e,0xfd,0xb2,0xc1, 0xd4,0x45,0xd4,0xc8,0xef,0xf7,0xed,0x22, - 0x97,0x68,0x72,0x68,0xd6,0xec,0xcc,0xc0, 0xc0,0x7b,0x25,0xe2,0x5e,0xcf,0xe5}; -static const unsigned char vector_32[32] = -{0x39,0x31,0x25,0x23,0xa7,0x86,0x62,0xd5, 0xbe,0x7f,0xcb,0xcc,0x98,0xeb,0xf5,0xa8, - 0x97,0x68,0x72,0x68,0xd6,0xec,0xcc,0xc0, 0xc0,0x7b,0x25,0xe2,0x5e,0xcf,0xe5,0x84}; -static const unsigned char vector_47[47] = -{0x97,0x68,0x72,0x68,0xd6,0xec,0xcc,0xc0, 0xc0,0x7b,0x25,0xe2,0x5e,0xcf,0xe5,0x84, - 0xb3,0xff,0xfd,0x94,0x0c,0x16,0xa1,0x8c, 0x1b,0x55,0x49,0xd2,0xf8,0x38,0x02,0x9e, - 0x39,0x31,0x25,0x23,0xa7,0x86,0x62,0xd5, 0xbe,0x7f,0xcb,0xcc,0x98,0xeb,0xf5}; -static const unsigned char vector_48[48] = -{0x97,0x68,0x72,0x68,0xd6,0xec,0xcc,0xc0, 0xc0,0x7b,0x25,0xe2,0x5e,0xcf,0xe5,0x84, - 0x9d,0xad,0x8b,0xbb,0x96,0xc4,0xcd,0xc0, 0x3b,0xc1,0x03,0xe1,0xa1,0x94,0xbb,0xd8, - 0x39,0x31,0x25,0x23,0xa7,0x86,0x62,0xd5, 0xbe,0x7f,0xcb,0xcc,0x98,0xeb,0xf5,0xa8}; -static const unsigned char vector_64[64] = -{0x97,0x68,0x72,0x68,0xd6,0xec,0xcc,0xc0, 0xc0,0x7b,0x25,0xe2,0x5e,0xcf,0xe5,0x84, - 0x39,0x31,0x25,0x23,0xa7,0x86,0x62,0xd5, 0xbe,0x7f,0xcb,0xcc,0x98,0xeb,0xf5,0xa8, - 0x48,0x07,0xef,0xe8,0x36,0xee,0x89,0xa5, 0x26,0x73,0x0d,0xbc,0x2f,0x7b,0xc8,0x40, - 0x9d,0xad,0x8b,0xbb,0x96,0xc4,0xcd,0xc0, 0x3b,0xc1,0x03,0xe1,0xa1,0x94,0xbb,0xd8}; - -static AES_KEY encks, decks; - -void test_vector(const unsigned char *vector,size_t len) -{ unsigned char cleartext[64]; - unsigned char iv[sizeof(test_iv)]; - unsigned char ciphertext[64]; - size_t tail; - - printf("vector_%d\n",len); fflush(stdout); - - if ((tail=len%16) == 0) tail = 16; - tail += 16; - - /* test block-based encryption */ - memcpy(iv,test_iv,sizeof(test_iv)); - CRYPTO_cts128_encrypt_block(test_input,ciphertext,len,&encks,iv,(block128_f)AES_encrypt); - if (memcmp(ciphertext,vector,len)) - fprintf(stderr,"output_%d mismatch\n",len), exit(1); - if (memcmp(iv,vector+len-tail,sizeof(iv))) - fprintf(stderr,"iv_%d mismatch\n",len), exit(1); - - /* test block-based decryption */ - memcpy(iv,test_iv,sizeof(test_iv)); - CRYPTO_cts128_decrypt_block(ciphertext,cleartext,len,&decks,iv,(block128_f)AES_decrypt); - if (memcmp(cleartext,test_input,len)) - fprintf(stderr,"input_%d mismatch\n",len), exit(2); - if (memcmp(iv,vector+len-tail,sizeof(iv))) - fprintf(stderr,"iv_%d mismatch\n",len), exit(2); - - /* test streamed encryption */ - memcpy(iv,test_iv,sizeof(test_iv)); - CRYPTO_cts128_encrypt(test_input,ciphertext,len,&encks,iv,(cbc128_f)AES_cbc_encrypt); - if (memcmp(ciphertext,vector,len)) - fprintf(stderr,"output_%d mismatch\n",len), exit(3); - if (memcmp(iv,vector+len-tail,sizeof(iv))) - fprintf(stderr,"iv_%d mismatch\n",len), exit(3); - - /* test streamed decryption */ - memcpy(iv,test_iv,sizeof(test_iv)); - CRYPTO_cts128_decrypt(ciphertext,cleartext,len,&decks,iv,(cbc128_f)AES_cbc_encrypt); - if (memcmp(cleartext,test_input,len)) - fprintf(stderr,"input_%d mismatch\n",len), exit(4); - if (memcmp(iv,vector+len-tail,sizeof(iv))) - fprintf(stderr,"iv_%d mismatch\n",len), exit(4); -} - -main() -{ - AES_set_encrypt_key(test_key,128,&encks); - AES_set_decrypt_key(test_key,128,&decks); - - test_vector(vector_17,sizeof(vector_17)); - test_vector(vector_31,sizeof(vector_31)); - test_vector(vector_32,sizeof(vector_32)); - test_vector(vector_47,sizeof(vector_47)); - test_vector(vector_48,sizeof(vector_48)); - test_vector(vector_64,sizeof(vector_64)); - exit(0); -} -#endif diff --git a/src/lib/libcrypto/modes/modes.h b/src/lib/libcrypto/modes/modes.h deleted file mode 100644 index af8d97d795..0000000000 --- a/src/lib/libcrypto/modes/modes.h +++ /dev/null @@ -1,59 +0,0 @@ -/* ==================================================================== - * Copyright (c) 2008 The OpenSSL Project. All rights reserved. - * - * Rights for redistribution and usage in source and binary - * forms are granted according to the OpenSSL license. - */ - -#include - -typedef void (*block128_f)(const unsigned char in[16], - unsigned char out[16], - const void *key); - -typedef void (*cbc128_f)(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], int enc); - -void CRYPTO_cbc128_encrypt(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], block128_f block); -void CRYPTO_cbc128_decrypt(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], block128_f block); - -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); - -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); - -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); -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); -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 CRYPTO_cts128_encrypt_block(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], block128_f block); -size_t CRYPTO_cts128_encrypt(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], cbc128_f cbc); -size_t CRYPTO_cts128_decrypt_block(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], block128_f block); -size_t CRYPTO_cts128_decrypt(const unsigned char *in, unsigned char *out, - size_t len, const void *key, - unsigned char ivec[16], cbc128_f cbc); diff --git a/src/lib/libcrypto/modes/ofb128.c b/src/lib/libcrypto/modes/ofb128.c deleted file mode 100644 index c732e2ec58..0000000000 --- a/src/lib/libcrypto/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 - -#ifndef MODES_DEBUG -# ifndef NDEBUG -# define NDEBUG -# endif -#endif -#include - -#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