--- /dev/null
+#
+# OpenSSL/crypto/modes/Makefile
+#
+
+DIR= modes
+TOP= ../..
+CC= cc
+INCLUDES= -I.. -I$(TOP) -I../../include
+CFLAG=-g
+MAKEFILE= Makefile
+AR= ar r
+
+CFLAGS= $(INCLUDES) $(CFLAG)
+
+GENERAL=Makefile
+TEST=
+APPS=
+
+LIB=$(TOP)/libcrypto.a
+LIBSRC= cbc128.c ctr128.c cfb128.c ofb128.c
+LIBOBJ= cbc128.o ctr128.o cfb128.o ofb128.o
+
+SRC= $(LIBSRC)
+
+#EXHEADER= store.h str_compat.h
+EXHEADER= modes.h
+HEADER= $(EXHEADER)
+
+ALL= $(GENERAL) $(SRC) $(HEADER)
+
+top:
+ (cd ../..; $(MAKE) DIRS=crypto SDIRS=$(DIR) sub_all)
+
+all: lib
+
+lib: $(LIBOBJ)
+ $(AR) $(LIB) $(LIBOBJ)
+ $(RANLIB) $(LIB) || echo Never mind.
+ @touch lib
+
+files:
+ $(PERL) $(TOP)/util/files.pl Makefile >> $(TOP)/MINFO
+
+links:
+ @$(PERL) $(TOP)/util/mklink.pl ../../include/openssl $(EXHEADER)
+ @$(PERL) $(TOP)/util/mklink.pl ../../test $(TEST)
+ @$(PERL) $(TOP)/util/mklink.pl ../../apps $(APPS)
+
+install:
+ @[ -n "$(INSTALLTOP)" ] # should be set by top Makefile...
+ @headerlist="$(EXHEADER)"; for i in $$headerlist; \
+ do \
+ (cp $$i $(INSTALL_PREFIX)$(INSTALLTOP)/include/openssl/$$i; \
+ chmod 644 $(INSTALL_PREFIX)$(INSTALLTOP)/include/openssl/$$i ); \
+ done;
+
+tags:
+ ctags $(SRC)
+
+tests:
+
+lint:
+ lint -DLINT $(INCLUDES) $(SRC)>fluff
+
+depend:
+ @[ -n "$(MAKEDEPEND)" ] # should be set by upper Makefile...
+ $(MAKEDEPEND) -- $(CFLAG) $(INCLUDES) $(DEPFLAG) -- $(PROGS) $(LIBSRC)
+
+dclean:
+ $(PERL) -pe 'if (/^# DO NOT DELETE THIS LINE/) {print; exit(0);}' $(MAKEFILE) >Makefile.new
+ mv -f Makefile.new $(MAKEFILE)
+
+clean:
+ rm -f *.o */*.o *.obj lib tags core .pure .nfs* *.old *.bak fluff
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+cbc128.o: cbc128.c modes.h
+cfb128.o: cfb128.c modes.h
+ctr128.o: ctr128.c modes.h
+ofb128.o: modes.h ofb128.c
--- /dev/null
+/* ====================================================================
+ * 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 <stddef.h>
+#include <string.h>
+
+#ifndef MODES_DEBUG
+# ifndef NDEBUG
+# define NDEBUG
+# endif
+#endif
+#include <assert.h>
+
+#include "modes.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], block_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], block_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;
+ }
+}
--- /dev/null
+/* ====================================================================
+ * 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 <stddef.h>
+#include <string.h>
+
+#ifndef MODES_DEBUG
+# ifndef NDEBUG
+# define NDEBUG
+# endif
+#endif
+#include <assert.h>
+
+#include "modes.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, block_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=0; 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=0; 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,
+ block_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, block_f block)
+{
+ size_t n;
+ unsigned char c[1],d[1];
+
+ assert(in && out && key && ivec && num);
+ assert(*num == 0);
+
+ memset(out,0,(bits+7)/8);
+ 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 << (7-n%8)))|((d[0]&0x80) >> (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, block_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);
+}
+
--- /dev/null
+/* ====================================================================
+ * 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 <stddef.h>
+#include <string.h>
+
+#ifndef MODES_DEBUG
+# ifndef NDEBUG
+# define NDEBUG
+# endif
+#endif
+#include <assert.h>
+
+#include "modes.h"
+
+typedef unsigned int u32;
+typedef unsigned char u8;
+
+# define GETU32(pt) (((u32)(pt)[0] << 24) ^ ((u32)(pt)[1] << 16) ^ ((u32)(pt)[2] << 8) ^ ((u32)(pt)[3]))
+# define PUTU32(ct, st) { (ct)[0] = (u8)((st) >> 24); (ct)[1] = (u8)((st) >> 16); (ct)[2] = (u8)((st) >> 8); (ct)[3] = (u8)(st); }
+
+#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 c,n=16;
+
+ do {
+ n -= 4;
+ c = GETU32(counter+n);
+ ++c; c &= 0xFFFFFFFF;
+ PUTU32(counter + n, c);
+ if (c) return;
+ } while (n);
+}
+
+#if !defined(OPENSSL_SMALL_FOORPRINT)
+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, block_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=0; 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;
+}
--- /dev/null
+typedef void (*block_f)(const unsigned char in[16],
+ unsigned char out[16],
+ const void *key);
+
+void CRYPTO_cbc128_encrypt(const unsigned char *in, unsigned char *out,
+ size_t len, const void *key,
+ unsigned char ivec[16], block_f block);
+void CRYPTO_cbc128_decrypt(const unsigned char *in, unsigned char *out,
+ size_t len, const void *key,
+ unsigned char ivec[16], block_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, block_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,
+ block_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, block_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, block_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, block_f block);
+
--- /dev/null
+/* ====================================================================
+ * 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 <stddef.h>
+#include <string.h>
+
+#ifndef MODES_DEBUG
+# ifndef NDEBUG
+# define NDEBUG
+# endif
+#endif
+#include <assert.h>
+
+#include "modes.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,
+ block_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=0; 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;
+}
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