Camellia cipher, contributed by NTT

#

# crypto/camellia/Makefile

#

DIR= camellia

TOP=	../..

CC=	cc

CPP=	$(CC) -E

INCLUDES=

CFLAG=-g

MAKEFILE=	Makefile

AR=		ar r

CAMELLIA_ASM_OBJ=

CFLAGS= $(INCLUDES) $(CFLAG)

ASFLAGS= $(INCLUDES) $(ASFLAG)

AFLAGS= $(ASFLAGS)

GENERAL=Makefile

#TEST=camelliatest.c

APPS=

LIB=$(TOP)/libcrypto.a

LIBSRC=camellia.c cmll_misc.c cmll_ecb.c cmll_cbc.c cmll_ofb.c \

	   cmll_cfb.c cmll_ctr.c 

LIBOBJ= camellia.o cmll_misc.o cmll_ecb.o cmll_cbc.o cmll_ofb.o \

		cmll_cfb.o cmll_ctr.o $(CAMELLIA_ASM_OBJ)

SRC= $(LIBSRC)

EXHEADER= camellia.h

HEADER= cmll_locl.h $(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

$(LIBOBJ): $(LIBSRC)

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 *.s *.o *.obj lib tags core .pure .nfs* *.old *.bak fluff

# DO NOT DELETE THIS LINE -- make depend depends on it.

camellia.o: ../../include/openssl/opensslconf.h camellia.c camellia.h

camellia.o: cmll_locl.h

cmll_cbc.o: ../../include/openssl/camellia.h

cmll_cbc.o: ../../include/openssl/opensslconf.h cmll_cbc.c cmll_locl.h

cmll_cfb.o: ../../e_os.h ../../include/openssl/camellia.h

cmll_cfb.o: ../../include/openssl/e_os2.h ../../include/openssl/opensslconf.h

cmll_cfb.o: cmll_cfb.c cmll_locl.h

cmll_ctr.o: ../../include/openssl/camellia.h

cmll_ctr.o: ../../include/openssl/opensslconf.h cmll_ctr.c cmll_locl.h

cmll_ecb.o: ../../include/openssl/camellia.h

cmll_ecb.o: ../../include/openssl/opensslconf.h cmll_ecb.c cmll_locl.h

cmll_misc.o: ../../include/openssl/camellia.h

cmll_misc.o: ../../include/openssl/opensslconf.h

cmll_misc.o: ../../include/openssl/opensslv.h cmll_locl.h cmll_misc.c

cmll_ofb.o: ../../include/openssl/camellia.h

cmll_ofb.o: ../../include/openssl/opensslconf.h cmll_locl.h cmll_ofb.c

/* crypto/camellia/camellia.h -*- 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 HEADER_CAMELLIA_H

#define HEADER_CAMELLIA_H

#include <openssl/opensslconf.h>

#ifdef OPENSSL_NO_CAMELLIA

#error CAMELLIA is disabled.

#endif

#define CAMELLIA_ENCRYPT	1

#define CAMELLIA_DECRYPT	0

/* Because array size can't be a const in C, the following two are macros.

   Both sizes are in bytes. */

#ifdef  __cplusplus

extern "C" {

#endif

/* This should be a hidden type, but EVP requires that the size be known */

#define CAMELLIA_BLOCK_SIZE 16

#define CAMELLIA_TABLE_BYTE_LEN 272

#define CAMELLIA_TABLE_WORD_LEN (CAMELLIA_TABLE_BYTE_LEN / 4)

typedef unsigned int KEY_TABLE_TYPE[CAMELLIA_TABLE_WORD_LEN]; /* to match with WORD */

struct camellia_key_st 

	{

	KEY_TABLE_TYPE rd_key;

	int bitLength;

	};

typedef struct camellia_key_st CAMELLIA_KEY;

int Camellia_set_key(const unsigned char *userKey, const int bits,

	CAMELLIA_KEY *key);

void Camellia_encrypt(const unsigned char *in, unsigned char *out,

	const CAMELLIA_KEY *key);

void Camellia_decrypt(const unsigned char *in, unsigned char *out,

	const CAMELLIA_KEY *key);

void Camellia_ecb_encrypt(const unsigned char *in, unsigned char *out,

	const CAMELLIA_KEY *key, const int enc);

void Camellia_cbc_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const CAMELLIA_KEY *key,

	unsigned char *ivec, const int enc);

void Camellia_cfb128_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const CAMELLIA_KEY *key,

	unsigned char *ivec, int *num, const int enc);

void Camellia_cfb1_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const CAMELLIA_KEY *key,

	unsigned char *ivec, int *num, const int enc);

void Camellia_cfb8_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const CAMELLIA_KEY *key,

	unsigned char *ivec, int *num, const int enc);

void Camellia_cfbr_encrypt_block(const unsigned char *in,unsigned char *out,

	const int nbits,const CAMELLIA_KEY *key,

	unsigned char *ivec,const int enc);

void Camellia_ofb128_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const CAMELLIA_KEY *key,

	unsigned char *ivec, int *num);

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);

#ifdef  __cplusplus

}

#endif

#endif /* !HEADER_Camellia_H */

/* crypto/camellia/camellia_cbc.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 <string.h>

#include <openssl/camellia.h>

#include "cmll_locl.h"

void Camellia_cbc_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const CAMELLIA_KEY *key,

	unsigned char *ivec, const int enc) 

	{

	unsigned long n;

	unsigned long len = length;

	unsigned char tmp[CAMELLIA_BLOCK_SIZE];

	const unsigned char *iv = ivec;

	assert(in && out && key && ivec);

	assert((CAMELLIA_ENCRYPT == enc)||(CAMELLIA_DECRYPT == enc));

	if (CAMELLIA_ENCRYPT == enc) 

		{

		while (len >= CAMELLIA_BLOCK_SIZE) 

			{

			for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n)

				out[n] = in[n] ^ iv[n];

			Camellia_encrypt(out, out, key);

			iv = out;

			len -= CAMELLIA_BLOCK_SIZE;

			in += CAMELLIA_BLOCK_SIZE;

			out += CAMELLIA_BLOCK_SIZE;

			}

		if (len) 

			{

			for(n=0; n < len; ++n)

				out[n] = in[n] ^ iv[n];

			for(n=len; n < CAMELLIA_BLOCK_SIZE; ++n)

				out[n] = iv[n];

			Camellia_encrypt(out, out, key);

			iv = out;

			}

		memcpy(ivec,iv,CAMELLIA_BLOCK_SIZE);

		} 

	else if (in != out) 

		{

		while (len >= CAMELLIA_BLOCK_SIZE) 

			{

			Camellia_decrypt(in, out, key);

			for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n)

				out[n] ^= iv[n];

			iv = in;

			len -= CAMELLIA_BLOCK_SIZE;

			in  += CAMELLIA_BLOCK_SIZE;

			out += CAMELLIA_BLOCK_SIZE;

			}

		if (len) 

			{

			Camellia_decrypt(in,tmp,key);

			for(n=0; n < len; ++n)

				out[n] = tmp[n] ^ iv[n];

			iv = in;

			}

		memcpy(ivec,iv,CAMELLIA_BLOCK_SIZE);

		} 

	else 

		{

		while (len >= CAMELLIA_BLOCK_SIZE) 

			{

			memcpy(tmp, in, CAMELLIA_BLOCK_SIZE);

			Camellia_decrypt(in, out, key);

			for(n=0; n < CAMELLIA_BLOCK_SIZE; ++n)

				out[n] ^= ivec[n];

			memcpy(ivec, tmp, CAMELLIA_BLOCK_SIZE);

			len -= CAMELLIA_BLOCK_SIZE;

			in += CAMELLIA_BLOCK_SIZE;

			out += CAMELLIA_BLOCK_SIZE;

			}

		if (len)

			{

			memcpy(tmp, in, CAMELLIA_BLOCK_SIZE);

			Camellia_decrypt(tmp, out, key);

			for(n=0; n < len; ++n)

				out[n] ^= ivec[n];

			for(n=len; n < CAMELLIA_BLOCK_SIZE; ++n)

				out[n] = tmp[n];

			memcpy(ivec, tmp, CAMELLIA_BLOCK_SIZE);

			}

		}

	}

/* crypto/camellia/camellia_cfb.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.

 * ====================================================================

 *

 */

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 * 

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 * 

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 * 

 * 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 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 acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from 

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 * 

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

 * ANY EXPRESS 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 AUTHOR OR 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.

 * 

 * The licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

#ifndef CAMELLIA_DEBUG

# ifndef NDEBUG

#  define NDEBUG

# endif

#endif

#include <assert.h>

#include <string.h>

#include <openssl/camellia.h>

#include "cmll_locl.h"

#include "e_os.h"

/* 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 Camellia_cfb128_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const CAMELLIA_KEY *key,

	unsigned char *ivec, int *num, const int enc)

	{

	unsigned int n;

	unsigned long l = length;

	unsigned char c;

	assert(in && out && key && ivec && num);

	n = *num;

	if (enc) 

		{

		while (l--) 

			{

			if (n == 0) 

				{

				Camellia_encrypt(ivec, ivec, key);

				}

			ivec[n] = *(out++) = *(in++) ^ ivec[n];

			n = (n+1) % CAMELLIA_BLOCK_SIZE;

			}

		} 

	else 

		{

		while (l--) 

			{

			if (n == 0) 

				{

				Camellia_encrypt(ivec, ivec, key);

				}

			c = *(in);

			*(out++) = *(in++) ^ ivec[n];

			ivec[n] = c;

			n = (n+1) % CAMELLIA_BLOCK_SIZE;

			}

		}

	*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 */

void Camellia_cfbr_encrypt_block(const unsigned char *in,unsigned char *out,

	const int nbits,const CAMELLIA_KEY *key,

	unsigned char *ivec,const int enc)

	{

	int n,rem,num;

	unsigned char ovec[CAMELLIA_BLOCK_SIZE*2];

	if (nbits<=0 || nbits>128) return;

	/* fill in the first half of the new IV with the current IV */

	memcpy(ovec,ivec,CAMELLIA_BLOCK_SIZE);

	/* construct the new IV */

	Camellia_encrypt(ivec,ivec,key);

	num = (nbits+7)/8;

	if (enc)	/* encrypt the input */

		for(n=0 ; n < num ; ++n)

			out[n] = (ovec[CAMELLIA_BLOCK_SIZE+n] = in[n] ^ ivec[n]);

	else		/* decrypt the input */

		for(n=0 ; n < num ; ++n)

			out[n] = (ovec[CAMELLIA_BLOCK_SIZE+n] = in[n]) ^ ivec[n];

	/* shift ovec left... */

	rem = nbits%8;

	num = nbits/8;

	if(rem==0)

		memcpy(ivec,ovec+num,CAMELLIA_BLOCK_SIZE);

	else

		for(n=0 ; n < CAMELLIA_BLOCK_SIZE ; ++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 Camellia_cfb1_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const CAMELLIA_KEY *key,

	unsigned char *ivec, int *num, const int enc)

	{

	unsigned int n;

	unsigned char c[1],d[1];

	assert(in && out && key && ivec && num);

	assert(*num == 0);

	memset(out,0,(length+7)/8);

	for(n=0 ; n < length ; ++n)

		{

		c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;

		Camellia_cfbr_encrypt_block(c,d,1,key,ivec,enc);

		out[n/8]=(out[n/8]&~(1 << (7-n%8)))|((d[0]&0x80) >> (n%8));

		}

	}

void Camellia_cfb8_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const CAMELLIA_KEY *key,

	unsigned char *ivec, int *num, const int enc)

	{

	unsigned int n;

	assert(in && out && key && ivec && num);

	assert(*num == 0);

	for(n=0 ; n < length ; ++n)

		Camellia_cfbr_encrypt_block(&in[n],&out[n],8,key,ivec,enc);

	}