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openssl/crypto/camellia/cmll_cfb.c

Index: openssl/crypto/camellia/cmll_cfb.c
===================================================================
--- openssl/crypto/camellia/cmll_cfb.c	(revision 105093)
+++ openssl/crypto/camellia/cmll_cfb.c	(working copy)
@@ -105,17 +105,8 @@
  * [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"
+#include <openssl/modes.h>
 
 
 /* The input and output encrypted as though 128bit cfb mode is being
@@ -124,112 +115,25 @@
  */
 
 void Camellia_cfb128_encrypt(const unsigned char *in, unsigned char *out,
-	const unsigned long length, const CAMELLIA_KEY *key,
+	size_t 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;
+	CRYPTO_cfb128_encrypt(in,out,length,key,ivec,num,enc,(block128_f)Camellia_encrypt);
 	}
 
-/* 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,
+	size_t 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));
-		}
+	CRYPTO_cfb128_1_encrypt(in,out,length,key,ivec,num,enc,(block128_f)Camellia_encrypt);
 	}
 
 void Camellia_cfb8_encrypt(const unsigned char *in, unsigned char *out,
-	const unsigned long length, const CAMELLIA_KEY *key,
+	size_t 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);
+	CRYPTO_cfb128_8_encrypt(in,out,length,key,ivec,num,enc,(block128_f)Camellia_encrypt);
 	}