Camellia cipher, contributed by NTT

Submitted by: Masashi Fujita
Reviewed by: Bodo Moeller

1 files changed, 143 insertions, 0 deletions

diff --git a/crypto/camellia/cmll_cbc.c b/crypto/camellia/cmll_cbc.c
new file mode 100644
index 0000000000..545e6c1f41
--- /dev/null
+++ b/crypto/camellia/cmll_cbc.c
@@ -0,0 +1,143 @@
+/* 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);
+			}
+		}
+	}