Initial import

1 files changed, 206 insertions, 0 deletions

diff --git a/openssl/crypto/modes/cbc128.c b/openssl/crypto/modes/cbc128.c
new file mode 100644
index 00000000..8f8bd563
--- /dev/null
+++ b/openssl/crypto/modes/cbc128.c
@@ -0,0 +1,206 @@
+/* ====================================================================
+ * 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 <string.h>
+
+#ifndef MODES_DEBUG
+# ifndef NDEBUG
+#  define NDEBUG
+# endif
+#endif
+#include <assert.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], 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<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], block128_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;
+	}
+}