Release-1.3.4-20031026

1 files changed, 106 insertions, 0 deletions

diff --git a/libmd5/md5_loc.h b/libmd5/md5_loc.h
new file mode 100644
index 0000000..03aeebf
--- /dev/null
+++ b/libmd5/md5_loc.h
@@ -0,0 +1,106 @@
+/*
+ * Local defines for the md5 functions.
+ *
+ * $Id$
+ */
+
+/*
+ * Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
+ * rights reserved.
+ *
+ * License to copy and use this software is granted provided that it is
+ * identified as the "RSA Data Security, Inc. MD5 Message-Digest
+ * Algorithm" in all material mentioning or referencing this software
+ * or this function.
+ *
+ * License is also granted to make and use derivative works provided that
+ * such works are identified as "derived from the RSA Data Security,
+ * Inc. MD5 Message-Digest Algorithm" in all material mentioning or
+ * referencing the derived work.
+ *
+ * RSA Data Security, Inc. makes no representations concerning either the
+ * merchantability of this software or the suitability of this
+ * software for any particular purpose. It is provided "as is" without
+ * express or implied warranty of any kind.
+ *
+ * These notices must be retained in any copies of any part of this
+ * documentation and/or software.
+ */
+
+#ifndef __MD5_LOC_H__
+#define __MD5_LOC_H__
+
+#define HEX_STRING	"0123456789abcdef"	/* to convert to hex */
+#define BLOCK_SIZE_MASK	(MD5_BLOCK_SIZE - 1)
+
+/*
+ * Define my endian-ness.  Could not do in a portable manner using the
+ * include files -- grumble.
+ */
+#if defined(__alpha) || defined(WIN32) || defined(__i386__)
+/*
+ * little endian
+ */
+#define SWAP(n)	(n)
+#endif
+
+#ifdef __sparc
+/*
+ * big endian - big is better
+ */
+#define SWAP(n)	\
+    (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
+#endif
+
+/*
+ * These are the four functions used in the four steps of the MD5
+ * algorithm and defined in the RFC 1321.  The first function is a
+ * little bit optimized (as found in Colin Plumbs public domain
+ * implementation).
+ */
+/* #define FF(b, c, d) ((b & c) | (~b & d)) */
+#define FF(b, c, d)	(d ^ (b & (c ^ d)))
+#define FG(b, c, d)	FF(d, b, c)
+#define FH(b, c, d)	(b ^ c ^ d)
+#define FI(b, c, d)	(c ^ (b | ~d))
+
+/*
+ * It is unfortunate that C does not provide an operator for cyclic
+ * rotation.  Hope the C compiler is smart enough.  -- Modified to
+ * remove the w = at the front - Gray 2/97
+ */
+#define CYCLIC(w, s)	((w << s) | (w >> (32 - s)))
+
+/*
+ * First Round: using the given function, the context and a constant
+ * the next context is computed.  Because the algorithms processing
+ * unit is a 32-bit word and it is determined to work on words in
+ * little endian byte order we perhaps have to change the byte order
+ * before the computation.  To reduce the work for the next steps we
+ * store the swapped words in the array CORRECT_WORDS. -- Modified to
+ * fix the handling of unaligned buffer spaces - Gray 7/97
+ */
+#define OP1(a, b, c, d, b_p, c_p, s, T)				\
+     do {							\
+       memcpy(c_p, b_p, sizeof(md5_uint32));       		\
+       *c_p = SWAP(*c_p);					\
+       a += FF (b, c, d) + *c_p + T;				\
+       a = CYCLIC (a, s);					\
+       a += b;							\
+       b_p = (char *)b_p + sizeof(md5_uint32);			\
+       c_p++;							\
+    } while (0)
+
+/*
+ * Second to Fourth Round: we have the possibly swapped words in
+ * CORRECT_WORDS.  Redefine the macro to take an additional first
+ * argument specifying the function to use.
+ */
+#define OP234(FUNC, a, b, c, d, k, s, T)		\
+    do { 						\
+      a += FUNC (b, c, d) + k + T;			\
+      a = CYCLIC (a, s);				\
+      a += b;						\
+    } while (0)
+
+#endif /* ! __MD5_LOC_H__ */