* LEGAL, ext/Setup*, ext/digest/*: Merge from 1.7: Import digest

  modules.

* ext/md5/*: Move to ext/digest/md5.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_6@1694 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

14 files changed, 25 insertions, 656 deletions

diff --git a/ext/Setup b/ext/Setup
index 039747115f..cc412e8667 100644
--- a/ext/Setup
+++ b/ext/Setup
@@ -3,10 +3,14 @@
 #GD
 #curses
 #dbm
+#digest
+#digest/md5
+#digest/rmd160
+#digest/sha1
+#digest/sha2
 #etc
 #fcntl
 #kconv
-#md5
 #pty
 #sdbm
 #socket
diff --git a/ext/Setup.dj b/ext/Setup.dj
index 6c955cba1e..3c01afa747 100644
--- a/ext/Setup.dj
+++ b/ext/Setup.dj
@@ -3,12 +3,16 @@ option nodynamic
 #GD
 #curses
 dbm
+digest
+digest/md5
+digest/rmd160
+digest/sha1
+digest/sha2
 gdbm
 #etc
 fcntl
 nkf
 marshal
-md5
 readline
 sdbm
 #socket
diff --git a/ext/Setup.emx b/ext/Setup.emx
index dbb4b7a61c..c85f724d9f 100644
--- a/ext/Setup.emx
+++ b/ext/Setup.emx
@@ -3,10 +3,14 @@ option nodynamic
 #Win32API
 curses
 #dbm
+digest
+digest/md5
+digest/rmd160
+digest/sha1
+digest/sha2
 etc
 fcntl
 #gdbm
-md5
 nkf
 #pty
 #readline
diff --git a/ext/Setup.nt b/ext/Setup.nt
index cd7969bb73..39b9030987 100644
--- a/ext/Setup.nt
+++ b/ext/Setup.nt
@@ -4,12 +4,16 @@
 Win32API
 #curses
 #dbm
+digest
+digest/md5
+digest/rmd160
+digest/sha1
+digest/sha2
 #etc
 fcntl
 #gdbm
 #gtk
 marshal
-md5
 nkf
 #pty
 #readline
diff --git a/ext/Setup.x68 b/ext/Setup.x68
index 25adea2035..25e9544d76 100644
--- a/ext/Setup.x68
+++ b/ext/Setup.x68
@@ -3,10 +3,14 @@ option nodynamic
 #GD
 #curses
 dbm
+digest
+digest/md5
+digest/rmd160
+digest/sha1
+digest/sha2
 #etc
 fcntl
 kconv
 marshal
-md5
 #socket
 #tkutil
diff --git a/ext/md5/.cvsignore b/ext/md5/.cvsignore
deleted file mode 100644
index f3c7a7c5da..0000000000
--- a/ext/md5/.cvsignore
+++ /dev/null
@@ -1 +0,0 @@
-Makefile
diff --git a/ext/md5/MANIFEST b/ext/md5/MANIFEST
deleted file mode 100644
index 51b21eb5a2..0000000000
--- a/ext/md5/MANIFEST
+++ /dev/null
@@ -1,8 +0,0 @@
-MANIFEST
-depend
-extconf.rb
-md5.txt
-md5.txt.ja
-md5.h
-md5c.c
-md5init.c
diff --git a/ext/md5/depend b/ext/md5/depend
deleted file mode 100644
index 14427861f8..0000000000
--- a/ext/md5/depend
+++ /dev/null
@@ -1,2 +0,0 @@
-md5c.o: md5c.c md5.h $(topdir)/config.h
-md5init.o: md5init.c $(hdrdir)/ruby.h $(topdir)/config.h $(hdrdir)/defines.h md5.h
diff --git a/ext/md5/extconf.rb b/ext/md5/extconf.rb
deleted file mode 100644
index a57a976a39..0000000000
--- a/ext/md5/extconf.rb
+++ /dev/null
@@ -1,3 +0,0 @@
-require 'mkmf'
-$CFLAGS += " -DHAVE_CONFIG_H"
-create_makefile('md5')
diff --git a/ext/md5/md5.h b/ext/md5/md5.h
deleted file mode 100644
index 81a6d7ff36..0000000000
--- a/ext/md5/md5.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/* MD5.H - header file for MD5C.C
- */
-
-/* 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.
- */
-
-/* ========== include global.h ========== */
-/* GLOBAL.H - RSAREF types and constants
- */
-
-/* PROTOTYPES should be set to one if and only if the compiler supports
-  function argument prototyping.
-The following makes PROTOTYPES default to 0 if it has not already
-  been defined with C compiler flags.
- */
-#ifdef HAVE_PROTOTYPES
-#define PROTOTYPES 1
-#endif
-#ifndef PROTOTYPES
-#define PROTOTYPES 0
-#endif
-
-/* POINTER defines a generic pointer type */
-typedef unsigned char *POINTER;
-
-/* UINT2 defines a two byte word */
-typedef unsigned short int UINT2;
-
-#ifdef HAVE_LIMITS_H
-#include <limits.h>
-#else
-/* Wild guess */
-#define LONG_MAX 2147483647L
-#endif
-
-/* UINT4 defines a four byte word */
-#if defined(INT_MAX) && INT_MAX == 2147483647
-typedef unsigned int UINT4;
-#else
-#if defined(LONG_MAX) && LONG_MAX == 2147483647L
-typedef unsigned long int UINT4;
-#endif
-/* Too bad if neither is */
-#endif
-
-/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
-If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
-  returns an empty list.
- */
-#if PROTOTYPES
-#define PROTO_LIST(list) list
-#else
-#define PROTO_LIST(list) ()
-#endif
-/* ========== End global.h; continue md5.h ========== */
-
-/* MD5 context. */
-typedef struct {
-  UINT4 state[4];                                   /* state (ABCD) */
-  UINT4 count[2];        /* number of bits, modulo 2^64 (lsb first) */
-  unsigned char buffer[64];                         /* input buffer */
-} MD5_CTX;
-
-void MD5Init PROTO_LIST ((MD5_CTX *));
-void MD5Update PROTO_LIST
-  ((MD5_CTX *, unsigned char *, unsigned int));
-void MD5Final PROTO_LIST ((unsigned char [16], MD5_CTX *));
diff --git a/ext/md5/md5.txt b/ext/md5/md5.txt
deleted file mode 100644
index 3fb55be1ea..0000000000
--- a/ext/md5/md5.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-.\" md5.txt -  -*- Indented-Text -*- created at: Fri Aug  2 12:01:27 JST 1996
-
-** MD5(Class)
-
-A class to implement MD5 Message-Digest Algorithm by RSA Data
-Security, Inc., described in RFC1321.
-
-Superclass: Object
-
-Class Methods:
-
-   new([str])
-   md5([str])
-
-	Creates a new MD5 object.  If a string argument is given, it
-        is added to the object. (see update.)
-
-Methods:
-
-   clone
-
-	Copies the MD5 object.
-
-   digest
-
-	Returns the MD5 hash of the added strings as a string of 16
-	bytes.
-
-   hexdigest
-
-	Returns the MD5 hash of the added strings as a string of 32
-	hexadecimal digits.  This method is equal to:
-
-	def hexdigest
-	  ret = ''
-	  digest.each_byte {|i| ret << sprintf('%02x', i) }
-	  ret
-	end
-
-   update(str)
-
-	Update the MD5 object with the string str.  Repeated calls are
-	equivalent to a single call with the concatenation of all the
-	arguments, i.e. m.update(a); m.update(b) is equivalent to
-	m.update(a+b).
-
--------------------------------------------------------
-Local variables:
-fill-column: 70
-end:
diff --git a/ext/md5/md5.txt.ja b/ext/md5/md5.txt.ja
deleted file mode 100644
index 44c64d57c5..0000000000
--- a/ext/md5/md5.txt.ja
+++ /dev/null
@@ -1,50 +0,0 @@
-.\" md5.txt.ja -  -*- Indented-Text -*- created at: Fri Aug  2 12:01:27 JST 1996
-
-** MD5(クラス)
-
-RFC1321に記述されているRSA Data Security, Inc. の MD5 Message-Digest
-Algorithmを実装するクラス。
-
-Superclass: Object
-
-Class Methods:
-
-   new([str])
-   md5([str])
-
-        新しいMD5オブジェクトを生成する．文字列引数が与えられるとそれ
-        を追加する(see update)。
-
-Methods:
-
-   clone
-
-	MD5オブジェクトの複製を作る。
-
-   digest
-
-        今までに追加した文字列に対するハッシュ値を16バイト長の文字列で
-        返す。
-
-   hexdigest
-
-        今までに追加した文字列に対するハッシュ値を、ASCIIコードを使って
-	16進数の列を示す'fe5c2235f48d2bcc911afabea23cd5aa'のような32文字
-	の文字列にエンコードして返す。Rubyで書くと以下と同じ。
-
-	def hexdigest
-  	  ret = ''
-	  digest.each_byte {|i| ret << sprintf('%02x', i) }
-	  ret
-	end
-
-   update(str)
-
-        MD5オブジェクトに文字列を追加する。複数回updateを呼ぶことは文
-        字列を連結してupdateを呼ぶことと等しい。すなわち m.update(a);
-	m.update(b) は m.update(a+b) と等価である。
-
--------------------------------------------------------
-Local variables:
-fill-column: 70
-end:
diff --git a/ext/md5/md5c.c b/ext/md5/md5c.c
deleted file mode 100644
index d7c7e4fb27..0000000000
--- a/ext/md5/md5c.c
+++ /dev/null
@@ -1,337 +0,0 @@
-/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
- */
-
-/* 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include "md5.h"
-
-/* Constants for MD5Transform routine.
- */
-
-#define S11 7
-#define S12 12
-#define S13 17
-#define S14 22
-#define S21 5
-#define S22 9
-#define S23 14
-#define S24 20
-#define S31 4
-#define S32 11
-#define S33 16
-#define S34 23
-#define S41 6
-#define S42 10
-#define S43 15
-#define S44 21
-
-static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
-static void Encode PROTO_LIST
-  ((unsigned char *, UINT4 *, unsigned int));
-static void Decode PROTO_LIST
-  ((UINT4 *, unsigned char *, unsigned int));
-static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
-static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
-
-static unsigned char PADDING[64] = {
-  0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
-};
-
-/* F, G, H and I are basic MD5 functions.
- */
-#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
-#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
-#define H(x, y, z) ((x) ^ (y) ^ (z))
-#define I(x, y, z) ((y) ^ ((x) | (~z)))
-
-/* ROTATE_LEFT rotates x left n bits.
- */
-#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
-
-/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
-Rotation is separate from addition to prevent recomputation.
- */
-#define FF(a, b, c, d, x, s, ac) { \
- (a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
-  }
-#define GG(a, b, c, d, x, s, ac) { \
- (a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
-  }
-#define HH(a, b, c, d, x, s, ac) { \
- (a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
-  }
-#define II(a, b, c, d, x, s, ac) { \
- (a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
-  }
-
-/* MD5 initialization. Begins an MD5 operation, writing a new context.
- */
-void MD5Init (context)
-MD5_CTX *context;                                        /* context */
-{
-  context->count[0] = context->count[1] = 0;
-  /* Load magic initialization constants.
-*/
-  context->state[0] = 0x67452301;
-  context->state[1] = 0xefcdab89;
-  context->state[2] = 0x98badcfe;
-  context->state[3] = 0x10325476;
-}
-
-/* MD5 block update operation. Continues an MD5 message-digest
-  operation, processing another message block, and updating the
-  context.
- */
-void MD5Update (context, input, inputLen)
-MD5_CTX *context;                                        /* context */
-unsigned char *input;                                /* input block */
-unsigned int inputLen;                     /* length of input block */
-{
-  unsigned int i, index, partLen;
-
-  /* Compute number of bytes mod 64 */
-  index = (unsigned int)((context->count[0] >> 3) & 0x3F);
-
-  /* Update number of bits */
-  if ((context->count[0] += ((UINT4)inputLen << 3))
-   < ((UINT4)inputLen << 3))
- context->count[1]++;
-  context->count[1] += ((UINT4)inputLen >> 29);
-
-  partLen = 64 - index;
-
-  /* Transform as many times as possible.
-*/
-  if (inputLen >= partLen) {
- MD5_memcpy
-   ((POINTER)&context->buffer[index], (POINTER)input, partLen);
- MD5Transform (context->state, context->buffer);
-
- for (i = partLen; i + 63 < inputLen; i += 64)
-   MD5Transform (context->state, &input[i]);
-
- index = 0;
-  }
-  else
- i = 0;
-
-  /* Buffer remaining input */
-  MD5_memcpy
- ((POINTER)&context->buffer[index], (POINTER)&input[i],
-  inputLen-i);
-}
-
-/* MD5 finalization. Ends an MD5 message-digest operation, writing the
-  the message digest and zeroizing the context.
- */
-void MD5Final (digest, context)
-unsigned char digest[16];                         /* message digest */
-MD5_CTX *context;                                       /* context */
-{
-  unsigned char bits[8];
-  unsigned int index, padLen;
-
-  /* Save number of bits */
-  Encode (bits, context->count, 8);
-
-  /* Pad out to 56 mod 64.
-*/
-  index = (unsigned int)((context->count[0] >> 3) & 0x3f);
-  padLen = (index < 56) ? (56 - index) : (120 - index);
-  MD5Update (context, PADDING, padLen);
-
-  /* Append length (before padding) */
-  MD5Update (context, bits, 8);
-
-  /* Store state in digest */
-  Encode (digest, context->state, 16);
-
-  /* Zeroize sensitive information.
-*/
-  MD5_memset ((POINTER)context, 0, sizeof (*context));
-}
-
-/* MD5 basic transformation. Transforms state based on block.
- */
-static void MD5Transform (state, block)
-UINT4 state[4];
-unsigned char block[64];
-{
-  UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
-
-  Decode (x, block, 64);
-
-  /* Round 1 */
-  FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
-  FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
-  FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
-  FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
-  FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
-  FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
-  FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
-  FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
-  FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
-  FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
-  FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
-  FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
-  FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
-  FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
-  FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
-  FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
-
- /* Round 2 */
-  GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
-  GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
-  GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
-  GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
-  GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
-  GG (d, a, b, c, x[10], S22,  0x2441453); /* 22 */
-  GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
-  GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
-  GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
-  GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
-  GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
-  GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
-  GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
-  GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
-  GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
-  GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
-
-  /* Round 3 */
-  HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
-  HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
-  HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
-  HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
-  HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
-  HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
-  HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
-  HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
-  HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
-  HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
-  HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
-  HH (b, c, d, a, x[ 6], S34,  0x4881d05); /* 44 */
-  HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
-  HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
-  HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
-  HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
-
-  /* Round 4 */
-  II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
-  II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
-  II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
-  II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
-  II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
-  II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
-  II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
-  II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
-  II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
-  II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
-  II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
-  II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
-  II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
-  II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
-  II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
-  II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
-
-  state[0] += a;
-  state[1] += b;
-  state[2] += c;
-  state[3] += d;
-
-  /* Zeroize sensitive information.
-*/
-  MD5_memset ((POINTER)x, 0, sizeof (x));
-}
-
-/* Encodes input (UINT4) into output (unsigned char). Assumes len is
-  a multiple of 4.
- */
-static void Encode (output, input, len)
-unsigned char *output;
-UINT4 *input;
-unsigned int len;
-{
-  unsigned int i, j;
-
-  for (i = 0, j = 0; j < len; i++, j += 4) {
- output[j] = (unsigned char)(input[i] & 0xff);
- output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
- output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
- output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
-  }
-}
-
-/* Decodes input (unsigned char) into output (UINT4). Assumes len is
-  a multiple of 4.
- */
-static void Decode (output, input, len)
-UINT4 *output;
-unsigned char *input;
-unsigned int len;
-{
-  unsigned int i, j;
-
-  for (i = 0, j = 0; j < len; i++, j += 4)
- output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) |
-   (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
-}
-
-/* Note: Replace "for loop" with standard memcpy if possible.
- */
-
-static void MD5_memcpy (output, input, len)
-POINTER output;
-POINTER input;
-unsigned int len;
-{
-  unsigned int i;
-
-  for (i = 0; i < len; i++)
- output[i] = input[i];
-}
-
-/* Note: Replace "for loop" with standard memset if possible.
- */
-static void MD5_memset (output, value, len)
-POINTER output;
-int value;
-unsigned int len;
-{
-  unsigned int i;
-
-  for (i = 0; i < len; i++)
- ((char *)output)[i] = (char)value;
-}
diff --git a/ext/md5/md5init.c b/ext/md5/md5init.c
deleted file mode 100644
index a57d5f8f30..0000000000
--- a/ext/md5/md5init.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/************************************************
-
-  md5init.c -
-
-  $Author$
-  created at: Fri Aug  2 09:24:12 JST 1996
-
-  Copyright (C) 1995-1998 Yukihiro Matsumoto
-
-************************************************/
-/* This module provides an interface to the RSA Data Security,
-   Inc. MD5 Message-Digest Algorithm, described in RFC 1321.
-   It requires the files md5c.c and md5.h (which are slightly changed
-   from the versions in the RFC to avoid the "global.h" file.) */
-
-#include "ruby.h"
-#include "md5.h"
-
-static VALUE cMD5;
-
-static VALUE
-md5_update(obj, str)
-    VALUE obj;
-    struct RString *str;
-{
-    MD5_CTX *md5;
-
-    Check_Type(str, T_STRING);
-    Data_Get_Struct(obj, MD5_CTX, md5);
-    MD5Update(md5, str->ptr, str->len);
-
-    return obj;
-}
-
-static VALUE
-md5_digest(obj)
-    VALUE obj;
-{
-    MD5_CTX *md5, ctx;
-    unsigned char digest[16];
-
-    Data_Get_Struct(obj, MD5_CTX, md5);
-    ctx = *md5;
-    MD5Final(digest, &ctx);
-
-    return rb_str_new(digest, 16);
-}
-
-static VALUE
-md5_hexdigest(obj)
-    VALUE obj;
-{
-    MD5_CTX *md5, ctx;
-    unsigned char digest[16];
-    char buf[33];
-    int i;
-
-    Data_Get_Struct(obj, MD5_CTX, md5);
-    ctx = *md5;
-    MD5Final(digest, &ctx);
-
-    for (i=0; i<16; i++) {
-	sprintf(buf+i*2, "%02x", digest[i]);
-    }
-    return rb_str_new(buf, 32);
-}
-
-static VALUE
-md5_clone(obj)
-    VALUE obj;
-{
-    MD5_CTX *md5, *md5_new;
-
-    Data_Get_Struct(obj, MD5_CTX, md5);
-    obj = Data_Make_Struct(CLASS_OF(obj), MD5_CTX, 0, free, md5_new);
-    *md5_new = *md5;
-
-    return obj;
-}
-
-static VALUE
-md5_new(argc, argv, class)
-    int argc;
-    VALUE* argv;
-    VALUE class;
-{
-    VALUE arg, obj;
-    MD5_CTX *md5;
-
-    rb_scan_args(argc, argv, "01", &arg);
-    if (!NIL_P(arg)) Check_Type(arg, T_STRING);
-
-    obj = Data_Make_Struct(class, MD5_CTX, 0, free, md5);
-    MD5Init(md5);
-    if (!NIL_P(arg)) {
-	md5_update(obj, arg);
-    }
-
-    return obj;
-}
-
-void
-Init_md5()
-{
-    cMD5 = rb_define_class("MD5", rb_cObject);
-
-    rb_define_singleton_method(cMD5, "new", md5_new, -1);
-    rb_define_singleton_method(cMD5, "md5", md5_new, -1);
-
-    rb_define_method(cMD5, "update", md5_update, 1);
-    rb_define_method(cMD5, "digest", md5_digest, 0);
-    rb_define_method(cMD5, "hexdigest", md5_hexdigest, 0);
-    rb_define_method(cMD5, "clone",  md5_clone, 0);
-}