- Add l2tp_mtu configuration option, used to define MRU, MSS.

[l2tpns.git] / md5.c

diff --git a/md5.c b/md5.c
index 59c87be..9abecfb 100644 (file)
--- a/md5.c
+++ b/md5.c
@@ -1,296 +1,274 @@
-/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
+/*
+ * This is an OpenSSL-compatible implementation of the RSA Data Security,
+ * Inc. MD5 Message-Digest Algorithm.
+ *
+ * Written by Solar Designer <solar at openwall.com> in 2001, and placed
+ * in the public domain.  There's absolutely no warranty.
+ *
+ * This differs from Colin Plumb's older public domain implementation in
+ * that no 32-bit integer data type is required, there's no compile-time
+ * endianness configuration, and the function prototypes match OpenSSL's.
+ * The primary goals are portability and ease of use.
+ *
+ * This implementation is meant to be fast, but not as fast as possible.
+ * Some known optimizations are not included to reduce source code size
+ * and avoid compile-time configuration.

  */
 
  */
 

-char const *cvs_id_md5 = "$Id: md5.c,v 1.3 2004-08-13 00:02:50 fred_nerk Exp $";
-
-/* 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 HAVE_OPENSSL

 
 #include <string.h>
 
 #include <string.h>

-#include "md5.h"

 
 

-/* Constants for MD5Transform routine.
- */
+#include "md5.h"

 
 

-#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 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.
+/*
+ * The basic MD5 functions.
+ *
+ * F is optimized compared to its RFC 1321 definition just like in Colin
+ * Plumb's implementation.

  */
  */

-#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)))
+#define F(x, y, z)                     ((z) ^ ((x) & ((y) ^ (z))))
+#define G(x, y, z)                     ((y) ^ ((z) & ((x) ^ (y))))
+#define H(x, y, z)                     ((x) ^ (y) ^ (z))
+#define I(x, y, z)                     ((y) ^ ((x) | ~(z)))

 
 

-/* ROTATE_LEFT rotates x left n bits.
+/*
+ * The MD5 transformation for all four rounds.

  */
  */

-#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 STEP(f, a, b, c, d, x, t, s) \
+       (a) += f((b), (c), (d)) + (x) + (t); \
+       (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \
+       (a) += (b);
+
+/*
+ * SET reads 4 input bytes in little-endian byte order and stores them
+ * in a properly aligned word in host byte order.
+ *
+ * The check for little-endian architectures which tolerate unaligned
+ * memory accesses is just an optimization.  Nothing will break if it
+ * doesn't work.

  */
  */

-#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.
+#if defined(__i386__) || defined(__vax__)
+#define SET(n) \
+       (*(MD5_u32plus *)&ptr[(n) * 4])
+#define GET(n) \
+       SET(n)
+#else
+#define SET(n) \
+       (ctx->block[(n)] = \
+       (MD5_u32plus)ptr[(n) * 4] | \
+       ((MD5_u32plus)ptr[(n) * 4 + 1] << 8) | \
+       ((MD5_u32plus)ptr[(n) * 4 + 2] << 16) | \
+       ((MD5_u32plus)ptr[(n) * 4 + 3] << 24))
+#define GET(n) \
+       (ctx->block[(n)])
+#endif
+
+/*
+ * This processes one or more 64-byte data blocks, but does NOT update
+ * the bit counters.  There're no alignment requirements.

  */
  */

-void MD5Init(MD5_CTX *context)
+static void *body(MD5_CTX *ctx, void *data, unsigned long size)

 {
 {

-       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;
+       unsigned char *ptr;
+       MD5_u32plus a, b, c, d;
+       MD5_u32plus saved_a, saved_b, saved_c, saved_d;
+
+       ptr = data;
+
+       a = ctx->a;
+       b = ctx->b;
+       c = ctx->c;
+       d = ctx->d;
+
+       do {
+               saved_a = a;
+               saved_b = b;
+               saved_c = c;
+               saved_d = d;
+
+/* Round 1 */
+               STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7)
+               STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12)
+               STEP(F, c, d, a, b, SET(2), 0x242070db, 17)
+               STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22)
+               STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7)
+               STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12)
+               STEP(F, c, d, a, b, SET(6), 0xa8304613, 17)
+               STEP(F, b, c, d, a, SET(7), 0xfd469501, 22)
+               STEP(F, a, b, c, d, SET(8), 0x698098d8, 7)
+               STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12)
+               STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17)
+               STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22)
+               STEP(F, a, b, c, d, SET(12), 0x6b901122, 7)
+               STEP(F, d, a, b, c, SET(13), 0xfd987193, 12)
+               STEP(F, c, d, a, b, SET(14), 0xa679438e, 17)
+               STEP(F, b, c, d, a, SET(15), 0x49b40821, 22)
+
+/* Round 2 */
+               STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5)
+               STEP(G, d, a, b, c, GET(6), 0xc040b340, 9)
+               STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14)
+               STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20)
+               STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5)
+               STEP(G, d, a, b, c, GET(10), 0x02441453, 9)
+               STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14)
+               STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20)
+               STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5)
+               STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9)
+               STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14)
+               STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20)
+               STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5)
+               STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9)
+               STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14)
+               STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20)
+
+/* Round 3 */
+               STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4)
+               STEP(H, d, a, b, c, GET(8), 0x8771f681, 11)
+               STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16)
+               STEP(H, b, c, d, a, GET(14), 0xfde5380c, 23)
+               STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4)
+               STEP(H, d, a, b, c, GET(4), 0x4bdecfa9, 11)
+               STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16)
+               STEP(H, b, c, d, a, GET(10), 0xbebfbc70, 23)
+               STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4)
+               STEP(H, d, a, b, c, GET(0), 0xeaa127fa, 11)
+               STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16)
+               STEP(H, b, c, d, a, GET(6), 0x04881d05, 23)
+               STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4)
+               STEP(H, d, a, b, c, GET(12), 0xe6db99e5, 11)
+               STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16)
+               STEP(H, b, c, d, a, GET(2), 0xc4ac5665, 23)
+
+/* Round 4 */
+               STEP(I, a, b, c, d, GET(0), 0xf4292244, 6)
+               STEP(I, d, a, b, c, GET(7), 0x432aff97, 10)
+               STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15)
+               STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21)
+               STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6)
+               STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10)
+               STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15)
+               STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21)
+               STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6)
+               STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10)
+               STEP(I, c, d, a, b, GET(6), 0xa3014314, 15)
+               STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21)
+               STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6)
+               STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10)
+               STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15)
+               STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21)
+
+               a += saved_a;
+               b += saved_b;
+               c += saved_c;
+               d += saved_d;
+
+               ptr += 64;
+       } while (size -= 64);
+
+       ctx->a = a;
+       ctx->b = b;
+       ctx->c = c;
+       ctx->d = d;
+
+       return ptr;

 }
 
 }
 

-/* MD5 block update operation. Continues an MD5 message-digest
-  operation, processing another message block, and updating the
-  context.
- */
-void MD5Update(MD5_CTX *context, unsigned char *input, unsigned int inputLen)
+void MD5_Init(MD5_CTX *ctx)
+{
+       ctx->a = 0x67452301;
+       ctx->b = 0xefcdab89;
+       ctx->c = 0x98badcfe;
+       ctx->d = 0x10325476;

 
 

+       ctx->lo = 0;
+       ctx->hi = 0;
+}
+
+void MD5_Update(MD5_CTX *ctx, void *data, unsigned long size)

 {
 {

-       unsigned int i,
-       index,
-       partLen;
+       MD5_u32plus saved_lo;
+       unsigned long used, free;

 
 

-       /* Compute number of bytes mod 64 */
-       index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
+       saved_lo = ctx->lo;
+       if ((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo)
+               ctx->hi++;
+       ctx->hi += size >> 29;

 
 

-       /* Update number of bits */
-       if ((context->count[0] += ((UINT4) inputLen << 3)) < ((UINT4) inputLen << 3))
-               context->count[1]++;
-       context->count[1] += ((UINT4) inputLen >> 29);
+       used = saved_lo & 0x3f;

 
 

-       partLen = 64 - index;
+       if (used) {
+               free = 64 - used;

 
 

-       /* Transform as many times as possible.
-        */
-       if (inputLen >= partLen)
-       {
-               memcpy(&context->buffer[index], input, partLen);
-               MD5Transform(context->state, context->buffer);
+               if (size < free) {
+                       memcpy(&ctx->buffer[used], data, size);
+                       return;
+               }

 
 

-               for (i = partLen; i + 63 < inputLen; i += 64)
-                       MD5Transform(context->state, &input[i]);
+               memcpy(&ctx->buffer[used], data, free);
+               data = (unsigned char *)data + free;
+               size -= free;
+               body(ctx, ctx->buffer, 64);
+       }

 
 

-               index = 0;
+       if (size >= 64) {
+               data = body(ctx, data, size & ~(unsigned long)0x3f);
+               size &= 0x3f;

        }
        }

-       else
-               i = 0;

 
 

-       /* Buffer remaining input */
-       memcpy(&context->buffer[index], &input[i], inputLen - i);
+       memcpy(ctx->buffer, data, size);

 }
 
 }
 

-/* MD5 finalization. Ends an MD5 message-digest operation, writing the
-  the message digest and zeroizing the context.
- */
-void MD5Final(unsigned char digest[16], MD5_CTX *context)
+void MD5_Final(unsigned char *result, MD5_CTX *ctx)

 {
 {

-       unsigned char bits[8];
-       unsigned int index, padLen;
-
-       /* Save number of bits */
-       Encode(bits, context->count, 8);
+       unsigned long used, free;

 
 

-       /* 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);
+       used = ctx->lo & 0x3f;

 
 

-       /* Append length (before padding) */
-       MD5Update(context, bits, 8);
+       ctx->buffer[used++] = 0x80;

 
 

-       /* Store state in digest */
-       Encode(digest, context->state, 16);
-
-       /* Zeroize sensitive information.
-        */
-       memset(context, 0, sizeof(*context));
-}
-
-/* MD5 basic transformation. Transforms state based on block.
- */
-static void MD5Transform(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.
-       memset(x, 0, sizeof(x));
-}
+       free = 64 - used;

 
 

-/* Encodes input (UINT4) into output (unsigned char). Assumes len is
-  a multiple of 4.
- */
-static void Encode(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);
+       if (free < 8) {
+               memset(&ctx->buffer[used], 0, free);
+               body(ctx, ctx->buffer, 64);
+               used = 0;
+               free = 64;

        }
        }

-}
-
-/* Decodes input (unsigned char) into output (UINT4). Assumes len is
-  a multiple of 4.
- */
-static void Decode(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);
+       memset(&ctx->buffer[used], 0, free - 8);
+
+       ctx->lo <<= 3;
+       ctx->buffer[56] = ctx->lo;
+       ctx->buffer[57] = ctx->lo >> 8;
+       ctx->buffer[58] = ctx->lo >> 16;
+       ctx->buffer[59] = ctx->lo >> 24;
+       ctx->buffer[60] = ctx->hi;
+       ctx->buffer[61] = ctx->hi >> 8;
+       ctx->buffer[62] = ctx->hi >> 16;
+       ctx->buffer[63] = ctx->hi >> 24;
+
+       body(ctx, ctx->buffer, 64);
+
+       result[0] = ctx->a;
+       result[1] = ctx->a >> 8;
+       result[2] = ctx->a >> 16;
+       result[3] = ctx->a >> 24;
+       result[4] = ctx->b;
+       result[5] = ctx->b >> 8;
+       result[6] = ctx->b >> 16;
+       result[7] = ctx->b >> 24;
+       result[8] = ctx->c;
+       result[9] = ctx->c >> 8;
+       result[10] = ctx->c >> 16;
+       result[11] = ctx->c >> 24;
+       result[12] = ctx->d;
+       result[13] = ctx->d >> 8;
+       result[14] = ctx->d >> 16;
+       result[15] = ctx->d >> 24;
+
+       memset(ctx, 0, sizeof(*ctx));

 }
 
 }
 

+#endif