$NetBSD: patch-ae,v 1.1 2000/12/10 09:43:37 jlam Exp $

--- lib/md5.c.orig	Mon Mar 29 16:26:14 1999
+++ lib/md5.c
@@ -24,327 +24,10 @@
 */
 
 #include <config.h>
-#include "md5global.h"
-#include "md5.h"
+#include <md5.h>
+#include <string.h>
 #include "hmac-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.
-
-        */
-#ifdef I
-/* This might be defined via NANA */
-#undef I
-#endif
-
-#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; 
-}
-
 void hmac_md5_init(HMAC_MD5_CTX *hmac,
 		   const unsigned char *key,
 		   int key_len)
@@ -382,10 +65,10 @@
    */
 
   /* start out by storing key in pads */
-  MD5_memset(k_ipad, '\0', sizeof k_ipad);
-  MD5_memset(k_opad, '\0', sizeof k_opad);
-  MD5_memcpy( k_ipad, key, key_len);
-  MD5_memcpy( k_opad, key, key_len);
+  memset(k_ipad, '\0', sizeof k_ipad);
+  memset(k_opad, '\0', sizeof k_opad);
+  memcpy( k_ipad, key, key_len);
+  memcpy( k_opad, key, key_len);
 
   /* XOR key with ipad and opad values */
   for (i=0; i<64; i++) {
@@ -400,9 +83,9 @@
   MD5Update(&hmac->octx, k_opad, 64);     /* apply outer pad */
 
   /* scrub the pads and key context (if used) */
-  MD5_memset(&k_ipad, 0, sizeof(k_ipad));
-  MD5_memset(&k_opad, 0, sizeof(k_opad));
-  MD5_memset(&tk, 0, sizeof(tk));
+  memset(&k_ipad, 0, sizeof(k_ipad));
+  memset(&k_opad, 0, sizeof(k_opad));
+  memset(&tk, 0, sizeof(tk));
 
   /* and we're done. */
 }
@@ -427,7 +110,7 @@
     state->istate[lupe] = htonl(hmac.ictx.state[lupe]);
     state->ostate[lupe] = htonl(hmac.octx.state[lupe]);
   }
-  MD5_memset(&hmac, 0, sizeof(hmac));
+  memset(&hmac, 0, sizeof(hmac));
 }
 
 
@@ -435,7 +118,7 @@
 		     HMAC_MD5_STATE *state)
 {
   unsigned lupe;
-  MD5_memset(hmac, 0, sizeof(HMAC_MD5_CTX));
+  memset(hmac, 0, sizeof(HMAC_MD5_CTX));
   for (lupe = 0; lupe < 4; lupe++) {
     hmac->ictx.state[lupe] = ntohl(state->istate[lupe]);
     hmac->octx.state[lupe] = ntohl(state->ostate[lupe]);
@@ -497,10 +180,10 @@
    */
 
   /* start out by storing key in pads */
-  MD5_memset(k_ipad, '\0', sizeof k_ipad);
-  MD5_memset(k_opad, '\0', sizeof k_opad);
-  MD5_memcpy( k_ipad, key, key_len);
-  MD5_memcpy( k_opad, key, key_len);
+  memset(k_ipad, '\0', sizeof k_ipad);
+  memset(k_opad, '\0', sizeof k_opad);
+  memcpy( k_ipad, key, key_len);
+  memcpy( k_opad, key, key_len);
 
   /* XOR key with ipad and opad values */
   for (i=0; i<64; i++) {
