466 lines
12 KiB
C
466 lines
12 KiB
C
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//
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// Copyright (c) 1998-1999, Microsoft Corporation, all rights reserved
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//
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// md5.c
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//
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// IEEE1394 ARP module
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//
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//
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// 08/08/2000 ADube created.
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//
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// Purpose: Create a unique MAC address from 1394 EUID
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//
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//This file should use the same algorithm as nic1394 uses.
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//
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// Derived from derived from the RSA Data Security,
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// Inc. MD5 Message-Digest Algorithm
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//
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#include <precomp.h>
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#pragma hdrstop
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/*
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been defined with C compiler flags.
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*/
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#ifndef PROTOTYPES
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#define PROTOTYPES 1
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#endif
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/* POINTER defines a generic pointer type */
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typedef unsigned char *POINTER;
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/* UINT2 defines a two byte word */
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typedef unsigned short int UINT2;
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/* UINT4 defines a four byte word */
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typedef unsigned long int UINT4;
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/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
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If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
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returns an empty list.
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*/
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#if PROTOTYPES
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#define PROTO_LIST(list) list
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#else
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#define PROTO_LIST(list) ()
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#endif
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/* MD5 context. */
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typedef struct _MD5_CTX{
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UINT4 state[4]; /* state (ABCD) */
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UINT4 count[2]; /* number of bits, modulo 2^64 (lsb first) */
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unsigned char buffer[64]; /* input buffer */
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} MD5_CTX, MD_CTX;
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typedef ENetAddr MAC_ADDRESS, *PMAC_ADDRESS;
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void MD5Init PROTO_LIST ((MD5_CTX *));
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void MD5Update PROTO_LIST
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((MD5_CTX *, unsigned char *, unsigned int));
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void MD5Final PROTO_LIST ((unsigned char [16], MD5_CTX *));
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// Constants for MD5Transform routine.
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#define S11 7
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#define S12 12
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#define S13 17
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#define S14 22
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#define S21 5
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#define S22 9
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#define S23 14
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#define S24 20
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#define S31 4
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#define S32 11
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#define S33 16
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#define S34 23
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#define S41 6
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#define S42 10
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#define S43 15
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#define S44 21
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static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
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static void Encode PROTO_LIST
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((unsigned char *, UINT4 *, unsigned int));
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static void Decode PROTO_LIST
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((UINT4 *, unsigned char *, unsigned int));
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static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
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static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
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static unsigned char PADDING[64] = {
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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// F, G, H and I are basic MD5 functions.
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#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
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#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
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#define H(x, y, z) ((x) ^ (y) ^ (z))
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#define I(x, y, z) ((y) ^ ((x) | (~z)))
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// ROTATE_LEFT rotates x left n bits.
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#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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// FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
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// Rotation is separate from addition to prevent recomputation.
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#define FF(a, b, c, d, x, s, ac) { \
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(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define GG(a, b, c, d, x, s, ac) { \
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(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define HH(a, b, c, d, x, s, ac) { \
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(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define II(a, b, c, d, x, s, ac) { \
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(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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// MD5 initialization. Begins an MD5 operation, writing a new context.
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void
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MD5Init (
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MD5_CTX *context// context
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)
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{
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context->count[0] = context->count[1] = 0;
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// Load magic initialization constants.
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context->state[0] = 0x67452301;
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context->state[1] = 0xefcdab89;
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context->state[2] = 0x98badcfe;
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context->state[3] = 0x10325476;
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}
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// MD5 block update operation. Continues an MD5 message-digest
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// operation, processing another message block, and updating the
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// context.
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void
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MD5Update (
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MD5_CTX *context, // context
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unsigned char *input, // input block
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unsigned int inputLen // length of input block
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)
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{
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unsigned int i, index, partLen;
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// Compute number of bytes mod 64
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index = (unsigned int)((context->count[0] >> 3) & 0x3F);
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// Update number of bits
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if ((context->count[0] += ((UINT4)inputLen << 3))
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< ((UINT4)inputLen << 3))
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{
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context->count[1]++;
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}
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context->count[1] += ((UINT4)inputLen >> 29);
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partLen = 64 - index;
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// Transform as many times as possible.
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if (inputLen >= partLen)
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{
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MD5_memcpy ((POINTER)&context->buffer[index],
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(POINTER)input,
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partLen);
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MD5Transform (context->state, context->buffer);
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for (i = partLen; i + 63 < inputLen; i += 64)
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{
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MD5Transform (context->state, &input[i]);
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}
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index = 0;
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}
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else
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{
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i = 0;
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}
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// Buffer remaining input
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MD5_memcpy
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((POINTER)&context->buffer[index], (POINTER)&input[i],
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inputLen-i);
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}
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// MD5 finalization. Ends an MD5 message-digest operation, writing the
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// the message digest and zeroizing the context.
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void
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MD5Final (
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unsigned char digest[16], // message digest
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MD5_CTX *context
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) // context
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{
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unsigned char bits[8];
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unsigned int index, padLen;
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// Save number of bits
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Encode (bits, context->count, 8);
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// Pad out to 56 mod 64.
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index = (unsigned int)((context->count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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MD5Update (context, PADDING, padLen);
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// Append length (before padding)
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MD5Update (context, bits, 8);
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// Store state in digest
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Encode (digest, context->state, 6);
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// Zeroize sensitive information.
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MD5_memset ((POINTER)context, 0, sizeof (*context));
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}
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// MD5 basic transformation. Transforms state based on block.
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static
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void
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MD5Transform (
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UINT4 state[4],
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unsigned char block[64]
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)
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{
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UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
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Decode (x, block, 64);
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// Round 1
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FF (a, b, c, d, x[ 0], S11, 0xd76aa478); // 1
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FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); // 2
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FF (c, d, a, b, x[ 2], S13, 0x242070db); // 3
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FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); // 4
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FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); // 5
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FF (d, a, b, c, x[ 5], S12, 0x4787c62a); // 6
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FF (c, d, a, b, x[ 6], S13, 0xa8304613); // 7
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FF (b, c, d, a, x[ 7], S14, 0xfd469501); // 8
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FF (a, b, c, d, x[ 8], S11, 0x698098d8); // 9
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FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); // 10
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FF (c, d, a, b, x[10], S13, 0xffff5bb1); // 11
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FF (b, c, d, a, x[11], S14, 0x895cd7be); // 12
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FF (a, b, c, d, x[12], S11, 0x6b901122); // 13
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FF (d, a, b, c, x[13], S12, 0xfd987193); // 14
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FF (c, d, a, b, x[14], S13, 0xa679438e); // 15
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FF (b, c, d, a, x[15], S14, 0x49b40821); // 16
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// Round 2
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GG (a, b, c, d, x[ 1], S21, 0xf61e2562); // 17
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GG (d, a, b, c, x[ 6], S22, 0xc040b340); // 18
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GG (c, d, a, b, x[11], S23, 0x265e5a51); // 19
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GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); // 20
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GG (a, b, c, d, x[ 5], S21, 0xd62f105d); // 21
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GG (d, a, b, c, x[10], S22, 0x2441453); // 22
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GG (c, d, a, b, x[15], S23, 0xd8a1e681); // 23
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GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); // 24
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GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); // 25
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GG (d, a, b, c, x[14], S22, 0xc33707d6); // 26
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GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); // 27
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GG (b, c, d, a, x[ 8], S24, 0x455a14ed); // 28
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GG (a, b, c, d, x[13], S21, 0xa9e3e905); // 29
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GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); // 30
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GG (c, d, a, b, x[ 7], S23, 0x676f02d9); // 31
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GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); // 32
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// Round 3
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HH (a, b, c, d, x[ 5], S31, 0xfffa3942); // 33
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HH (d, a, b, c, x[ 8], S32, 0x8771f681); // 34
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HH (c, d, a, b, x[11], S33, 0x6d9d6122); // 35
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HH (b, c, d, a, x[14], S34, 0xfde5380c); // 36
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HH (a, b, c, d, x[ 1], S31, 0xa4beea44); // 37
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HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); // 38
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HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); // 39
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HH (b, c, d, a, x[10], S34, 0xbebfbc70); // 40
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HH (a, b, c, d, x[13], S31, 0x289b7ec6); // 41
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HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); // 42
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HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); // 43
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HH (b, c, d, a, x[ 6], S34, 0x4881d05); // 44
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HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); // 45
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HH (d, a, b, c, x[12], S32, 0xe6db99e5); // 46
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HH (c, d, a, b, x[15], S33, 0x1fa27cf8); // 47
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HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); // 48
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// Round 4
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II (a, b, c, d, x[ 0], S41, 0xf4292244); // 49
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II (d, a, b, c, x[ 7], S42, 0x432aff97); // 50
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II (c, d, a, b, x[14], S43, 0xab9423a7); // 51
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II (b, c, d, a, x[ 5], S44, 0xfc93a039); // 52
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II (a, b, c, d, x[12], S41, 0x655b59c3); // 53
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II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); // 54
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II (c, d, a, b, x[10], S43, 0xffeff47d); // 55
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II (b, c, d, a, x[ 1], S44, 0x85845dd1); // 56
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II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); // 57
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II (d, a, b, c, x[15], S42, 0xfe2ce6e0); // 58
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II (c, d, a, b, x[ 6], S43, 0xa3014314); // 59
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II (b, c, d, a, x[13], S44, 0x4e0811a1); // 60
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II (a, b, c, d, x[ 4], S41, 0xf7537e82); // 61
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II (d, a, b, c, x[11], S42, 0xbd3af235); // 62
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II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); // 63
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II (b, c, d, a, x[ 9], S44, 0xeb86d391); // 64
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state[0] += a;
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state[1] += b;
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state[2] += c;
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state[3] += d;
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// Zeroize sensitive information.
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MD5_memset ((POINTER)x, 0, sizeof (x));
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}
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// Encodes input (UINT4) into output (unsigned char). Assumes len is
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// a multiple of 4.
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|
|
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// 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);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Note: Replace "for loop" with standard memcpy if possible.
|
||
|
|
|
||
|
|
|
||
|
|
static
|
||
|
|
void
|
||
|
|
MD5_memcpy (
|
||
|
|
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 (
|
||
|
|
POINTER output,
|
||
|
|
int value,
|
||
|
|
unsigned int len
|
||
|
|
)
|
||
|
|
{
|
||
|
|
unsigned int i;
|
||
|
|
|
||
|
|
for (i = 0; i < len; i++)
|
||
|
|
{
|
||
|
|
((char *)output)[i] = (char)value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#define ETH_IS_MULTICAST(Address) \
|
||
|
|
(BOOLEAN)(((PUCHAR)(Address))[0] & ((UCHAR)0x01))
|
||
|
|
|
||
|
|
|
||
|
|
VOID
|
||
|
|
nicGetMacAddressFromEuid (
|
||
|
|
UINT64 *pEuid,
|
||
|
|
MAC_ADDRESS *pMacAddr
|
||
|
|
)
|
||
|
|
/*
|
||
|
|
Taken directly from nic1394 and is intended to produce the same output as nic1394.
|
||
|
|
|
||
|
|
This is used to create display Correct HW addr in the arp -a output.
|
||
|
|
|
||
|
|
We take the Unique ID and run it through the MD5 algorithm because this is what
|
||
|
|
nic1394 would have done to get the MAC address that it reports to us
|
||
|
|
|
||
|
|
I have the name as nicGet.. to imply that this should be the same alogorithm as nic1394's md5
|
||
|
|
algorithm
|
||
|
|
|
||
|
|
*/
|
||
|
|
{
|
||
|
|
|
||
|
|
MD_CTX context;
|
||
|
|
unsigned char digest[6];
|
||
|
|
unsigned int len = 8;
|
||
|
|
|
||
|
|
MD5Init (&context);
|
||
|
|
MD5Update (&context, (unsigned char*)pEuid, len);
|
||
|
|
MD5Final (digest, &context);
|
||
|
|
|
||
|
|
NdisMoveMemory (pMacAddr, digest, 6);
|
||
|
|
|
||
|
|
// Set the locally administered bit
|
||
|
|
// and clear the multicast bit.
|
||
|
|
|
||
|
|
//
|
||
|
|
// randomize the returned Mac Address
|
||
|
|
// by xor ing the address with a random
|
||
|
|
// 0xf22f617c91e0 (a random number)
|
||
|
|
//
|
||
|
|
//pMacAddr->addr[0] ^= 0x00;
|
||
|
|
pMacAddr->addr[0] |= 0x2;
|
||
|
|
pMacAddr->addr[0] &= 0xf2;
|
||
|
|
pMacAddr->addr[1] ^= 0x2f;
|
||
|
|
pMacAddr->addr[2] ^= 0x61;
|
||
|
|
pMacAddr->addr[3] ^= 0x7c;
|
||
|
|
pMacAddr->addr[4] ^= 0x91;
|
||
|
|
pMacAddr->addr[5] ^= 0x30;
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|