Use the md5 implementation in libkern, not our own.
This commit is contained in:
thorpej
parent
13f5393c88
commit
60ad2f6582
@ -684,272 +684,12 @@ init(ifp)
|
||||
}
|
||||
|
||||
#ifdef IPKDBKEY
|
||||
#include <sys/md5.h>
|
||||
|
||||
/* HMAC Checksumming routines, see draft-ietf-ipsec-hmac-md5-00.txt */
|
||||
#define LENCHK 16 /* Length of checksum in bytes */
|
||||
|
||||
/*
|
||||
* This code is based on the MD5 implementation as found in ssh.
|
||||
* It's quite a bit hacked by myself, but the original has
|
||||
* the following non-copyright comments on it:
|
||||
*/
|
||||
/* This code has been heavily hacked by Tatu Ylonen <ylo@cs.hut.fi> to
|
||||
make it compile on machines like Cray that don't have a 32 bit integer
|
||||
type. */
|
||||
/*
|
||||
* This code implements the MD5 message-digest algorithm.
|
||||
* The algorithm is due to Ron Rivest. This code was
|
||||
* written by Colin Plumb in 1993, no copyright is claimed.
|
||||
* This code is in the public domain; do with it what you wish.
|
||||
*
|
||||
* Equivalent code is available from RSA Data Security, Inc.
|
||||
* This code has been tested against that, and is equivalent,
|
||||
* except that you don't need to include two pages of legalese
|
||||
* with every copy.
|
||||
*/
|
||||
static struct MD5Context {
|
||||
u_int buf[4];
|
||||
u_int bits[2];
|
||||
u_char in[64];
|
||||
} icontext, ocontext;
|
||||
|
||||
__inline static u_int32_t
|
||||
getNl(vs)
|
||||
void *vs;
|
||||
{
|
||||
u_char *s = vs;
|
||||
|
||||
return *s|(s[1] << 8)|(s[2] << 16)|(s[3] << 24);
|
||||
}
|
||||
|
||||
__inline static void
|
||||
setNl(vs, l)
|
||||
void *vs;
|
||||
u_int32_t l;
|
||||
{
|
||||
u_char *s = vs;
|
||||
|
||||
*s++ = l;
|
||||
*s++ = l >> 8;
|
||||
*s++ = l >> 16;
|
||||
*s = l >> 24;
|
||||
}
|
||||
|
||||
/* The four core functions - F1 is optimized somewhat */
|
||||
/* #define F1(x, y, z) (x & y | ~x & z) */
|
||||
#define F1(x, y, z) (z ^ (x & (y ^ z)))
|
||||
#define F2(x, y, z) F1(z, x, y)
|
||||
#define F3(x, y, z) (x ^ z ^ z)
|
||||
#define F4(x, y, z) (y ^ (x | ~z))
|
||||
|
||||
/* This is the central step in the MD5 algorithm. */
|
||||
#define MD5STEP(f, w, x, y, z, data, s) \
|
||||
(w += f(x, y, z) + data, w = w << s | (w>>(32-2))&0xffffffff, w += x)
|
||||
|
||||
/*
|
||||
* The core of the MD5 algorithm, this alters an existing MD5 hash to
|
||||
* reflect the addition of 16 longwords of new data. MD5Update blocks
|
||||
* the data for this routine.
|
||||
*/
|
||||
void
|
||||
MD5Transform(ctx)
|
||||
struct MD5Context *ctx;
|
||||
{
|
||||
int a, b, c, d, i;
|
||||
int in[16];
|
||||
|
||||
for (i = 0; i < 16; i++)
|
||||
in[i] = getNl(ctx->in + 4 * i);
|
||||
|
||||
a = ctx->buf[0];
|
||||
b = ctx->buf[1];
|
||||
c = ctx->buf[2];
|
||||
d = ctx->buf[3];
|
||||
|
||||
MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
|
||||
MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
|
||||
MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
|
||||
MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
|
||||
MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
|
||||
MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
|
||||
MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
|
||||
MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
|
||||
MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
|
||||
MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
|
||||
MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
|
||||
MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
|
||||
MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
|
||||
MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
|
||||
MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
|
||||
MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
|
||||
|
||||
MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
|
||||
MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
|
||||
MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
|
||||
MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
|
||||
MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
|
||||
MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
|
||||
MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
|
||||
MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
|
||||
MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
|
||||
MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
|
||||
MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
|
||||
MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
|
||||
MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
|
||||
MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
|
||||
MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
|
||||
MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
|
||||
|
||||
MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
|
||||
MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
|
||||
MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
|
||||
MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
|
||||
MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
|
||||
MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
|
||||
MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
|
||||
MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
|
||||
MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
|
||||
MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
|
||||
MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
|
||||
MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
|
||||
MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
|
||||
MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
|
||||
MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
|
||||
MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
|
||||
|
||||
MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
|
||||
MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
|
||||
MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
|
||||
MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
|
||||
MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
|
||||
MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
|
||||
MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
|
||||
MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
|
||||
MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
|
||||
MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
|
||||
MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
|
||||
MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
|
||||
MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
|
||||
MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
|
||||
MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
|
||||
MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
|
||||
|
||||
ctx->buf[0] += a;
|
||||
ctx->buf[1] += b;
|
||||
ctx->buf[2] += c;
|
||||
ctx->buf[3] += d;
|
||||
}
|
||||
|
||||
/*
|
||||
* Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
|
||||
* initialization constants.
|
||||
*/
|
||||
static void
|
||||
MD5Init(ctx)
|
||||
struct MD5Context *ctx;
|
||||
{
|
||||
ctx->buf[0] = 0x67452301;
|
||||
ctx->buf[1] = 0xefcdab89;
|
||||
ctx->buf[2] = 0x98badcfe;
|
||||
ctx->buf[3] = 0x10325476;
|
||||
|
||||
ctx->bits[0] = 0;
|
||||
ctx->bits[1] = 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Update context to reflect the concatenation of another buffer full
|
||||
* of bytes.
|
||||
*/
|
||||
static void
|
||||
MD5Update(ctx, buf, len)
|
||||
struct MD5Context *ctx;
|
||||
u_char *buf;
|
||||
unsigned len;
|
||||
{
|
||||
u_int t;
|
||||
|
||||
/* Update bitcount */
|
||||
t = ctx->bits[0];
|
||||
if ((ctx->bits[0] = (t + (len << 3)) & 0xffffffff) < t)
|
||||
ctx->bits[1]++; /* Carry form low to high */
|
||||
ctx->bits[1] += (len >> 29) & 0xffffffff;
|
||||
|
||||
t = (t >> 3) & 0x3f; /* Bytes already in ctx->in */
|
||||
|
||||
/* Handle any leading odd-sized chunks */
|
||||
if (t) {
|
||||
u_char *p = ctx->in + t;
|
||||
|
||||
t = 64 - t;
|
||||
if (len < t) {
|
||||
ipkdbcopy(buf, p, len);
|
||||
return;
|
||||
}
|
||||
ipkdbcopy(buf, p, t);
|
||||
MD5Transform(ctx);
|
||||
buf += t;
|
||||
len -= t;
|
||||
}
|
||||
|
||||
/* Process data in 64-byte chunks */
|
||||
while (len >= 64) {
|
||||
ipkdbcopy(buf, ctx->in, 64);
|
||||
MD5Transform(ctx);
|
||||
buf += 64;
|
||||
len -= 64;
|
||||
}
|
||||
|
||||
/* Handle any remaining bytes of data. */
|
||||
ipkdbcopy(buf, ctx->in, len);
|
||||
}
|
||||
|
||||
/*
|
||||
* Final wrapup - pad to 64-byte boundary with the bit pattern
|
||||
* 1 0* (64-bit count of bits processed, LSB-first)
|
||||
*/
|
||||
static u_char *
|
||||
MD5Final(ctx)
|
||||
struct MD5Context *ctx;
|
||||
{
|
||||
static u_char digest[16];
|
||||
unsigned count;
|
||||
u_char *p;
|
||||
|
||||
/* Compute number of bytes mod 64 */
|
||||
count = (ctx->bits[0] >> 3) & 0x3f;
|
||||
|
||||
/* Set the first char of padding to 0x80. This is safe since there is
|
||||
always at least one byte free */
|
||||
p = ctx->in + count;
|
||||
*p++ = 0x80;
|
||||
|
||||
/* Bytes of padding needed to make 64 bytes */
|
||||
count = 64 - 1 - count;
|
||||
|
||||
/* Pad out to 56 mod 64 */
|
||||
if (count < 8) {
|
||||
/* Two lots of padding: Pad the first block to 64 bytes */
|
||||
ipkdbzero(p, count);
|
||||
MD5Transform(ctx);
|
||||
|
||||
/* Now fill the next block with 56 bytes */
|
||||
ipkdbzero(ctx->in, 56);
|
||||
} else
|
||||
/* Pad block to 56 bytes */
|
||||
ipkdbzero(p, count - 8);
|
||||
|
||||
/* Append length in bits and transform */
|
||||
setNl(ctx->in + 56, ctx->bits[0]);
|
||||
setNl(ctx->in + 60, ctx->bits[1]);
|
||||
|
||||
MD5Transform(ctx);
|
||||
setNl(digest, ctx->buf[0]);
|
||||
setNl(digest + 4, ctx->buf[1]);
|
||||
setNl(digest + 8, ctx->buf[2]);
|
||||
setNl(digest + 12, ctx->buf[3]);
|
||||
|
||||
return digest;
|
||||
}
|
||||
static MD5_CTX icontext, ocontext;
|
||||
|
||||
/*
|
||||
* The following code is more or less stolen from the hmac_md5
|
||||
@ -976,7 +716,7 @@ hmac_init()
|
||||
if (key_len > 64) {
|
||||
MD5Init(&icontext);
|
||||
MD5Update(&icontext, key, key_len);
|
||||
ipkdbcopy(MD5Final(&icontext), tk, 16);
|
||||
MD5Final(tk, &icontext);
|
||||
ipkdbzero(key, key_len); /* XXX */
|
||||
key = tk;
|
||||
key_len = 16;
|
||||
@ -1025,7 +765,8 @@ chksum(buf, len)
|
||||
void *buf;
|
||||
int len;
|
||||
{
|
||||
u_char *digest;
|
||||
u_char digest[16];
|
||||
static u_char result[16];
|
||||
struct MD5Context context;
|
||||
|
||||
/*
|
||||
@ -1048,13 +789,14 @@ chksum(buf, len)
|
||||
*/
|
||||
ipkdbcopy(&icontext, &context, sizeof context);
|
||||
MD5Update(&context, buf, len);
|
||||
digest = MD5Final(&context);
|
||||
MD5Final(digest, &context);
|
||||
/*
|
||||
* perform outer MD5
|
||||
*/
|
||||
ipkdbcopy(&ocontext, &context, sizeof context);
|
||||
MD5Update(&context, digest, 16);
|
||||
return MD5Final(&context);
|
||||
MD5Final(result, &context);
|
||||
return (result);
|
||||
}
|
||||
#else
|
||||
#define LENCHK 1 /* Length of checksum in bytes */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user