zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libcrypt/md5.c b/ap/build/uClibc/libcrypt/md5.c
new file mode 100644
index 0000000..1af11ed
--- /dev/null
+++ b/ap/build/uClibc/libcrypt/md5.c
@@ -0,0 +1,637 @@
+/*
+ * 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.
+ *
+ * $FreeBSD: src/lib/libmd/md5c.c,v 1.9.2.1 1999/08/29 14:57:12 peter Exp $
+ *
+ * This code is the same as the code published by RSA Inc. It has been
+ * edited for clarity and style only.
+ *
+ * ----------------------------------------------------------------------------
+ * The md5_crypt() function was taken from freeBSD's libcrypt and contains
+ * this license:
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <phk@login.dknet.dk> wrote this file. As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
+ *
+ * $FreeBSD: src/lib/libcrypt/crypt.c,v 1.7.2.1 1999/08/29 14:56:33 peter Exp $
+ *
+ * ----------------------------------------------------------------------------
+ * On April 19th, 2001 md5_crypt() was modified to make it reentrant
+ * by Erik Andersen <andersen@uclibc.org>
+ *
+ *
+ * June 28, 2001 Manuel Novoa III
+ *
+ * "Un-inlined" code using loops and static const tables in order to
+ * reduce generated code size (on i386 from approx 4k to approx 2.5k).
+ *
+ * June 29, 2001 Manuel Novoa III
+ *
+ * Completely removed static PADDING array.
+ *
+ * Reintroduced the loop unrolling in MD5_Transform and added the
+ * MD5_SIZE_OVER_SPEED option for configurability. Define below as:
+ * 0 fully unrolled loops
+ * 1 partially unrolled (4 ops per loop)
+ * 2 no unrolling -- introduces the need to swap 4 variables (slow)
+ * 3 no unrolling and all 4 loops merged into one with switch
+ * in each loop (glacial)
+ * On i386, sizes are roughly (-Os -fno-builtin):
+ * 0: 3k 1: 2.5k 2: 2.2k 3: 2k
+ *
+ *
+ * Since SuSv3 does not require crypt_r, modified again August 7, 2002
+ * by Erik Andersen to remove reentrance stuff...
+ */
+
+/*
+ * Valid values are 1 (fastest/largest) to 3 (smallest/slowest).
+ */
+#define MD5_SIZE_OVER_SPEED 3
+
+/**********************************************************************/
+
+#include <sys/types.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <crypt.h>
+#include <sys/cdefs.h>
+#include "libcrypt.h"
+
+/* MD5 context. */
+struct MD5Context {
+ u_int32_t state[4]; /* state (ABCD) */
+ u_int32_t count[2]; /* number of bits, modulo 2^64 (lsb first) */
+ unsigned char buffer[64]; /* input buffer */
+};
+
+static void __md5_Init (struct MD5Context *);
+static void __md5_Update (struct MD5Context *, const unsigned char *, unsigned int);
+static void __md5_Pad (struct MD5Context *);
+static void __md5_Final (unsigned char [16], struct MD5Context *);
+static void __md5_Transform __P((u_int32_t [4], const unsigned char [64]));
+
+
+#define MD5_MAGIC_STR "$1$"
+#define MD5_MAGIC_LEN (sizeof(MD5_MAGIC_STR) - 1)
+static const unsigned char __md5__magic[] = MD5_MAGIC_STR;
+static const unsigned char __md5_itoa64[] = /* 0 ... 63 => ascii - 64 */
+ "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+
+
+#ifdef i386
+#define __md5_Encode memcpy
+#define __md5_Decode memcpy
+#else /* i386 */
+
+/*
+ * __md5_Encodes input (u_int32_t) into output (unsigned char). Assumes len is
+ * a multiple of 4.
+ */
+
+static void
+__md5_Encode (unsigned char *output, u_int32_t *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);
+ }
+}
+
+/*
+ * __md5_Decodes input (unsigned char) into output (u_int32_t). Assumes len is
+ * a multiple of 4.
+ */
+
+static void
+__md5_Decode (u_int32_t *output, const unsigned char *input, unsigned int len)
+{
+ unsigned int i, j;
+
+ for (i = 0, j = 0; j < len; i++, j += 4)
+ output[i] = ((u_int32_t)input[j]) | (((u_int32_t)input[j+1]) << 8) |
+ (((u_int32_t)input[j+2]) << 16) | (((u_int32_t)input[j+3]) << 24);
+}
+#endif /* i386 */
+
+/* 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) + (u_int32_t)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ }
+#define GG(a, b, c, d, x, s, ac) { \
+ (a) += G ((b), (c), (d)) + (x) + (u_int32_t)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ }
+#define HH(a, b, c, d, x, s, ac) { \
+ (a) += H ((b), (c), (d)) + (x) + (u_int32_t)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ }
+#define II(a, b, c, d, x, s, ac) { \
+ (a) += I ((b), (c), (d)) + (x) + (u_int32_t)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ }
+
+/* MD5 initialization. Begins an MD5 operation, writing a new context. */
+
+static void __md5_Init (struct MD5Context *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.
+ */
+
+static void __md5_Update ( struct MD5Context *context, const unsigned char *input, unsigned int inputLen)
+{
+ unsigned int i, idx, partLen;
+
+ /* Compute number of bytes mod 64 */
+ idx = (unsigned int)((context->count[0] >> 3) & 0x3F);
+
+ /* Update number of bits */
+ if ((context->count[0] += ((u_int32_t)inputLen << 3))
+ < ((u_int32_t)inputLen << 3))
+ context->count[1]++;
+ context->count[1] += ((u_int32_t)inputLen >> 29);
+
+ partLen = 64 - idx;
+
+ /* Transform as many times as possible. */
+ if (inputLen >= partLen) {
+ memcpy((void *)&context->buffer[idx], (const void *)input,
+ partLen);
+ __md5_Transform (context->state, context->buffer);
+
+ for (i = partLen; i + 63 < inputLen; i += 64)
+ __md5_Transform (context->state, &input[i]);
+
+ idx = 0;
+ }
+ else
+ i = 0;
+
+ /* Buffer remaining input */
+ memcpy ((void *)&context->buffer[idx], (const void *)&input[i],
+ inputLen-i);
+}
+
+/*
+ * MD5 padding. Adds padding followed by original length.
+ */
+
+static void __md5_Pad ( struct MD5Context *context)
+{
+ unsigned char bits[8];
+ unsigned int idx, padLen;
+ unsigned char PADDING[64];
+
+ memset(PADDING, 0, sizeof(PADDING));
+ PADDING[0] = 0x80;
+
+ /* Save number of bits */
+ __md5_Encode (bits, context->count, 8);
+
+ /* Pad out to 56 mod 64. */
+ idx = (unsigned int)((context->count[0] >> 3) & 0x3f);
+ padLen = (idx < 56) ? (56 - idx) : (120 - idx);
+ __md5_Update (context, PADDING, padLen);
+
+ /* Append length (before padding) */
+ __md5_Update (context, bits, 8);
+}
+
+/*
+ * MD5 finalization. Ends an MD5 message-digest operation, writing the
+ * the message digest and zeroizing the context.
+ */
+
+static void __md5_Final ( unsigned char digest[16], struct MD5Context *context)
+{
+ /* Do padding. */
+ __md5_Pad (context);
+
+ /* Store state in digest */
+ __md5_Encode (digest, context->state, 16);
+
+ /* Zeroize sensitive information. */
+ memset ((void *)context, 0, sizeof (*context));
+}
+
+/* MD5 basic transformation. Transforms state based on block. */
+
+static void __md5_Transform (u_int32_t state[4], const unsigned char block[64])
+{
+ u_int32_t a, b, c, d, x[16];
+#if MD5_SIZE_OVER_SPEED > 1
+ u_int32_t temp;
+ const char *ps;
+
+ static const char S[] = {
+ 7, 12, 17, 22,
+ 5, 9, 14, 20,
+ 4, 11, 16, 23,
+ 6, 10, 15, 21
+ };
+#endif /* MD5_SIZE_OVER_SPEED > 1 */
+
+#if MD5_SIZE_OVER_SPEED > 0
+ const u_int32_t *pc;
+ const char *pp;
+ int i;
+
+ static const u_int32_t C[] = {
+ /* round 1 */
+ 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
+ 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
+ 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
+ 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
+ /* round 2 */
+ 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
+ 0xd62f105d, 0x2441453, 0xd8a1e681, 0xe7d3fbc8,
+ 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
+ 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
+ /* round 3 */
+ 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
+ 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
+ 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05,
+ 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
+ /* round 4 */
+ 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
+ 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
+ 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
+ 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
+ };
+
+ static const char P[] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 1 */
+ 1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, /* 2 */
+ 5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, /* 3 */
+ 0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9 /* 4 */
+ };
+
+#endif /* MD5_SIZE_OVER_SPEED > 0 */
+
+ __md5_Decode (x, block, 64);
+
+ a = state[0]; b = state[1]; c = state[2]; d = state[3];
+
+#if MD5_SIZE_OVER_SPEED > 2
+ pc = C; pp = P; ps = S - 4;
+
+ for ( i = 0 ; i < 64 ; i++ ) {
+ if ((i&0x0f) == 0) ps += 4;
+ temp = a;
+ switch (i>>4) {
+ case 0:
+ temp += F(b,c,d);
+ break;
+ case 1:
+ temp += G(b,c,d);
+ break;
+ case 2:
+ temp += H(b,c,d);
+ break;
+ case 3:
+ temp += I(b,c,d);
+ break;
+ }
+ temp += x[(int)(*pp++)] + *pc++;
+ temp = ROTATE_LEFT(temp, ps[i&3]);
+ temp += b;
+ a = d; d = c; c = b; b = temp;
+ }
+#elif MD5_SIZE_OVER_SPEED > 1
+ pc = C; pp = P; ps = S;
+
+ /* Round 1 */
+ for ( i = 0 ; i < 16 ; i++ ) {
+ FF (a, b, c, d, x[(int)(*pp++)], ps[i&0x3], *pc++);
+ temp = d; d = c; c = b; b = a; a = temp;
+ }
+
+ /* Round 2 */
+ ps += 4;
+ for ( ; i < 32 ; i++ ) {
+ GG (a, b, c, d, x[(int)(*pp++)], ps[i&0x3], *pc++);
+ temp = d; d = c; c = b; b = a; a = temp;
+ }
+ /* Round 3 */
+ ps += 4;
+ for ( ; i < 48 ; i++ ) {
+ HH (a, b, c, d, x[(int)(*pp++)], ps[i&0x3], *pc++);
+ temp = d; d = c; c = b; b = a; a = temp;
+ }
+
+ /* Round 4 */
+ ps += 4;
+ for ( ; i < 64 ; i++ ) {
+ II (a, b, c, d, x[(int)(*pp++)], ps[i&0x3], *pc++);
+ temp = d; d = c; c = b; b = a; a = temp;
+ }
+#elif MD5_SIZE_OVER_SPEED > 0
+ pc = C; pp = P;
+
+ /* Round 1 */
+ for ( i = 0 ; i < 4 ; i++ ) {
+ FF (a, b, c, d, x[(int)(*pp++)], 7, *pc++);
+ FF (d, a, b, c, x[(int)(*pp++)], 12, *pc++);
+ FF (c, d, a, b, x[(int)(*pp++)], 17, *pc++);
+ FF (b, c, d, a, x[(int)(*pp++)], 22, *pc++);
+ }
+
+ /* Round 2 */
+ for ( i = 0 ; i < 4 ; i++ ) {
+ GG (a, b, c, d, x[(int)(*pp++)], 5, *pc++);
+ GG (d, a, b, c, x[(int)(*pp++)], 9, *pc++);
+ GG (c, d, a, b, x[(int)(*pp++)], 14, *pc++);
+ GG (b, c, d, a, x[(int)(*pp++)], 20, *pc++);
+ }
+ /* Round 3 */
+ for ( i = 0 ; i < 4 ; i++ ) {
+ HH (a, b, c, d, x[(int)(*pp++)], 4, *pc++);
+ HH (d, a, b, c, x[(int)(*pp++)], 11, *pc++);
+ HH (c, d, a, b, x[(int)(*pp++)], 16, *pc++);
+ HH (b, c, d, a, x[(int)(*pp++)], 23, *pc++);
+ }
+
+ /* Round 4 */
+ for ( i = 0 ; i < 4 ; i++ ) {
+ II (a, b, c, d, x[(int)(*pp++)], 6, *pc++);
+ II (d, a, b, c, x[(int)(*pp++)], 10, *pc++);
+ II (c, d, a, b, x[(int)(*pp++)], 15, *pc++);
+ II (b, c, d, a, x[(int)(*pp++)], 21, *pc++);
+ }
+#else
+ /* Round 1 */
+#define S11 7
+#define S12 12
+#define S13 17
+#define S14 22
+ 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 */
+#define S21 5
+#define S22 9
+#define S23 14
+#define S24 20
+ 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 */
+#define S31 4
+#define S32 11
+#define S33 16
+#define S34 23
+ 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 */
+#define S41 6
+#define S42 10
+#define S43 15
+#define S44 21
+ 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 */
+#endif
+
+ state[0] += a;
+ state[1] += b;
+ state[2] += c;
+ state[3] += d;
+
+ /* Zeroize sensitive information. */
+ memset ((void *)x, 0, sizeof (x));
+}
+
+
+static void __md5_to64( char *s, unsigned long v, int n)
+{
+ while (--n >= 0) {
+ *s++ = __md5_itoa64[v&0x3f];
+ v >>= 6;
+ }
+}
+
+/*
+ * UNIX password
+ *
+ * Use MD5 for what it is best at...
+ */
+
+char *__md5_crypt(const unsigned char *pw, const unsigned char *salt)
+{
+ /* Static stuff */
+ /* "$1$" + salt_up_to_8_chars + "$" + 22_bytes_of_hash + NUL */
+ static char passwd[3 + 8 + 1 + 22 + 1];
+
+ const unsigned char *sp, *ep;
+ char *p;
+ unsigned char final[17]; /* final[16] exists only to aid in looping */
+ int sl,pl,i,pw_len;
+ struct MD5Context ctx,ctx1;
+ unsigned long l;
+
+ /* Refine the Salt first */
+ sp = salt;
+
+ /* If it starts with the magic string, then skip that */
+ if(!strncmp(sp,__md5__magic,MD5_MAGIC_LEN))
+ sp += MD5_MAGIC_LEN;
+
+ /* It stops at the first '$', max 8 chars */
+ for(ep=sp;*ep && *ep != '$' && ep < (sp+8);ep++)
+ continue;
+
+ /* get the length of the true salt */
+ sl = ep - sp;
+
+ __md5_Init(&ctx);
+
+ /* The password first, since that is what is most unknown */
+ pw_len = strlen(pw);
+ __md5_Update(&ctx,pw,pw_len);
+
+ /* Then our magic string */
+ __md5_Update(&ctx,__md5__magic,MD5_MAGIC_LEN);
+
+ /* Then the raw salt */
+ __md5_Update(&ctx,sp,sl);
+
+ /* Then just as many characters of the MD5(pw,salt,pw) */
+ __md5_Init(&ctx1);
+ __md5_Update(&ctx1,pw,pw_len);
+ __md5_Update(&ctx1,sp,sl);
+ __md5_Update(&ctx1,pw,pw_len);
+ __md5_Final(final,&ctx1);
+ for(pl = pw_len; pl > 0; pl -= 16)
+ __md5_Update(&ctx,final,pl>16 ? 16 : pl);
+
+ /* Don't leave anything around in vm they could use. */
+ memset(final,0,sizeof final);
+
+ /* Then something really weird... */
+ for (i = pw_len; i ; i >>= 1) {
+ __md5_Update(&ctx, ((i&1) ? final : (const unsigned char *) pw), 1);
+ }
+
+ /* Now make the output string */
+ strcpy(passwd,__md5__magic); /* 3 bytes */
+ strncpy(passwd+MD5_MAGIC_LEN,(char*)sp,sl); /* 8 or less */
+ passwd[MD5_MAGIC_LEN+sl] = '$';
+
+ __md5_Final(final,&ctx);
+
+ /*
+ * and now, just to make sure things don't run too fast
+ * On a 60 Mhz Pentium this takes 34 msec, so you would
+ * need 30 seconds to build a 1000 entry dictionary...
+ */
+ for(i=0;i<1000;i++) {
+ __md5_Init(&ctx1);
+ if(i & 1)
+ __md5_Update(&ctx1,pw,pw_len);
+ else
+ __md5_Update(&ctx1,final,16);
+
+ if(i % 3)
+ __md5_Update(&ctx1,sp,sl);
+
+ if(i % 7)
+ __md5_Update(&ctx1,pw,pw_len);
+
+ if(i & 1)
+ __md5_Update(&ctx1,final,16);
+ else
+ __md5_Update(&ctx1,pw,pw_len);
+ __md5_Final(final,&ctx1);
+ }
+
+ /* Add 5*4+2 = 22 bytes of hash, + NUL byte. */
+ p = passwd + MD5_MAGIC_LEN + sl + 1;
+ final[16] = final[5];
+ for ( i=0 ; i < 5 ; i++ ) {
+ l = (final[i]<<16) | (final[i+6]<<8) | final[i+12];
+ __md5_to64(p,l,4);
+ p += 4;
+ }
+ l = final[11];
+ __md5_to64(p,l,2);
+ p += 2;
+ *p = '\0';
+
+ /* Don't leave anything around in vm they could use. */
+ memset(final,0,sizeof final);
+
+ return passwd;
+}
+