-
-#ifdef WIN32
-#include <process.h>
-#include <windows.h>
-#else
-#include <sys/time.h>
-#include <unistd.h>
-#endif
-
-#include <time.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "ag_md5.h"
-
-
-#define F1(x, y, z) (z ^ (x & (y ^ z)))
-#define F2(x, y, z) F1(z, x, y)
-#define F3(x, y, z) (x ^ y ^ z)
-#define F4(x, y, z) (y ^ (x | ~z))
-
-#define MD5STEP(f, w, x, y, z, data, s) \
- ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
-
-
-int i64c(int i)
-{
- if (i <= 0)
- return ('.');
-
- if (i == 1)
- return ('/');
-
- if (i >= 2 && i < 12)
- return ('0' - 2 + i);
-
- if (i >= 12 && i < 38)
- return ('A' - 12 + i);
-
- if (i >= 38 && i < 63)
- return ('a' - 38 + i);
-
- return ('z');
-}
-
-char * l64a_(long l)
-{
- static char buf[8];
- int i = 0;
-
- if (l < 0L)
- return ((char *) 0);
-
- do {
- buf[i++] = i64c ((int) (l % 64));
- buf[i] = '\0';
- } while (l /= 64L, l > 0 && i < 6);
-
- return (buf);
-}
-
-char * crypt_make_salt(void)
-{
-
- static char result[40];
- #ifdef WIN32
- unsigned int tsec;
- #else
- struct timeval tv;
- #endif
-
- result[0] = '\0';
- strcpy(result, "$1$"); /* magic for the new MD5 crypt() */
-
- /*
- * Generate 8 chars of salt, the old crypt() will use only first 2.
- */
- #ifdef WIN32
- strcat(result, l64a_(GetTickCount()));
- tsec = time(NULL);
- strcat(result, l64a_(tsec + getpid() + clock()));
- #else
- gettimeofday(&tv, (struct timezone *) 0);
- strcat(result, l64a_(tv.tv_usec));
- strcat(result, l64a_(tv.tv_sec + getpid() + clock()));
- #endif
-
- if (strlen(result) > 3 + 8) /* magic+salt */
- result[11] = '\0';
-
- return result;
-}
-
-void byteReverse(unsigned char *buf, unsigned longs)
-{
- uint32_t t;
- do {
- t = (uint32_t) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
- ((unsigned) buf[1] << 8 | buf[0]);
- *(uint32_t *) buf = t;
- buf += 4;
- } while (--longs);
-}
-
-/*
- * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
- * initialization constants.
- */
-void MD5Init(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.
- */
-void MD5Update(struct MD5Context *ctx, char const *buf, unsigned len)
-{
- uint32_t t;
-
- /* Update bitcount */
-
- t = ctx->bits[0];
- if ((ctx->bits[0] = t + ((uint32_t) len << 3)) < t)
- ctx->bits[1]++; /* Carry from low to high */
- ctx->bits[1] += len >> 29;
-
- t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
-
- /* Handle any leading odd-sized chunks */
-
- if (t) {
- unsigned char *p = (unsigned char *) ctx->in + t;
-
- t = 64 - t;
- if (len < t) {
- memcpy(p, buf, len);
- return;
- }
- memcpy(p, buf, t);
- byteReverse(ctx->in, 16);
- MD5Transform(ctx->buf, (uint32_t *) ctx->in);
- buf += t;
- len -= t;
- }
- /* Process data in 64-byte chunks */
-
- while (len >= 64) {
- memcpy(ctx->in, buf, 64);
- byteReverse(ctx->in, 16);
- MD5Transform(ctx->buf, (uint32_t *) ctx->in);
- buf += 64;
- len -= 64;
- }
-
- /* Handle any remaining bytes of data. */
-
- memcpy(ctx->in, buf, len);
-}
-
-/*
- * Final wrapup - pad to 64-byte boundary with the bit pattern
- * 1 0* (64-bit count of bits processed, MSB-first)
- */
-void
-MD5Final(unsigned char digest[16], struct MD5Context *ctx)
-{
- unsigned count;
- unsigned 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 */
- memset(p, 0, count);
- byteReverse(ctx->in, 16);
- MD5Transform(ctx->buf, (uint32_t *) ctx->in);
-
- /* Now fill the next block with 56 bytes */
- memset(ctx->in, 0, 56);
- } else {
- /* Pad block to 56 bytes */
- memset(p, 0, count - 8);
- }
- byteReverse(ctx->in, 14);
-
- /* Append length in bits and transform */
- ((uint32_t *) ctx->in)[14] = ctx->bits[0];
- ((uint32_t *) ctx->in)[15] = ctx->bits[1];
-
- MD5Transform(ctx->buf, (uint32_t *) ctx->in);
- byteReverse((unsigned char *) ctx->buf, 4);
- memcpy(digest, ctx->buf, 16);
- memset((char *) ctx, 0, sizeof(ctx)); /* In case it's sensitive */
-}
-
-/*
- * 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 and converts bytes into longwords for this routine.
- */
-void
-MD5Transform(uint32_t buf[4], uint32_t const in[16])
-{
- register uint32_t a, b, c, d;
-
- a = buf[0];
- b = buf[1];
- c = buf[2];
- d = 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);
-
- buf[0] += a;
- buf[1] += b;
- buf[2] += c;
- buf[3] += d;
-}
-
-static unsigned char itoa64[] = /* 0 ... 63 => ascii - 64 */
- "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
-
-static void
-to64(char *s, unsigned long v, int n)
-{
- while (--n >= 0) {
- *s++ = itoa64[v&0x3f];
- v >>= 6;
- }
-}
-
-/*
- * UNIX password
- *
- * Use MD5 for what it is best at...
- */
-
-char *
-libshadow_md5_crypt(const char *pw, const char *salt)
-{
- static const char *magic = "$1$"; /*
- * This string is magic for
- * this algorithm. Having
- * it this way, we can get
- * get better later on
- */
- static char passwd[120], *p;
- static const char *sp,*ep;
- unsigned char final[16];
- int sl,pl,i,j;
- MD5_CTX ctx,ctx1;
- unsigned long l;
-
- /* Refine the Salt first */
- sp = salt;
-
- /* If it starts with the magic string, then skip that */
- if(!strncmp(sp,magic,strlen(magic)))
- sp += strlen(magic);
-
- /* 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;
-
- MD5Init(&ctx);
-
- /* The password first, since that is what is most unknown */
- MD5Update(&ctx, pw, strlen(pw));
-
- /* Then our magic string */
- MD5Update(&ctx, magic, strlen(magic));
-
- /* Then the raw salt */
- MD5Update(&ctx, sp, sl);
-
- /* Then just as many characters of the MD5(pw,salt,pw) */
- MD5Init(&ctx1);
- MD5Update(&ctx1,pw,strlen(pw));
- MD5Update(&ctx1,sp,sl);
- MD5Update(&ctx1,pw,strlen(pw));
- MD5Final(final,&ctx1);
- for(pl = strlen(pw); pl > 0; pl -= 16)
- MD5Update(&ctx, (char*)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 (j=0,i = strlen(pw); i ; i >>= 1)
- if(i&1)
- MD5Update(&ctx, (char*)final+j, 1);
- else
- MD5Update(&ctx, pw+j, 1);
-
- /* Now make the output string */
- strcpy(passwd,magic);
- strncat(passwd,sp,sl);
- strcat(passwd,"$");
-
- MD5Final(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++) {
- MD5Init(&ctx1);
- if(i & 1)
- MD5Update(&ctx1,pw,strlen(pw));
- else
- MD5Update(&ctx1,final,16);
-
- if(i % 3)
- MD5Update(&ctx1,sp,sl);
-
- if(i % 7)
- MD5Update(&ctx1,pw,strlen(pw));
-
- if(i & 1)
- MD5Update(&ctx1,final,16);
- else
- MD5Update(&ctx1,pw,strlen(pw));
- MD5Final(final,&ctx1);
- }*/
-
- p = passwd + strlen(passwd);
-
- l = (final[ 0]<<16) | (final[ 6]<<8) | final[12]; to64(p,l,4); p += 4;
- l = (final[ 1]<<16) | (final[ 7]<<8) | final[13]; to64(p,l,4); p += 4;
- l = (final[ 2]<<16) | (final[ 8]<<8) | final[14]; to64(p,l,4); p += 4;
- l = (final[ 3]<<16) | (final[ 9]<<8) | final[15]; to64(p,l,4); p += 4;
- l = (final[ 4]<<16) | (final[10]<<8) | final[ 5]; to64(p,l,4); p += 4;
- l = final[11] ; 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;
-}
-
-char *pw_encrypt(const char *clear, const char *salt) {
-
- /*
- * If the salt string from the password file or from crypt_make_salt()
- * begins with the magic string, use the new algorithm.
- */
- if (strncmp(salt, "$1$", 3) == 0)
- return(libshadow_md5_crypt(clear, salt));
- else return(NULL);
-
-}
-/* AG MD5 functions */
-char *make_ag_hash(time_t salt, const char *clear) {
- char salt_str[20];
- char *res=NULL;
- char *p;
-
- unsigned long slt = salt;
- sprintf(salt_str, "$1$%08lx", slt);
- res=libshadow_md5_crypt(clear, salt_str);
- p=strrchr(res, '$');
- return(++p);
-}
-
-int check_ag_hash(time_t salt, const char *clear, const char *hash) {
- return(strcmp(hash, make_ag_hash(salt, clear)));
-}
-
git.stg.codes / stg.git / blobdiff