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Diffstat (limited to 'contrib/pgcrypto/crypt-md5.c')
| -rw-r--r-- | contrib/pgcrypto/crypt-md5.c | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/contrib/pgcrypto/crypt-md5.c b/contrib/pgcrypto/crypt-md5.c deleted file mode 100644 index 7b45bb2151b..00000000000 --- a/contrib/pgcrypto/crypt-md5.c +++ /dev/null @@ -1,153 +0,0 @@ -/* - * ---------------------------------------------------------------------------- - * "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-md5.c,v 1.5 1999/12/17 20:21:45 peter Exp $ - * - */ -/* $Id: crypt-md5.c,v 1.2 2001/10/25 05:49:19 momjian Exp $ */ - -#include <postgres.h> -#include "px.h" -#include "px-crypt.h" - -#define MD5_SIZE 16 -/* - * UNIX password - */ - -char * -px_crypt_md5(const char *pw, const char *salt, char *passwd, unsigned dstlen) -{ - static char *magic = "$1$"; /* This string is magic for this - * algorithm. Having it this way, we can - * get get better later on */ - static char *p; - static const char *sp, - *ep; - unsigned char final[MD5_SIZE]; - int sl, - pl, - i; - PX_MD *ctx, - *ctx1; - int err; - unsigned long l; - - if (!passwd || dstlen < 120) - return NULL; - - /* 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; - - /* */ - err = px_find_digest("md5", &ctx); - if (err) - return NULL; - err = px_find_digest("md5", &ctx1); - - /* The password first, since that is what is most unknown */ - px_md_update(ctx, pw, strlen(pw)); - - /* Then our magic string */ - px_md_update(ctx, magic, strlen(magic)); - - /* Then the raw salt */ - px_md_update(ctx, sp, sl); - - /* Then just as many characters of the MD5(pw,salt,pw) */ - px_md_update(ctx1, pw, strlen(pw)); - px_md_update(ctx1, sp, sl); - px_md_update(ctx1, pw, strlen(pw)); - px_md_finish(ctx1, final); - for (pl = strlen(pw); pl > 0; pl -= MD5_SIZE) - px_md_update(ctx, final, pl > MD5_SIZE ? MD5_SIZE : pl); - - /* Don't leave anything around in vm they could use. */ - memset(final, 0, sizeof final); - - /* Then something really weird... */ - for (i = strlen(pw); i; i >>= 1) - if (i & 1) - px_md_update(ctx, final, 1); - else - px_md_update(ctx, pw, 1); - - /* Now make the output string */ - strcpy(passwd, magic); - strncat(passwd, sp, sl); - strcat(passwd, "$"); - - px_md_finish(ctx, final); - - /* - * 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++) - { - px_md_reset(ctx1); - if (i & 1) - px_md_update(ctx1, pw, strlen(pw)); - else - px_md_update(ctx1, final, MD5_SIZE); - - if (i % 3) - px_md_update(ctx1, sp, sl); - - if (i % 7) - px_md_update(ctx1, pw, strlen(pw)); - - if (i & 1) - px_md_update(ctx1, final, MD5_SIZE); - else - px_md_update(ctx1, pw, strlen(pw)); - px_md_finish(ctx1, final); - } - - p = passwd + strlen(passwd); - - l = (final[0] << 16) | (final[6] << 8) | final[12]; - _crypt_to64(p, l, 4); - p += 4; - l = (final[1] << 16) | (final[7] << 8) | final[13]; - _crypt_to64(p, l, 4); - p += 4; - l = (final[2] << 16) | (final[8] << 8) | final[14]; - _crypt_to64(p, l, 4); - p += 4; - l = (final[3] << 16) | (final[9] << 8) | final[15]; - _crypt_to64(p, l, 4); - p += 4; - l = (final[4] << 16) | (final[10] << 8) | final[5]; - _crypt_to64(p, l, 4); - p += 4; - l = final[11]; - _crypt_to64(p, l, 2); - p += 2; - *p = '\0'; - - /* Don't leave anything around in vm they could use. */ - memset(final, 0, sizeof final); - - px_md_free(ctx1); - px_md_free(ctx); - - return passwd; -} |