From 54abd2aa66069e6baf7769c496f46d9dba18db39 Mon Sep 17 00:00:00 2001
From: Gerald Carter <jerry@samba.org>
Date: Fri, 30 Sep 2005 17:13:37 +0000
Subject: r10656: BIG merge from trunk.  Features not copied over

* \PIPE\unixinfo
* winbindd's {group,alias}membership new functions
* winbindd's lookupsids() functionality
* swat (trunk changes to be reverted as per discussion with Deryck)
(This used to be commit 939c3cb5d78e3a2236209b296aa8aba8bdce32d3)
---
 source3/lib/genrand.c | 61 +++------------------------------------------------
 1 file changed, 3 insertions(+), 58 deletions(-)

(limited to 'source3/lib/genrand.c')

diff --git a/source3/lib/genrand.c b/source3/lib/genrand.c
index 9ccddfa4c53..f37bbc9c2fd 100644
--- a/source3/lib/genrand.c
+++ b/source3/lib/genrand.c
@@ -22,7 +22,7 @@
 
 #include "includes.h"
 
-static unsigned char hash[258];
+static unsigned char smb_arc4_state[258];
 static uint32 counter;
 
 static BOOL done_reseed = False;
@@ -52,61 +52,6 @@ static void get_rand_reseed_data(int *reseed_data)
 	}
 }
 
-/**************************************************************** 
- Setup the seed.
-*****************************************************************/
-
-static void seed_random_stream(unsigned char *seedval, size_t seedlen)
-{
-	unsigned char j = 0;
-	size_t ind;
-
-	for (ind = 0; ind < 256; ind++)
-		hash[ind] = (unsigned char)ind;
-
-	for( ind = 0; ind < 256; ind++) {
-		unsigned char tc;
-
-		j += (hash[ind] + seedval[ind%seedlen]);
-
-		tc = hash[ind];
-		hash[ind] = hash[j];
-		hash[j] = tc;
-	}
-
-	hash[256] = 0;
-	hash[257] = 0;
-}
-
-/**************************************************************** 
- Get datasize bytes worth of random data.
-*****************************************************************/
-
-static void get_random_stream(unsigned char *data, size_t datasize)
-{
-	unsigned char index_i = hash[256];
-	unsigned char index_j = hash[257];
-	size_t ind;
-
-	for( ind = 0; ind < datasize; ind++) {
-		unsigned char tc;
-		unsigned char t;
-
-		index_i++;
-		index_j += hash[index_i];
-
-		tc = hash[index_i];
-		hash[index_i] = hash[index_j];
-		hash[index_j] = tc;
-
-		t = hash[index_i] + hash[index_j];
-		data[ind] = hash[t];
-	}
-
-	hash[256] = index_i;
-	hash[257] = index_j;
-}
-
 /****************************************************************
  Get a 16 byte hash from the contents of a file.
  Note that the hash is not initialised.
@@ -202,7 +147,7 @@ static int do_reseed(BOOL use_fd, int fd)
 			seed_inbuf[i] ^= ((char *)(&reseed_data))[i % sizeof(reseed_data)];
 	}
 
-	seed_random_stream(seed_inbuf, sizeof(seed_inbuf));
+	smb_arc4_init(smb_arc4_state, seed_inbuf, sizeof(seed_inbuf));
 
 	return -1;
 }
@@ -246,7 +191,7 @@ void generate_random_buffer( unsigned char *out, int len)
 	while(len > 0) {
 		int copy_len = len > 16 ? 16 : len;
 
-		get_random_stream(md4_buf, sizeof(md4_buf));
+		smb_arc4_crypt(smb_arc4_state, md4_buf, sizeof(md4_buf));
 		mdfour(tmp_buf, md4_buf, sizeof(md4_buf));
 		memcpy(p, tmp_buf, copy_len);
 		p += copy_len;
-- 
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