search for: md4

...e protocol documented? I've answered all my questions by looking at the source, but it would be great to check against any docs.) I started with librsync 0.9.3 and the Intermezzo perl interface to librsync written by Shirish Phatak. However, as I'm sure is well-known, the Adler crc32 and MD4 computed by librsync don't match those in rsync 2.5.5. After swapping the crc32 endianess, changing RS_CHAR_OFFSET from 31 to 0, and adding rsync's checksum_seed to librsync's MD4 they now agree, except in one case: when the total data length (including the 4 byte checksum_seed) is a m...

On Tue, Jan 28, 2003 at 11:22:14PM -0800, Craig Barratt wrote: > And I have several things I would like to work on and submit: > > - Fix the MD4 block and file checksums to comply with the rfc > (currently MD4 is wrong for blocks of size 64*n, or files > longer than 512MB). > > - Adaptive first pass checksum lengths: use 3 or more bytes of the MD4 > block checksum for big files (instead of 2). This is to avoid alm...

Hello, While porting rsync 2.5.6 to .NET (C#), I noticed that the MD4 engine in the original source code in my possession behaved differently from the C# MD4 engine that I was using in my own code. While testing the file transfer between my program and a compiled version of rsync 2.5.6, I noticed that the file checksums generated for the entire file to detect corrup...

On Tue, 2006-02-21 at 14:58 -0800, rsync2eran@tromer.org wrote: > A year ago we discussed the strength of the MD4 hash used by rsync and > librsync, and one of the points mentioned was that only collision > attacks are known on MD4. Could you please forward this into the bug tracker so it's not lost? -- Martin -------------- next part -------------- A non-text attachment was scrubbed... Name: not...

Hi, while implementing the rsync protocol in one of our projects I found that the current CVS version still has a MD4 bug. I'm using the FreeBSD libmd implementation and I still had checksum mismatches with protocol version 27 for files whose size was a multiple of 64 - 4 ( - 4 due to checksum_seed). A patch for todays CVS version is attached. Someone should also review the clean_fname() function in utils.c....

Hi, From v3.0.0 onwards the hash function implemented by Rsync was changed from MD4 to MD5 (http://rsync.samba.org/ftp/rsync/src/rsync-3.0.0-NEWS). My understanding is that MD5 is a more secure, slower version of MD4 but I am not convinced that the added security of MD5 would alone have merited the change from MD4 (particularly since MD4 is ~30% faster than MD5). I wonder if I am...

...omainlogon happens ? thnx, peter This is what my sambalogs tells me (debuglevel 4): [2002/02/21 11:39:13, 4] smbd/password.c:smb_password_ok(448) smb_password_ok: Checking SMB password for user nobody [2002/02/21 11:39:13, 4] smbd/password.c:smb_password_ok(472) smb_password_ok: Checking NT MD4 password [2002/02/21 11:39:13, 4] smbd/password.c:smb_password_ok(477) smb_password_ok: NT MD4 password check failed [2002/02/21 11:39:13, 4] smbd/password.c:smb_password_ok(492) smb_password_ok: Checking LM password [2002/02/21 11:39:13, 4] smbd/password.c:smb_password_ok(497) smb_password_o...

...om value (e.g., use /dev/urandom if available). In batch mode, you can store the random value somewhere in the batch fileset. Note that, above, block hash collisions are very easy to find if you know checksum_seed. The rolling Fletcher checksum1 is trivially defeated. To defeat the k-bit truncated MD4 checksum2, just keep generate random blocks having the same checksum1 until you find two with the same checksum2; by the birthday paradox it will take about 2^(k/2) attempts, where usually k=16 or k=24 with J.W. Schultz's code. Another note is that Donovan Baarda's formula for the probabil...

Hi, Is there a bug with the NT MD4 password check?? With one password, I can't access the shares.. in the log it says: ntlm_password_check: NT MD4 password check failed for user jason But when I change the password to something else it works. What's goin on?? Jason. -- Jason Coo Computer Engineer, P.Eng. The Fluid Life...

Would the asm md4 implementation used by Shareaza (under the GNU GPL) be appropreate to use in order to accelerate rsync? http://shareaza.svn.sourceforge.net/viewvc/shareaza/trunk/shareaza/asm/MD4_asm.asm?view=log http://sourceforge.net/projects/shareaza/

...[2002/04/12 11:15:47, 4] lib/substitute.c:automount_server(160) Home server: sparky2 [2002/04/12 11:15:47, 4] smbd/password.c:smb_password_ok(467) smb_password_ok: Checking SMB password for user darren [2002/04/12 11:15:47, 4] smbd/password.c:smb_password_ok(491) smb_password_ok: Checking NT MD4 password [2002/04/12 11:15:47, 4] smbd/password.c:smb_password_ok(496) smb_password_ok: NT MD4 password check failed [2002/04/12 11:15:47, 4] smbd/password.c:smb_password_ok(510) smb_password_ok: Checking LM password [2002/04/12 11:15:47, 4] smbd/password.c:smb_password_ok(515) smb_password_o...

Hello, "NEWS for rsync 3.0.0" <http://rsync.samba.org/ftp/rsync/src/rsync-3.0.0-NEWS> says: "Protocol 30 now uses MD5 checksums instead of MD4." But the "rsync man page" <http://rsync.samba.org/ftp/rsync/rsync.html> does not mention MD5, but only talks about "MD4 checksum". I guess the man page is only a bit outdated? Or did I misunderstand something? Regards, David Depardoux

...ame username and password to access the same share, I get "incorrect password." Looking for the difference in Samba debug traces, I find it comes down to this: smb_password_ok: Checking SMB password for user bryanh smb_password_ok: challenge received smb_password_ok: Checking NT MD4 password smb_password_ok: NT MD4 password check failed on the failing system; same thing but the last word is "succeeded" on the working system. The only relevant difference I can think of between the systems is that the working system is Windows XP and the failing one is Windows 7....

I'm sorry for asking a question which has been asked so many times before, but I can't seem to find the answer... How do I get to access my home directory on a Linux server running Samba from a Windows XP client? I'm getting "NT MD4 password check failed" in the log file even though the Windows client is listed in hosts.equiv. More information below... I have a small home network consisting of a Linux (SuSE 10.0) server and two Windows XP clients. Since I can't get things working properly, I've added log level...

from MD4 to MD5 (http://rsync.samba.org/ftp/rsync/src/rsync-3.0.0-NEWS). My understanding is that MD5 is a more secure, slower version of MD4 but I am not convinced that the added security of MD5 would alone have merited the change from MD4 (particularly since MD4 is ~30% faster than MD5). I wonder if I...

...there are obsolete and more or less cracked or have serious weaknesses, but if the hash sums are combined (e.g. appended... *NOT* XOR'ed !) it would be near impossible to exploit the known weaknesses for reasonable small data. AFAIK the advantages would be: - Existing hardware acceleration for md4/md5/sha1 can be used - Even using something like md5+sha256 would mean additional protection against weaknesses in either of the hash sum methods - All algorithms can be executed in parallel (either different CPUs or different crypto engines) Note that the whole thing is not limited to two keys/me...

...> On 5 Apr 2004, Donovan Baarda <abo@minkirri.apana.org.au> wrote: > > > librsync needs a whole file checksum. Without it, it silently fails for > > case 1), 3), and 4). > > Yes, a whole-file checksum should be used with it. Presumably > something stronger than md4 like SHA-1. md4 is probably good enough for most applications. I know it's not as secure as others, but when you take into account the requirement that the signature match as well, compromising it becomes much more complicated. > I think the only question is whether this should be done int...

...ul bug report before wiping the disk. My versions are: - OS - CentOS 6.3 - Kernel - 3.7.1-2 from http://elrepo.org/tiki/kernel-ml - btrfs-progs - v0.20-rc1-37-g91d9eec. Built today from git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git The failure is: # ./btrfsck --repair /dev/md4 enabling repair mode checking extents leaf parent key incorrect 183603200 bad block 183603200 leaf parent key incorrect 183640064 bad block 183640064 warning, start mismatch 152387469312 762175488 block 152387469312 rec extent_item_refs 1, passed 1 warning, start mismatch 449606139904 427217858560...

Hi all! Im having a problem on my network when users try to logon. After trying to logon the follow error is generated on the log.user file. smb_password_ok: NT MD4 password check failed to correct this problem what I done was change the login password in smbpasswd for that user to the same password used on the station. (smbpasswd user ) But how to make any passwd change on the clients to automatic change the password on smbpasswd (Or some way that the net...

...supposed to work or the supported method is "connect network drive only"? Thanks ntlm_password_check: NTLMv2 password check failed check_ntlm_password: Authentication for user [myuser] -> [myuser] FAILED with error NT_STATUS_WRONG_PASSWORD ntlm_password_check: LM password, NT MD4 password in LM field and LMv2 failed for user myuser check_ntlm_password: Authentication for user [myuser] -> [myuser] FAILED with error NT_STATUS_WRONG_PASSWORD ntlm_password_check: NTLMv2 password check failed check_ntlm_password: Authentication for user [myuser] -> [myuser] FAILED...