Bugtraq mailing list archives
Re: MD5 To Be Considered Harmful Today
From: Pavel Machek <pavel () ucw cz>
Date: Wed, 8 Dec 2004 23:40:19 +0100
Hi!
:~/misc/md5$ cat msg1 I agree to sell you my horse ^Fita^, its saddle and harness for price 14000 dollars. Signed BaraExcept you can't do this, since the appended data needs to be identical between the two files. That's why I used the encrypted payload -- it ties the semantic meaning of the embedded commands to posession of vec1's series of bits, which is of course what a cipher is meant to do. Your payloads differ but the above line is incorrect. Your actual appended files: $ cat msg1 [terminal garbage]I agree to sell you my horse ^Fita^, its saddle and harness for price 1 000 dollars. Signed Bara $ cat msg2 [slightly different terminal garbage]I agree to sell you my horse ^Fita^, its saddle and harness for price 1 000 dollars. Signed Bara
Actually, no, it is not. Try catting it on linux console. It takes the garbage, overwrites it with ^Hs, then writes ... "its saddle and harness for price 1", then shifts cursor right (over 4 or `, depending on first block), then continues with "000 dollars". My trick does *not* work in Gnome Terminal (I've just verified it). You need actuall linux console, press ctrl-alt-F1 on most distros to get to one... but if you tell me what terminal you use, I can probably create terminal sequence that works there... Pavel -- People were complaining that M$ turns users into beta-testers... ...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
Current thread:
- Re: MD5 To Be Considered Harmful Someday, (continued)
- Re: MD5 To Be Considered Harmful Someday Adam Shostack (Dec 09)
- Re: MD5 To Be Considered Harmful Someday Solar Designer (Dec 08)
- Re: MD5 To Be Considered Harmful Someday Dan Kaminsky (Dec 08)
- Re: MD5 To Be Considered Harmful Someday Pavel Kankovsky (Dec 09)
- Re: MD5 To Be Considered Harmful Someday Solar Designer (Dec 13)
- Re: MD5 To Be Considered Harmful Someday George Georgalis (Dec 08)
- Re: MD5 To Be Considered Harmful Someday Dan Kaminsky (Dec 08)
- Re: MD5 To Be Considered Harmful Today Dan Kaminsky (Dec 08)
- Re: MD5 To Be Considered Harmful Today Pavel Machek (Dec 08)
- Re: MD5 To Be Considered Harmful Today Dan Kaminsky (Dec 08)
- Re: MD5 To Be Considered Harmful Someday Jack Lloyd (Dec 08)
- Re: MD5 To Be Considered Harmful Someday Jack Lloyd (Dec 08)