The problem w/ the mix chains is being sparesly discussed on the remailer-operator list (see enclosed email below). No ETR as of 2001/03/06 for down chain: http://www.publius.net/mixmaster-list.html -- gomes@navigo.com Carlos Macedo Gomes _sic itur ad astra_ 1; ----- Original Message ----- From: "Computer Cryptology" <turing@eskimo.com> To: "cmeclax po'u le cmevi'u ke'umri" <cmeclax@ixazon.dynip.com> Cc: "Remailer Operators Mailing List" <remailer-operators@anon.lcs.mit.edu> Sent: Tuesday, March 06, 2001 7:11 PM Subject: Re: Garbled passthru mix key
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On Tue, 6 Mar 2001, cmeclax po'u le cmevi'u ke'umri wrote:
de'i Tue, 06 Mar 2001 la cmeclax po'u le cmevi'u ke'umri cusku di'e
Turing and I have been doing some tests and have found that when passthru sends his key through lucifuge, austria, and perhaps cyggy or randseed, the key is Randseed is the culprit, though cyggy should be aware that his key may suffer the same fate.
To summarize, the key from passthru2 passes without problem through afpress, dizum, farout, frog2, green, gretchen, lefarris, lsd, shinn, steeleye, winter, and xganon. It has the middle missing when it passes through austria, lucifuge, and randseed.
I'm attaching at the bottom the key as lucifuge delivers it. The "[...]" is *not* my edit, but the problem.
In June (on or around the 25th) of last year Peter posted this problem to APAS. At the time, though, dizum was modifying keys. Someone then posted a code change for Mix, that exempted Mixmaster keys from the binary detection the same way that PGP keys are exempt. Does someone still have that code change? Can austria, lucifuge, and randseed be patched, or should we warn middle remailers? Those that don't send directly might want to avoid chaining Mix keys through these remailers otherwise.
-----BEGIN PGP SIGNATURE----- Version: PGPfreeware 6.5.8 for non-commercial use <http://www.pgp.com>
iQEVAwUBOqV8VDzxF7DEd0ehAQHujQgAmBSzThaV66SB3/1z6wT0WUQezXiy/epq FhamGnIvlXg+IIaU3uV9KkkOxU4QxEdsoZicso5OOPZYYgqt3Lh377p4ztbDKYw1 5laLpZucbbKRyaqQ4NsEfopJx1f4aKhH0XtVgBRbENAD6+VuvjyQ5D1YTeTzQ4Iy YJJkjapIHbBZT+jztyCTKAj/BMObvrhri/mUc7BJXOFFrUhpgqzMwfjP5sDCBOpF cuXc/nI3DZegG5labuUj6sckyEZR+d/Y84SR9Rxw842on32jmcDka4ryFSGvJ/Tm jfh4kuJHY1IEfEBMtrZmw5WDp9kp8x+BmV10OXH9Ctsk5wkbZ8/1eA== =Zzj9 -----END PGP SIGNATURE----- -- Computer Cryptology RSA Fingerprint = 2476BB9C15F3612778C53A87F915CA1D
From nobody@harrisherd.com Tue Mar 6 15:57:50 2001 Date: Tue, 6 Mar 2001 02:18:58 -0500 From: Anonymous <nobody@harrisherd.com> To: turing+passthru2=remailer-key=983854611@eskimo.com Subject: Mixmaster key for Passthru's 2nd incarnation
Here is the public key for Passthru's 2nd incarnation:
=-=-=-=-=-=-=-=-=-=-=-= passthru2 mixer@immd1.informatik.uni-erlangen.de c07b204924a69939651ec445fd5b2404 2.0.4b40 MC
-----Begin Mix Key----- c07b204924a69939651ec445fd5b2404 258 AATAD7wE2XqELmZ7SHVtuPQjDOjVjhIrXpL5j5Gs 7xEi6GXvCOS4vWyzmmZiTQjIimpBv4+PeyAAk6bm pBRHqSyXzf4SkZAzqxpqOmBn9nTC8ML3wmFuMsZU [...] AAAAAAAAAAAAAAAAAAAAAQAB -----End Mix Key-----