home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky sci.crypt:2722 comp.security.misc:784
- Newsgroups: sci.crypt,comp.security.misc
- Path: sparky!uunet!decwrl!deccrl!news.crl.dec.com!news!nntpd.lkg.dec.com!nntpd.lkg.dec.com!engholm
- From: engholm@nodule.lmo.dec.com (Larry Engholm)
- Subject: Re: choosing passwords (was: Re: Crypt should be based on MD5)
- In-Reply-To: freitag@tpki.toppoint.de's message of Sun, 19 Jul 1992 21:30:45 GMT
- Message-ID: <ENGHOLM.92Jul23012833@nodule.lmo.dec.com>
- Sender: usenet@nntpd.lkg.dec.com (USENET News System)
- Organization: Digital Equipment Corp, Marlboro, MA
- References: <1992Jul12.093017.20528@nntp.uoregon.edu>
- <NL3uNB2w165w@elrond.toppoint.de>
- <1992Jul19.213045.7286@tpki.toppoint.de>
- Date: Thu, 23 Jul 1992 06:28:33 GMT
- Lines: 13
-
- In article <1992Jul19.213045.7286@tpki.toppoint.de> freitag@tpki.toppoint.de (Claus Schoenleber) writes regarding the ISBN checksum:
-
- / 10 \
- / __ \
- c = 11 - ( \ a * i ) mod 11
- \ /_ i /
- \ i=2 /
-
- >If c = 10, then take letter 'X' instead.
-
- So what if the sum mod 11 is 0, and therefor c=11? Is 'Y' used?
-
- This algorithm implies that c can't be 0. (Maybe 0 is used for 11).
-