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- Path: sparky!uunet!noc.near.net!transfer.stratus.com!ellisun.sw.stratus.com!cme
- From: cme@ellisun.sw.stratus.com (Carl Ellison)
- Newsgroups: sci.crypt
- Subject: Key Length (was Re: Limits on the Use of Cryptography?)
- Date: 5 Jan 1993 23:11:23 GMT
- Organization: Stratus Computer, Software Engineering
- Lines: 16
- Message-ID: <1id4irINNs2n@transfer.stratus.com>
- References: <726201680.AA00090@ship.wimsey.bc.ca>
- NNTP-Posting-Host: ellisun.sw.stratus.com
-
- In article <726201680.AA00090@ship.wimsey.bc.ca> Stu@f729.n153.z1.ship.wimsey.bc.ca (Stu) writes:
- >Assuming an 8 letter password, and say about 70 choices for each letter ( 26
- >uppercase, 26 lowercase - yes it's case sensitive - 10 for numbers + some
- >punctuation etc ) hmm... 70^8 is... 5.765*10^14. So the spooks that are
- >tailing you would have to try that many passwords.
-
- This calculation has a problem. It assumes that each 8-letter password
- is equally likely...so that a person would use "1pJ1NpxM" as readily as
- "BillyJoe". The only way I know to do that is to have a program assign
- passwords and allow no choice by the user.
-
- --
- -- <<Disclaimer: All opinions expressed are my own, of course.>>
- -- Carl Ellison cme@sw.stratus.com
- -- Stratus Computer Inc. M3-2-BKW TEL: (508)460-2783
- -- 55 Fairbanks Boulevard ; Marlborough MA 01752-1298 FAX: (508)624-7488
-