passwd problima

[George Chlapoutakis]

DarkSYN wrote:
Greetings. Gia na kseka8arisoume mia small detail. To kserw gia tous 8
"simantikous" xarakthres, den xreiazotane na to peksoune kapoioi eirwnes
gia na to ma8w. Apo ekei kai pera, auto pou mou prokalese periergeia
itane to oti paroti elege mexri 8 to 8ewrisa oti itane gia kapoia user
friendliness, gia na min ksexnaei kapoios to pass tou. Den iksera oti
ousiastika den pairnei panw apo 8 grammata, dioti exw syni8isei na min
polypistevw to ti mou proteinetai, ws xrisths twn Windows. Auto pou
skeftika einai oti isws an kapoios valei pass megalo kai nomizei oti
einai poio secure apo ena mikro na anakalypsei kapoia stigmh pws
ousiastika eite 8 eite N (N Avocadro) characters valei den 8a kerdisei
tipota.
By the way, prin synexisete na apantate me ton xarakthrismo oti 8
letters einai arketa gia poly megalo security, kante kai ligo ton kopo
na koitaksete sto Practical Unix & Internet Security tou Garfinkel kai
Spafford ekei pou leei gia passwords. Apo oti 8ymamai, leei pws to
current systhma gia passwords pou yparxei 8elei poly poly ligo xrono gia
na spastei apo ena password cracker, dedomenhs ths texnologikhs proodou
pou yparxei auth th stigmh. Opote, boom goes the theory oti ta pass me 8
xaraktires einai safe!!!!!!!!
However, 8a i8ela na euxaristhsw ta atoma pou den me eirwneutikan kai
apantisan me kapoies plhrofories. Autoi kseroun (pou leei kai h gnwsth
diafimhsh gia aporrypantiko rouxwn)!!!
Filika
Giwrgos Xlapoutakis

Mavroyanopoulos Nikos wrote:
> 
> On Sun, May 30, 1999 at 02:58:14AM +0300, Giorgos Keramidas wrote:
> 
> > On Sat, May 29, 1999 at 11:44:10PM +0300, George Chlapoutakis wrote:
> > | DarkSYN wrote:
> > | You speak truly, agaphte Kwsth. In deed, pareleipsa na elegksw auto to
> > | 8ema...!!! My humble apologies!
> > | Whatever the case, ti peirazw gia na mporw na vazw megala password kai
> > | ti glitches yparxoune ws antalagma?
> > | Filika
> > | Giwrgos Xlapoutakis
> >
> > Koitakse... av to password sou exei mnkos 8 xaraktnrwv, kai
> > xrnsimopoieis se auto opoiodnpote suvduasmo xaraktnrwv apo to suvolo:
> >     [a-zA-Z0-9!@#$%^&*()-=+|.]
> > Tote oi suvduasmoi pou uparxouv eivai: 8 ^ 77 , to opoio (va eivai kala
> > o xrusos av0rwpos pou eftakse to bc(1) tns gnu) eivai iso me:
> >     3450873173395281893717377931138512726225554486085193277581262111899648
> 
> Kai omws den einai tosoi polloi oi syndyasmoi. To crypt(3) xrhsimopoiei
> ton DES pou exei megisto kleidi 56 bit. Ara oi synolikoi syndyasmoi einai
> 2^56==72057594037927936
> Para ma para poly mikrotero apo to proigoumeno.
> 
> > Dev exw balei kommata, teleies, n alles tetoies andioules, afou to
> > voumero apo movo tou milaei.  Etsi omws gia va psarwsouv ki allo osoi
> > dev exouv twra koitaksei eme mia mikrn dosn aporias to monitor (exei
> > ovtws tosa psnfia auto to pragma?) estw oti dokimazeis 1,000,000
> > suvduasmous to deuterolepto se 65536 omades apo 1000 PC n ka0emia
> > (0umizei kati se distributed.net auto se kavevav?), tote 0eleis tosa
> > deuterolepta
> >     52656145834278593348959013841835216159447547700274555627
> Estw oti dokimazeis me ta idia mesa ston parapanw arithmo
> thes 1099sec==18min
> Se 18 lepta katharises:)
> 
> Apo to biblio "Cryptography and network security" tou Stallings:
> 
> Key search Machine unit cost | Expected Search Time
> $100.000                     |  35 hours
> $1.000.000                   |  3.5 hours
> $10.000.000                  |  21 minutes
> 
> > Akoma ki etsi omws, me passwords pou kavouv expire se 3-6 mnves pisteuw
> > oti 0a eprepe va ais0avesai mia sxetikn asfaleia, swsta ;
> md5 encoding kai tipota ligotero:)
> 
> > Ki alla polla...
> > --
> >      ?     | Giorgos E. Keramidas, <mailto:keramida at ceid.upatras.gr>
> >   >(o.o)<  | http://students.ceid.upatras.gr/~keramida/index.html
> >      O     | If I had the time, I would write a smaller letter. -Pascal
> 
> --
> Nikos Mavroyanopoulos
> mailto:nmav at hellug.gr
> --
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--
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Gia boithia (h na diagrafhte) e-mail sto majordomo at hellug.gr
Ta archives tis listas einai sto http://lists.hellug.gr/archives
prin steilete kapoia erothsh psakte mipos exei hdh apanththei.
Gia opoiodipote problima stilte e-mail ston owner-linux-greek-users at hellug.gr
====================================================================