Re: [WebDNA] Encode cookies ONLY via "method=Base64"
This WebDNA talk-list message is from 2008
It keeps the original formatting.
numero = 101260
interpreted = N
texte = Ken Try "hiding" the value inside a longer string and then use getchars to get the true value I resorted to this technique some time ago when I ended up with problems. Stuart On 27/10/2008, at 10:02 AM, Kenneth Grome wrote: >> sometimes a second decrypt and/or unurl >> is needed. > > A different number of decrypts and encrypts never works, you > must always use the same number of these contexts. A > different number of urls and unurls is definitely necessary > sometimes: > > >> Syntax reminder on variable (straight), and database >> encryption: >> Straight encryption: same amount of [url]'s going in as >> comming out >> Database encryption: one more [url] going in >> than comming out > > Right, thanks for the reminder. > > With the cookies I first tried the same number of urls and > unurls but it was failing, so then I tried using one more > url going in -- because I thought that *maybe* using > cookies is similar to using a database. But this theory > was wrong because an extra url with cookies does not fix > the problem like it does with a database. > > >> Could you please tell us what server you're using? > > My client's Windows server running WebDNA 6.? > > >> I have found the same thing as Ken has, and that it >> is on our list of potential bugs that we are addressing. >> The scope appears to be only in cookie and orderfile >> interaction so far. > > Orderfile too? > > Thanks Donovan, that's two scopes we should avoid when using > the standard WebDNA encryption. Too bad though, since I > want to use encrypted cookies for security reasons. > > > PROBABLE CONCLUSION: > > Although Base64 is an encoding method (not an encryption > method) it is the ONLY method that actually works when > trying to obfuscate cookie values. > > Base64 is certainly not secure like an encrypted value might > be, but it is better than nothing I guess. I tested all > methods using cookies with the following results: > > standard webdna encryption --> fails 1/4 of the time > method=CyberCash --> cannot be decrypted > method=APOP --> cannot be decrypted > method=Base64 --> 100% reliable in dozens of tests > > > Sincerely, > Ken Grome > --------------------------------------------------------- > This message is sent to you because you are subscribed to > the mailing list
. > To unsubscribe, E-mail to: > archives: http://mail.webdna.us/list/talk@webdna.us > old archives: http://dev.webdna.us/TalkListArchive/
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Ken Try "hiding" the value inside a longer string and then use getchars to get the true value I resorted to this technique some time ago when I ended up with problems. Stuart On 27/10/2008, at 10:02 AM, Kenneth Grome wrote: >> sometimes a second decrypt and/or unurl >> is needed. > > A different number of decrypts and encrypts never works, you > must always use the same number of these contexts. A > different number of urls and unurls is definitely necessary > sometimes: > > >> Syntax reminder on variable (straight), and database >> encryption: >> Straight encryption: same amount of [url]'s going in as >> comming out >> Database encryption: one more [url] going in >> than comming out > > Right, thanks for the reminder. > > With the cookies I first tried the same number of urls and > unurls but it was failing, so then I tried using one more > url going in -- because I thought that *maybe* using > cookies is similar to using a database. But this theory > was wrong because an extra url with cookies does not fix > the problem like it does with a database. > > >> Could you please tell us what server you're using? > > My client's Windows server running WebDNA 6.? > > >> I have found the same thing as Ken has, and that it >> is on our list of potential bugs that we are addressing. >> The scope appears to be only in cookie and orderfile >> interaction so far. > > Orderfile too? > > Thanks Donovan, that's two scopes we should avoid when using > the standard WebDNA encryption. Too bad though, since I > want to use encrypted cookies for security reasons. > > > PROBABLE CONCLUSION: > > Although Base64 is an encoding method (not an encryption > method) it is the ONLY method that actually works when > trying to obfuscate cookie values. > > Base64 is certainly not secure like an encrypted value might > be, but it is better than nothing I guess. I tested all > methods using cookies with the following results: > > standard webdna encryption --> fails 1/4 of the time > method=CyberCash --> cannot be decrypted > method=APOP --> cannot be decrypted > method=Base64 --> 100% reliable in dozens of tests > > > Sincerely, > Ken Grome > --------------------------------------------------------- > This message is sent to you because you are subscribed to > the mailing list . > To unsubscribe, E-mail to: > archives: http://mail.webdna.us/list/talk@webdna.us > old archives: http://dev.webdna.us/TalkListArchive/
Stuart Tremain
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