Whoa. So weird I also tested here, and the encoded "johnmurray" was
decoded to "johnmurrax"! It's not with all 10 charcs. string, by the way.
I think this is a CF default algorithm (CFMX_COMPAT, which is compatible
do earlier versions of CF) implementation bug.
You should use a more secure and standard algorithm, like TripleDES.
Check out the Encrypt() documentation.
--
Fabio Terracini
Andy Mcshane wrote:
>Hi all, I am trying to store specific data into a database in an encrypted
>format. This data also has to be decrypted so as to be displayed and edited
>onscreen therefore ruling out using the hash function. The problem that I am
>having is on the decrypt.
>
>Example:
>
><cfset foo = encrypt("johnmurray", "wibble")>
>
>foo then equals "*5)V%5*.Z59RR$"
>
>I save this text to the database. An unusual thing happens when I try to
>decrypt this text as follows;
>
><cfset foo = decrypt("*5)V%5*.Z59RR$", "wibble")>
>
>foo then equals "johnmurrax"
>
>as you can see the 'y' has become an 'x'.
>
>Now here is the strange thing,
>
><cfset foo = encrypt("johnmurray ", "wibble")> - with an extra space at the
>end of johnmurray everything encrypts/decrypts correctly using an 11 character
>string.
>
>also
>
><cfset foo = encrypt("johnmurra", "wibble")> - if I make it only 9 characters
>then this also encrypts/decrypts correctly.
>
>It seems to only happen with 10 letter strings?
>
>This is on Coldfusion 7, using a SQL database. I have tried URLEncodedFormat
>before saving to the database and then using URLDecode after retrieveing. As
>this text is defined by the user then I cannot simply say that there can be no
>10 character strings so has anyone ever come across this?
>
>Does anyone have any better encryption ideas I could use? This is a really
>annoying little quirk as to why it only seems to affect 10 character strings,
>weird huh?
>
>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|
Logware (www.logware.us): a new and convenient web-based time tracking
application. Start tracking and documenting hours spent on a project or with a
client with Logware today. Try it for free with a 15 day trial account.
http://www.houseoffusion.com/banners/view.cfm?bannerid=67
Message: http://www.houseoffusion.com/lists.cfm/link=i:4:219234
Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4
Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4
Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
