I hope someone with a little knowledge of Encryption and AES stuff can help me out with how to use a provided key to decrypt some info.
Your time here would be greatly appreciated. Details below. On 10/15/07, Duncan <[EMAIL PROTECTED]> wrote: > Hi all, > > I have a token that is being passed in via the URL, that is generated > in a .NET program. I am having trouble decoding it in CF 8 so I was > hoping that someone could give me a hand. I am very frustrated with > this as this is my first dive into AES. > > The .NET developer gave me the following instructions: > > These are the steps needed to return the key in the email back to it's > original state > > 1. URLDecode the key > 2. Convert result to decoded base64 binary > 3. Remove chr(0) from end of string > 4. Decrypt from AES192 (requires a 24 character Key). Hence > make sure you pad the hash key with spaces at the end up to 24 > characters > > And here is what I have code wise now (I changed the key to keep it private): > > <cfoutput> > <!--- comes in via URL ---> > <cfset > forDec="OTg4MTc6NjcmOEpoXmRXRWY0JSVHWUcqb2xpa3VqZGxveHRvbkByZWQ1LmNvbS5hdQ%3D%3D"> > <!--- padded with spaces to make 24 chars ---> > <cfset key="7&KSK^8SID "> > <br />#forDec# > <!--- 1. URLDecode the key ---> > <cfset forDec = URLDecode(forDec)> > <br />#forDec# > <!--- 2. Convert result to decoded base64 binary ---> > <cfset forDec = BinaryDecode(forDec,"base64")> > <!--- we now have binary object ---> > <cfdump var="#forDec#"> > <!---3. Remove chr(0) from end of string ---> > <!--- I cant put a trim on to a binary object, nor can I do a > ReplacenoCase() ---> > > <!---4. Decrypt from AES192 (requires a 24 character Key). Hence > make sure you pad the hash key with spaces at the end up to 24 > characters---> > <cfset key = Decrypt(forDec,key,"AES","base64")> > </cfoutput> > > This results in a bytearray cannot be converted to strings error. So I > tried forDec.toString(), but every request this generates a different > value - how can this be? > > <cfset key = > Decrypt(BinaryEncode(forDec,"base64"),BinaryDecode(key,"base64"),"AES","base64")> > > Results in getting an error that " The input and output encodings are > not same." > > I am at a loss and tearing my hair out - can anyone help me out here??? > > -- > Duncan I Loxton > [EMAIL PROTECTED] > -- Duncan I Loxton [EMAIL PROTECTED] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Create robust enterprise, web RIAs. Upgrade to ColdFusion 8 and integrate with Adobe Flex http://www.adobe.com/products/coldfusion/flex2/?sdid=RVJP Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:291157 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
