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M
mtnhomes
Participating Frequently
February 22, 2016
Question

Encrypt Decrypt Problem

  • February 22, 2016
  • 3 replies
  • 747 views

I am suddenly getting an error in a script that has been working for years where I encrypt an html file so that is can't be accessed via a browser and then decrypt it for later reference

The encrypting scheme is very basic:

<cfset archivefile="<HTML><BODY>" & paynowbutton & invoiceheader & invoicebody & "</body></html>">

<cfset tempinvoice=encrypt(archivefile,session.key)><!---session.key is a 4 digit PIN number--->

<cffile    action = "write"  file = "#application.LocalRoot#\invoices\#brokerid#_invoice.html"  output = "#tempinvoice#">

THEN TO UNENCRYPT

<cffile action="read"    file = "#application.LocalRoot#\invoices\#form.brokerid2#_invoice.html"  variable="invoice">

<cfset invoice=decrypt(invoice,session.key)>

THEN THE ERROR WHICH HAS BEEN INCREASING IN FREQUENCY

An error occurred while trying to encrypt or decrypt your input string: The input and output encodings are not same


ANY IDEAS??

    This topic has been closed for replies.

    3 replies

    M
    mtnhomesAuthor
    Participating Frequently
    February 24, 2016

    I appreciate the suggestions, and adding charset on both ends of the transaction is a sound idea.

    What I ended up doing though is recreating the documents as PDF wherever the decrypting failed, and will use this process going forward.

    S
    Steve Sommers
    Legend
    February 23, 2016

    My vote for the most likely cause is what Carl said: encoding.

    A second more remote guess might be malware modifying your .html file with spam links, corrupting your encrypted data. I ran into this a couple years back with an account I had on a shared hosting provider. They had malware adding spam to html files.

      Carl Von Stetten
      Carl Von Stetten
      Legend
      February 22, 2016

      Did you upgrade to a newer ColdFusion version after some of the encrypted files were generated?

      M
      mtnhomesAuthor
      Participating Frequently
      February 22, 2016

      Negative. In fact the code above fails immediately. As soon as is encrypted and saved as a file I can not decrypt it. I can however decrypt the encrypted content while it is still a variable (before storing as a file)

      Carl Von Stetten
      Carl Von Stetten
      Legend
      February 23, 2016

      "Encodings" might be the important bit.  I'm not well-versed in the subject, but it might be reading and writing using different character sets.  Try adding the "charset" attribute to both CFFILE calls.

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