Re: Scientific Notation Problem

This WebDNA talk-list message is from

2001


It keeps the original formatting.
numero = 39248
interpreted = N
texte = On 10/10/01 5:36 PM, Richard Kirsner wrote:> I am trying to protect credit card n=umbers that are stored in a > WebMerchant Orders database. We process cards manually and only use > WebMerchant to display and manage the orders. On the store site, I put > the credit card number into one of the cart headers. Since I can't seem > to encrypt and decrypt the card number, I figured I could perform some > sort of mathmatical operation on the card number when setting it into a > header and do the reverse when displaying the card number in > WebMerchant. At least, if someone snags the orders database off my > server, the card number won't be usable. Not a perfect solution, but > the best I can do now. > > The problem is that when I perform some [math] on the card number, the > result is in scientific notation and the card number doesn't survive the > reverse math that I perform in WebMerchant to view it. [encrypt seed=myseed][accountnum][/encrypt] Robert Minor Director of Internet Services ------------------------------------------------------------ Cybermill Communications http://www.cybermill.com http://www.merchantmaker.comProviding Ecommerce and interactive website development and hosting services on Macintosh, Windows NT, Unix, and AS/400.All your websites are belong to us! ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://search.smithmicro.com/ Associated Messages, from the most recent to the oldest:

    
  1. Re: Scientific Notation Problem (John Peacock 2001)
  2. Re: Scientific Notation Problem (Bob Minor 2001)
  3. Scientific Notation Problem (Richard Kirsner 2001)
On 10/10/01 5:36 PM, Richard Kirsner wrote:> I am trying to protect credit card n=umbers that are stored in a > WebMerchant Orders database. We process cards manually and only use > WebMerchant to display and manage the orders. On the store site, I put > the credit card number into one of the cart headers. Since I can't seem > to encrypt and decrypt the card number, I figured I could perform some > sort of mathmatical operation on the card number when setting it into a > header and do the reverse when displaying the card number in > WebMerchant. At least, if someone snags the orders database off my > server, the card number won't be usable. Not a perfect solution, but > the best I can do now. > > The problem is that when I perform some [math] on the card number, the > result is in scientific notation and the card number doesn't survive the > reverse math that I perform in WebMerchant to view it. [encrypt seed=myseed][accountnum][/encrypt] Robert Minor Director of Internet Services ------------------------------------------------------------ Cybermill Communications http://www.cybermill.com http://www.merchantmaker.comProviding Ecommerce and interactive website development and hosting services on Macintosh, Windows NT, Unix, and AS/400.All your websites are belong to us! ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://search.smithmicro.com/ Bob Minor

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