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 MinorDirector of Internet Services------------------------------------------------------------Cybermill Communicationshttp://www.cybermill.com http://www.merchantmaker.comProviding Ecommerce and interactive website development andhosting 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/
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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 MinorDirector of Internet Services------------------------------------------------------------Cybermill Communicationshttp://www.cybermill.com http://www.merchantmaker.comProviding Ecommerce and interactive website development andhosting 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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