|Elliott Sound Products|
The order program includes the facility to allow you to download the latest price list direct from the ESP website. Simply make sure you are connected to the Internet, and click the "Download" button. Make sure that your price list version matches that shown above.
Note that the use (and transmission to my e-mail address) of the encrypted form represents your digital signature, and is a binding contract for sale of goods. Use of the form indicates that you (or the cardholder where the buyer and cardholder are different persons) are authorised to use the card details supplied, and will not dispute the charges unless ESP has made a mistake in the transaction. In the latter case, you must contact ESP first, and it is almost certain that the dispute can be resolved to everyone's satisfaction.
For example, the (dummy) record shown below shows the original text and the encrypted version (the upper case 'X' characters may be an upper case X or an unprintable character, outside the normal ASCII character range).
|Original Text||Encrypted Text|
1234 Drivel Drive
Sometown NSW 2445
4556 1234 1234 1234 - 11/07
Frederick B Bloggs
P3A x 1, P88 x 2
As you can see, there is no correlation between the two. A character will usually not be encrypted to the same character twice, may be encrypted to itself (i.e. no change - the lack of this ability made the Enigma machine from WWII easier to 'crack' than would otherwise have been the case), and the cipher text isn't even text - it contains 'unprintable characters' such as line feeds, carriage returns and control codes.
Two identical orders will produce identical encrypted files, but if just one character is changed anywhere within the order, the file will be different.
Is the code unbreakable? ... no. The most sophisticated encryption currently available can be broken given enough time and a good enough reason (the reason has to be good, as the cost is huge!). However, it remains far more secure than most alternatives.