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The word Cryptography originated from the Greek Word "Secret writing. Cryp-tography is basically the science of securing data using algebraic relationships so that ordinary data can be altered into unintelligible text. Cryptography helps in storing confidential or sensitive information or transmitting it over the communi-cation network in such a way that only authorized can access or use it. The input data or information provided by the user is called as "Plaintext" while the altered or encrypted information is called as "Ciphertext". Ciphertexts are generated with the combination of plaintexts and keys while retrieving the information back to the original form is called decryption. About 3000 B.C, first time cryptography was used in Egypt, where pictograms were used on a stele. But in the 19th century discovery of Rosetta stone helped in revealing the information which was used on pictograms. Further, scytale cipher was originated where a parchment strip was wrapped around a cylinder where data is rearranged. But the information was re-vealed by wrapping the parchment strip. In the first century B.C, a new encryption
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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