Method for generation, delivery, and validation of electronic coupons through personal tv service system

摘要: A process for coupon generation, delivery, and validation over a personal TV service system is disclosed. client issues electronic coupons to customers via center which generates authentication number each receiver. The known the key server database. It also receiver in encrypted form. product serial acts as public key, both customer center. unique offer ID assigned coupon. When receives coupon, it performs hash operation on using takes first or last N digits of hashed result number. may redeem by submitting number, Before redeemed, must be validated. look up unencrypted stored database same compare this with submitted customer. If these two numbers match,