Understanding cryptography even solutions pdf

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The seller can easily claim they have not received the money even though they have, and the buyer can equally argue that they have paid the money even if they haven’t. Individually, both the buyer and the seller can record the monetary transactions, but neither source can be trusted. Once the money is exchanged, ownership of the property is transferred to the buyer. For instance, consider the sale of a property. Traditional database technologies present several challenges for recording financial transactions.

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