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Arbitrated Quantum Digital Signature: Difference between revisions
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==Outline== | ==Outline== | ||
Like other QDS protocols, it is divided into two phases: Distribution and Messaging. This scheme is presented between the seller (one who signs the message), the buyer (one whom the signed message is sent) and PKG (generates and distributes public-private key for the seller) and a buyer</br> | Like other QDS protocols, it is divided into two phases: Distribution and Messaging. This scheme is presented between the seller (one who signs the message), the buyer (one whom the signed message is sent) and PKG (generates and distributes public-private key for the seller) and a buyer. </br> Distribution includes the generation of public and private keys as follows | ||
* '''Key Generation''': In this step, PKG generates the public key of the seller and generates a private key which is secretly sent to Seller over the insecure classical channel. | * '''Key Generation''': In this step, PKG generates the public key of the seller and generates a private key which is secretly sent to Seller over the insecure classical channel. | ||
**Seller's public key is derived from her personal information such as her email-id over a public channel. A one-way function is chosen by PKG randomly and secretly (known as the master key), which uses the classical public key as its input. | **Seller's public key is derived from her personal information such as her email-id over a public channel. A one-way function is chosen by PKG randomly and secretly (known as the master key), which uses the classical public key as its input. | ||