Key storage device, transaction method of key storage device, transaction system and transaction method
AssigneeIndustrial Technology Research Institute
InventorsYao-Hsin CHEN, Jui-Ting WU, Hsuan-Tung CHEN
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Abstract
A key storage device comprises a one-way receiving interface, a key calculation unit, and a one-way outputting interface. The key calculation unit includes a signature unit. The one-way receiving interface receives a transaction message of an external electronic device in a single direction. The signature unit encrypts the transaction message by a private key to generate a signature message. And, the one-way outputting interface transmits the signature message to the external electronic device in a single direction.
Claims29
A key storage device, comprising:
- a one-way receiving interface, configured to receive a transaction message of an external electronic device in a single direction;
- a key calculation unit, comprising:
- a signature unit, configured to encrypt the transaction message by a private key to generate a signature message;
- and
- a one-way outputting interface, configured to transmit the signature message to the external electronic device in a single direction.
A transaction method of key storage device, comprising:
- receiving a transaction message of an external electronic device in a single direction by a one-way receiving interface;
- encrypting the transaction message by a private key to generate a signature message by a signature unit;
- and
- transmitting the signature message to the external electronic device in a single direction by a one-way outputting interface.
A key storage device, comprising:
- a proxy unit, configured to perform a bidirectional transmission link to an external electronic device via a bidirectional transmission interface;
- a one-way receiving interface, configured to receive a transaction message of the external electronic device in a single direction;
- a key calculation unit, comprising:
- a signature unit, configured to encrypt the transaction message by a private key to generate a signature message;
- and
- a one-way outputting interface, configured to transmit the signature message to the proxy unit, and the proxy unit transmits the signature message to the external electronic device in a single direction.
A transaction system, comprising:
- an external electronic device, configured to transmit or display a transaction message;
- a key storage device, comprising:
- a proxy unit, configured to perform a bidirectional transmission link to the external electronic device via a bidirectional transmission interface;
- a one-way receiving interface, configured to receive the transaction message of the external electronic device in a single direction;
- a key calculation unit, comprising:
- a signature unit, configured to encrypt the transaction message by a private key to generate a signature message;
- and
- a one-way outputting interface, configured to transmit the signature message to the proxy unit, and the proxy unit transmits the signature message to the external electronic device in a single direction.
A transaction method, comprising:
- transmitting or display a transaction message by an external electronic device;
- performing a bidirectional transmission link to the external electronic device via a bidirectional transmission interface by a proxy unit;
- receiving the transaction message of the external electronic device in a single direction by a one-way receiving interface;
- encrypting the transaction message by a private key to generate a signature message by a signature unit;
- and
- transmitting the signature message to the proxy unit, and the proxy unit transmits the signature message to the external electronic device in a single direction by a one-way outputting interface.
Dependencies are inferred from the claim text.