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US 9,882,721 B2Granted
Authentication using electronic signature
AssigneeSony Corporation
InventorsYohei Kawamoto, Yu Tanaka
Life of this patent
Estimating the term…
Abstract
An information processing system comprising interface circuitry configured to receive message-independent information, the message-independent information having been generated by another apparatus and transferred to the interface in advance of a digital signature being generated, send message-dependent information to an external device, and receive a digital signature from the external device; and processing circuitry configured to generate the message-dependent information from a message and at least a part of the message-independent information, and associate the digital signature with the message.
Claims24
An information processing system, comprising:
- interface circuitry configured to:
- receive message-dependent information from a first external device, based on reception of message-independent information by the first external device from a second external device;
- send the received message-dependent information to the second external device;
- and
- receive a digital signature from the second external device,
- wherein the digital signature is generated by the second external device based on reception of a first message by the second external device from a third external device, and
- wherein the first message is received by the second external device based on a request to receive the first message, that is transmitted from the second external device to the third external device,
- wherein the message-independent information is used in generation of the digital signature, and
- wherein the second external device is configured to delete the message-independent information based on the generation of the digital signature for a determined number of times, wherein the determined number of times is greater than one;
- and
- processing circuitry configured to:
- send a second message to the first external device based on a request to receive the second message, sent by the first external device,
- wherein the message-dependent information is generated by the first external device based on the received second message;
- and
- associate the received digital signature with the second message.
12 more elements
An information processing method, comprising:
- receiving message-dependent information from a first external device, based on reception of message-independent information by the first external device from a second external device;
- sending a first message to the first external device based on a request to receive the first message is sent by the first external device,
- wherein the message-dependent information is generated by the first external device based on the received first message;
- sending the received message-dependent information to the second external device;
- receiving a digital signature from the second external device,
- wherein the digital signature is generated by the second external device based on reception of a second message by the second external device from a third external device,
- wherein the second message is received by the second external device based on a request to receive the first message, that is transmitted from the second external device to the third external device,
- wherein the message-independent information is used in generation of the digital signature, and
- wherein the second external device is configured to delete the message-independent information, based on the generation of the digital signature for a determined number of times, wherein the determined number of times is greater than one;
- and
- associating the received digital signature with the first message.
8 more elements
A non-transitory computer-readable medium, having stored thereon, computer-executable instructions that when executed by a processing circuitry, cause the processing circuitry to execute operations, the operations comprising:
- receiving message-dependent information from a first external device, based on reception of message-independent information by the first external device from a second external device;
- sending a first message to the first external device based on a request to receive the first message is sent by the first external device,
- wherein the message-dependent information is generated by the first external device based on the received first message;
- sending the received message-dependent information to the second external device;
- receiving a digital signature from the second external device,
- wherein the digital signature is generated by the second external device based on reception of a second message by the second external device from a third external device;
- wherein the second message is received by the second external device based on a request to receive the second message, that is transmitted from the second external device to the third external device;
- wherein the message-independent information is used in generation of the digital signature, and
- wherein the second external device is configured to delete the message-independent information based on the generation of the digital signature for a determined number of times, wherein the determined number of times is greater than one;
- and
- associating the received digital signature with the first message.
8 more elements
An information processing apparatus, comprising:
- interface circuitry configured to:
- receive message-independent information, wherein the message-independent information is generated by a first external device and is transferred to the interface circuitry in advance of a digital signature being generated, and
- receive signature generation information generated by a second external device based on reception of a message by the second external device from a third external device,
- wherein the message is generated by the third external device,
- wherein the message is sent to the second external device based on a request to receive the message, that is transmitted from the second external device and received by the third external device, and
- wherein the signature generation information is generated by the second external device based on the received message;
- and
- processing circuitry configured to:
- generate the digital signature from the message-independent information and the received signature generation information;
- and
- delete the message-independent information based on the generation of the digital signature for a determined number of times, wherein the determined number of times is greater than one.
8 more elements
An information processing method, comprising:
- receiving message-independent information from a first external device, wherein the message-independent information is generated and transferred in advance of a digital signature being generated;
- receiving signature generation information generated by a second external device based on reception of a message by the second external device from a third external device,
- wherein the message is generated by the third external device,
- wherein the message is sent to the second external device based on a request to receive the message, that is transmitted from the second external device and received by the third external device, and
- wherein the signature generation information is generated by the second external device based on the received message;
- generating, with processing circuitry, the digital signature from the message-independent information and the received signature generation information;
- and
- deleting the message-independent information based on the generation of the digital signature for a determined number of times, wherein the determined number of times is greater than one.
5 more elements
A non-transitory computer-readable medium having stored thereon computer-executable instructions, that when executed by a processing circuitry, cause the processing circuitry to execute operations, the operations comprising:
- receiving message-independent information from a first external device, wherein the message-independent information is generated and transferred in advance of a digital signature being generated;
- receiving signature generation information generated by a second external device based on reception of a message by the second external device from a third external device,
- wherein the message is generated by the third external device,
- wherein the message is sent to the second external device based on a request to receive the message, that is transmitted from the second external device and received by the third external device, and
- wherein the signature generation information is generated by the second external device based on the received message;
- generating, with processing circuitry, the digital signature from the message-independent information and the received signature generation information;
- and
- deleting the message-independent information based on the generation of the digital signature for a determined number of times, wherein the determined number of times is greater than one.
5 more elements
Dependencies are inferred from the claim text.